Answer:
27
Step-by-step explanation:
Subtracting a negative is like adding
21 - -6
21 +6
27
Which of the following is a key property of the quadratic parent function?
OA. It is in quadrants III and IV.
OB. Its vertex is at the origin.
C. It is not a parabola.
OD. It is not a function.
The correct property of the quadratic parent function is given by:
B. Its vertex is at the origin.
What is the quadratic parent function?The quadratic parent function is modeled by:
y = x².
It has the vertex at the origin and increases to the left and to the right, into quadrants I and II, forming a function that is graphed by a parabola.
Hence the correct option regarding a property of the quadratic parent function is given by:
B. Its vertex is at the origin.
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When a shape is dilated, the _________ of the lengths in the image to the corresponding lengths in the pre-image are equal to the scale factor.
A. ratios
B. lengths
C. scale factors
D. proportions
find volume of cone please
The volume of the given cone is V= 10512.72 cm^3.
What is volume of cone ?The formula for the volume of a cone is ⅓ r2h cubic units, where r is the radius of the circular base and h is the height of the cone.
here, we have,
Volume = ⅓ r²h
given that,
r=18
h=31
i.e. V= 10512.72 cm^3
Hence, The volume of the given cone is V= 10512.72 cm^3.
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Tomorrow is felix's family reunion, so felix and his dad are making their famous chocolate beet cake. at the grocery store, felix puts some beets on the scale. the recipe calls for only 1 1 2 pounds of beets, so felix removes 3 4 of a pound of beets from the scale. now he has exactly what he needs for the cake. use an equation to find the weight of the beets that felix first puts on the scale.
The weight of the beets that Felix first puts on the scale is \(2\frac{1}{4}\) pounds using the concept of equations.
What is an equation?
A mathematical statement known as an equation shows the equality of two mathematical expressions.
Mathematical algebraic equations typically have one or more variables.
Given that the recipe calls for only \(1\frac{1}{2}\) pounds of beets i.e.
Pounds of beets required = \(1\frac{1}{2}\)
Pounds of beets removed by Felix = 3/4
To find the weight of the beets that Felix first puts on the scale.
Let Felix put x pounds of beets first.
Then, according to the given conditions we can write the equation
x - 3/4 = \(1\frac{1}{2}\)
⇒x - 3/4 = 3/2
⇒x = 3/2 + 3/4
⇒x = 9/4
⇒x = \(2\frac{1}{4}\)
Therefore, the weight of the beets that Felix first puts on the scale is \(2\frac{1}{4}\) pounds.
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sec2 x - tan2xHere is the proof of= sec X -tan x.sec x + tan xWhat is the missing line?1.O(sec x - tan x)(sec x - tan x)sec x + tan xO(sec x + tan x)(sec x + tan x)sec x + tan x(sec x - tan x)(sec x + tan x)sec x + tan xO(sec x - tan x)(sec x + tan x)sec X -tan x
Given:
\(\frac{\sec ^2x-\tan ^2x}{\sec x+\tan x}\)Sol:
\(\frac{\sec ^2x-\tan ^2x}{\sec x+\tan x}\)Use the formula:
\((a+b)(a-b)=a^2-b^2\)Then:
\(\begin{gathered} =\frac{\sec ^2x-\tan ^2x}{\sec x+\tan x} \\ =\frac{(\sec x-\tan x)(\sec x+\tan x)}{\sec x+\tan x} \\ =\sec x-\tan x \end{gathered}\)So missing line is:
\(=\frac{(\sec x-\tan x)(\sec x+\tan x)}{\sec x+\tan x}\)A square pyramid rests on top of a rectangle prism with a square base such that the base of the pyramid is the exact same size and shape as the top of the prism. what shape is the face where the pyramid and prism connect?
a. triangle
b. rectangle
c. square
e. trapezoid
The shape of the face where the square pyramid and the rectangular prism connect is a square (option c). This is because the base of the pyramid is the exact same size and shape as the top of the prism, which is also a square.
The shape of the face where the square pyramid and the rectangular prism connect is a square. Since the base of the pyramid is the exact same size and shape as the top of the prism, it means that both the pyramid and the prism have a square as their common base. When these two shapes are placed together, the corresponding faces that match up are also squares.
In a square pyramid, all the lateral faces are triangles, while the base is a square. On the other hand, a rectangular prism has rectangular faces on the sides and squares as the top and bottom faces.
When the two shapes are combined, the triangular lateral faces of the pyramid are connected to the rectangular faces of the prism, but the common face where they meet is the square base of both shapes. Therefore, the face where the pyramid and prism connect is a square. Hence, the correct answer is c. square.
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Gas prices averaged $4.33 per gallon in january and $3.89 per gallon in february. what was the percent decrease of the average gas price from january to february? 8.98% 10.16% 11.31% 44%
The percent decrease is 10.16%
How to calculate the percent decrease ?Percent decrease can be calculated by dividing the decrease by the original value and multiplying by 100
The first step is to calculate the decrease
= 4.33 - 3.89
= 0.44
The percent decrease can be calculated as follows
= 0.44/4.33 × 100
= 0.1016 × 100
= 10.16
Hence the percent decrease is 10.16 %
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Answer:
(B) 10.16%
Step-by-step explanation:
Correct on my quiz.
1 5/6 x 2 1/4 =
ANSWER ASAPPP . BE RIGHT AND EXPLAIN PLS
Answer:
25
Step-by-step explanation:
Answer:
\(4\ \frac{1}{8}\) \(or\) \(4.125\)
Step-by-step explanation:
\(--------------------------------------------\)
\(1\ \frac{5}{6}\) = \(1.83333333333\)
\(2\ \frac{1}{4}\) = \(2.25\)
\(1.83333333333\cdot2.25\) = \(4.12499999999\) = \(Rounds\) \(to\) \(4.125\) = \(4\ \frac{1}{8}\)
\(--------------------------------------------\)
\(1\ \frac{5}{6}\cdot2\ \frac{1}{4}\) = \(\frac{33}{8}\) = \(4.125\) = \(4\ \frac{1}{8}\) \(--------------------------------------------\)
Hope this helps! <3
\(--------------------------------------------\)
PLEASE HELP ME!!!!
Given that f(x)=x+2 and g(x)=3x^2-1. What is (fg)(x)?
Answer: ???
PLEASE EXPLAIN YOUR REASONING!!
Done!
At a sale, suits were sold for $116 each. This price was 58% of a suit's original price. How much did a suit originally cost?
The magnitude of an earthquake is measured on the Richter scale as a logarithm of the intensity of the shock wave. For magnitude Rand intensity, the formula is R = log/. Using this formulo, determine how many times more intense an earthquake that measures 7.5on the Richter scale is than an earthquake which measures 2.3 on the Richter scale. Round your answer to two decimal places,
To answer this question, first, we will compute the intensity of each earthquake.
Recall that:
\(a=\log b\text{ if and only if }10^a=b.\)Therefore, using the given formula we get:
\(I=10^R.\)Then, the intensity of an earthquake that measures 7.5 on the Richter scale is:
\(I_{7.5}=10^{7.5},\)and the intensity of an earthquake which measures 2.3 on the Richter scale is:
\(I_{2.3}=10^{2.3}.\)Now, notice that:
\(\frac{I_{7.5}}{I_{2.3}}=\frac{10^{7.5}}{10^{2.3}}=10^{5.2}.\)We know that:
\(10^{5.2}\approx158489.32.\)Answer:
\(158489.32\text{ times more intense.}\)What is the fraction 9/5 x + 23 greater than or equal to -50 (negative 50)
Answer:
x \(\geq\) -40.6
Step-by-step explanation:
9/5x + 23 \(\geq\) -50 (subtract 23 over to other side)
9/5x \(\geq\) -73 (multiply by 5)
9x \(\geq\) -365 (divide by 9)
x \(\geq\) -40.6
Through urban gardening, we can eventually achieve economic sufficiency and food security aside from ensuring a daily organic source of our food. Can a square urban garden with a length of (2x2 - 7) meters exactly fit in a rooftop with an area represented by the expression (4x4 - 14x2+ 49) square meters without wasted spaces? Justify your answer.
Hi i need the answer rn no trolling please
i will give u brainly if u answer it correctly
Using the area of a square and the square of the subtraction, it is found that the square urban garden can fit exactly into the rooftop without wasted spaces.
What is the area of a square?The area of a square of side length s is given by the square of s as follows:
A = s².
What is the square of the subtraction notable product?The square of the subtraction notable product is given as follows:
(a - b)² = a² - 2ab + b².
For this problem, the garden has side length given by:
s = 2x² - 7.
Hence the area of the square garden will be given as follows:
A = (2x² - 7) = 4x^4 - 28x² + 49.
This area of the square is less than the area of the rooftop, as x > 0, hence the square urban garden can fit exactly into the rooftop without wasted spaces.
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What did you call the intersection of the endpoints of two rays
The intersection of the endpoints of two rays is called a vertex. It is the common endpoint where two rays meet or come together to form an angle.
The intersection of the endpoints of two rays is called a vertex. A vertex is a point where two rays meet or come together. It is the common endpoint of two rays that form an angle. The vertex is the starting point for measuring the angle. In geometry, angles are formed by two rays that share a common endpoint, or vertex. The rays that form an angle are called the sides of the angle.
The other endpoints of the rays, which are not the vertex, are called the initial point and terminal point. The vertex is crucial in defining and measuring angles. It is represented by a dot or a small point on a geometric figure. When discussing angles or working with geometric figures, the vertex helps to identify the starting point and the position of the angle.
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Which of the following expressions is equivalent to b x b? A. 2b B.) b^2 C.)2^b D.)2b^2
Answer:
B
Step-by-step explanation:
because b x b is equals to b raised to the power of 2
The expression that is equivalent to b x b will be b².
For this question to be solved, you simply have to multiply the values given. In this case, you're multiplying the same value twice and this will simply be raised to the power of 2.
Therefore, based on the question asked, b × b will be:
= b × b
= b²
Therefore, the value of b × b is b².
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The Walnut Cove Ruritan Club sells hot dogs and drinks from a concession stand at the annual 4th of July parade. Carl bought 4 hot dogs and 6 drinks and paid $23.80. Susan purchased 4 hot dogs and 2 drinks and was charged $15.40. What is the cost of 1 hot dog and what is the cost of 1 drink?
Let, cost of 1 hot dog and 1 drink is x and y respectively.
Carl bought 4 hot dogs and 6 drinks and paid $23.80.
4x + 6y = 23.80 ....1)
Susan purchased 4 hot dogs and 2 drinks and was charged $15.40.
4x + 2y = 15.40 ....2)
Subtracting equation 2 by 1, we get :
(4x + 6y) - (4x + 2y) = 23.80 - 15.40
4y = 8.4
y = $2.1
4x + 6×2.1 = 23.80
4x = 23.80 - 12.2
4x = 11.6
x = 2.9
Therefore, the cost of 1 hot dog and what is the cost of 1 drink is $2.9 and $2.1 respectively.
Hence, this is the required solution.
the length of a rectangle is 2cm longer than its width. If the perimeter of the rectangle is 60 cm, find its length and width
Answer:
Let the Width(W) = X cm
then the length(L)= (2+X)cm
Perimeter(P)= 60cm
P =L+W
L+W =P
(2+X)cm +X cm = 60 cm
2X+2=60
2X=60-2
2X=58
dividing both sides by 2
X=29cm
Width =X
Width =29cm
the width is 29cm
Length= (2+X)cm
= (2+29)cm
= 31cm
the length is 31cm
We will let w represent the width of the rectangle (in centimeters).
We know that the length is 2 cm longer than the width.
So the length is w + 2 .
We can label the rectangle as follows.
The perimeter is given as 60 cm.
So we solve for w as follows.
w + (w + 2) + w + (w + 2) = 60
w + w + 2 + w + w + 2 = 60
4w + 4 = 60
4w = 56
w = 14
Using this value of w, we can find w + 2.
w + 2 = 14 + 2 = 16
ANSWER
length: 16 cm
width: 14 cm
(This question may have more than one solution.) Let C be a fixed n × n matrix. Determine whether the following are linear
operators on R^X":
(a) L(A) = 1 - 1
(6) L(A) = 1 + 17
(c) L(1) = C1 + AC
(d) L(1) = C°1
(c) L(1) = 1?C
Functions (c) L(1) = C1 + AC and (d) L(1) = C°1 are linear operators on R^n, while functions (a), (b), and (e) do not satisfy the properties of linearity and therefore are not linear operators.
a) L(A) = 1 - 1: This function is not a linear operator because it does not preserve scalar multiplication. Multiplying A by a scalar c would yield L(cA) = c - c, which is not equal to cL(A) = c(1 - 1) = 0.
b) L(A) = 1 + 17: Similar to the previous case, this function is not linear since it fails to preserve scalar multiplication. Multiplying A by a scalar c would result in L(cA) = c + 17, which is not equal to cL(A) = c(1 + 17) = c + 17c.
c) L(1) = C1 + AC: This function is a linear operator since it satisfies both the preservation of addition and scalar multiplication properties. Adding matrices A and B and multiplying the result by scalar c will yield L(A + B) = C(1) + AC + C(1) + BC = L(A) + L(B), and L(cA) = C(1) + cAC = cL(A).
d) L(1) = C°1: This function is a linear operator since it satisfies the properties of linearity. Addition and scalar multiplication are preserved, and L(cA) = C(0)1 = c(C(0)1) = cL(A).
e) L(1) = 1?C: This function is not a linear operator as it does not preserve scalar multiplication. Multiplying A by a scalar c would give L(cA) = 1?(cC), which is not equal to cL(A) = c(1?C).
In summary, functions (c) L(1) = C1 + AC and (d) L(1) = C°1 are linear operators on R^n, while functions (a), (b), and (e) do not satisfy the properties of linearity and therefore are not linear operators.
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at 3 am the temperature was 43. at 7:30 pm it's 56. explain mathematically how you know the temperature is 48 at least once during the day
The temperature was 48° at least once throughout the day as the temperature rises from 43° to 56° and 43° < 48° < 56° .
The temperature was 43° at 3 PM and it rises to 56° at 7.30 PM.
So we know that the rise of temperature in linear , hence the temperature will follow the rule of real numbers. Hence the temperature will increase through all the possible numbers between 43 and 56
Again 43° < 48° < 56° , so at least once the temperature will be 48 ° .
You can think about integers as either independent objects or as a tool for problem-solving. The study of analytical objects (such as the Riemann zeta function) that somehow encode features of integers, primes, or any other number-theoretic objects is often the best method for understanding number theory issues (analytic number theory).
Most people refer to number theory as arithmetic. By the turn of the 20th century, "numerical theory" had taken its place. (The term "arithmetic" is usually used to refer to "elementary computations," but it has come to signify more concepts in mathematical logic and computer technology, such as floating-point arithmetic.)
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This is really confusing can anyone help
In this case, the coordinates of A', B' and C' are :
A' = (-2, -6)
B' = (-14, -2)
C' = (-2, -2)
How did we arrive at the above?We know the original coordinates to be:
A = (1, 3)
B = (7, 1)
C = (1, 1)
Multiple by the scale factor to get :
A = (1, 3) x -2 = A' = (-2, -6)
B = (7, 1) x -2 = B' = (-14, -2)
C = (1, 1) x -2 ⇒ C' = (-2, -2)
See the new (dilated shape) attached.
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Simplify the expression. sin^2 Ø/ csc Øtan^2 Ø
Answer: OPTION (B): sin θ cos^2 θ
Therefore, The simplified expression is OPTION (B): sin θ cos^2 θ,
Which corresponds to:
sin^2 θ / csc θtan^2 θ is OPTION (B): sin θ cos^2 θ,
Step-by-step explanation:Rewrite In Terms of SINE and COSINE:
sin^2 θ / 1 / sinθ * sin^2 θ / cos^2 θ
Simplify the Denominator:sin^2 θ / sin^3 θ / cos^2 θ
Multiply by the Reciprocal:sin^2 θ * cos^2 θ / sin^3 θ
Cancel out the Common Factors:sin^2 θ * cos^2 θ / sin^3 θ = sin θ * cos^2 θ / sin^2 θ
Cancel sin θ from Numerator and Denominator:sin θ * cos^2 θ / sin^2 θ = sin θ cos^2 θ
Draw the Conclusion: Match with the given options:Therefore, Therefore, The simplified expression is
OPTION (B): sin θ cos^2 θ,
Which corresponds to:sin^2 θ / csc θtan^2 θ is OPTION (B): sin θ cos^2 θ,
I hope this helps you!
PLEASE HELP QUICKLY: (FIRST ANSWER GETS BRAINLIEST)
You are buying batteries, a stereo, and some CDs from the I.B. Electronics store. You can buy from this store online or in a physical store. You have a coupon for 10% off that can only be used in the physical store and a $5.00 off coupon that can only be used online. The sales tax of 5% only applies to the physical store. Shipping for the online store is a flat rate of $6.99. You are trying to decide whether to shop at the physical store or the online store. Using the pricing information below, determine which store would cost less after all discounts, taxes, and shipping fees have been applied.
Item Quantity Physical Store Online Store
Batteries 2 packs $5.99/pack $4.99/pack
Stereo 1 system $100.00/system $90.00/system
CDs 3 CDs $7.95/CD $8.95/CD
It would cost less to purchase the items from the physical store.
There is not enough information given.
The cost will be same at both stores.
Answer:
the answers will be the cd part because it's part the cost
Can anybody help me on this please
Answer: -53, 53
Step-by-step explanation:
It’s asking for the slope first, so let’s find it:
First, let’s determine our coordinates.
We have (1, 930) and (6, 655).
The slope equation is \(\frac{y_1 - y_2}{x_1 - x_2}\), so let our (1, 930) be our x_1 and y_1, and (6, 655) be our x_2 and y_2.
So, we have,
= \(\frac{655-930}{6-1}\)
This simplifies to
= \(\frac{-265}{5}\)
which is -53.
Therefore, the slope is -53, so the balance decrease by $53 each month.
f(x, y) = 3 sin(x) sin(y), − < x < , − < y < local maximum value(s) local minimum value(s) saddle point(s) (x, y, f) =
To find the local maximum, local minimum, and saddle points of the function f(x, y) = 3 sin(x) sin(y), we need to compute its partial derivatives with respect to x and y, and then find the critical points by setting the derivatives equal to zero.
First, let's find the partial derivatives:
∂f/∂x = 3 cos(x) sin(y)
∂f/∂y = 3 sin(x) cos(y)
Next, we set these derivatives equal to zero and solve for x and y:
For ∂f/∂x = 3 cos(x) sin(y) = 0:
cos(x) = 0 or sin(y) = 0
If cos(x) = 0, then x = π/2 + nπ, where n is an integer.
If sin(y) = 0, then y = mπ, where m is an integer.
For ∂f/∂y = 3 sin(x) cos(y) = 0:
sin(x) = 0 or cos(y) = 0
If sin(x) = 0, then x = nπ, where n is an integer.
If cos(y) = 0, then y = π/2 + mπ, where m is an integer.
Now, we can evaluate f(x, y) at the critical points (x, y) we found:
1) (x, y) = (nπ, mπ)
f(x, y) = 3 sin(nπ) sin(mπ) = 0
These are saddle points since the value of f is zero at these points.
2) (x, y) = (π/2 + nπ, mπ)
f(x, y) = 3 sin(π/2 + nπ) sin(mπ) = 3\((-1)^n\) sin(mπ) = 0
These are also saddle points since the value of f is zero at these points.
Therefore, the function f(x, y) = 3 sin(x) sin(y) has saddle points at all the critical points (x, y) = (nπ, mπ) and (x, y) = (π/2 + nπ, mπ), where n and m are integers. There are no local maximum or local minimum points for this function.
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someone actually help please!!! how much is 7/9 of -3/14
Answer:-0.16666666666
Step-by-step explanation:
Round 161.69 to the nearest tenth
Answer:
To the Nearest Tenth?!
I got's you my G
= 161.7
Step-by-step explanation:
the original price of an item is reduced by 40% for a sale
When the original price of an item is reduced by 40% for a sale, the new price is calculated by subtracting 40% of the original price from the original price.
To calculate the new price of an item after a 40% reduction, we need to subtract 40% of the original price from the original price.
Let's say the original price of the item is P. To find the new price, we subtract 40% of P from P. Mathematically, it can be expressed as:
New Price = Original Price - (40% of Original Price)
We can simplify the calculation by converting 40% to a decimal. 40% is equivalent to 0.40. Therefore, the calculation becomes:
New Price = Original Price - (0.40 * Original Price)
Simplifying further:
New Price = Original Price * (1 - 0.40)
New Price = Original Price * 0.60
So, when the original price of an item is reduced by 40% for a sale, the new price is 60% of the original price.
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Write an equation in standard form of the line that passes through (7,-3) and has a slope of 4.
Answer:
equation of line
step one
(7,-3) (x,y)
slope = y-(-3) = 4
x-7 1
= 4(x-7) = 1(y+3)
4x-28=y+3
4x-28-y-3 =0
4x-y-31=0
equation of line is = 4x-y-31=0
If a public utility company is considered a monopolist, which of the following is not true? A. The company's demand curve and supply curve are upward sloping. B. Its price must be higher than its marginal revenue. C. For the company to practice price discrimination, there should not be any resale of its product. D. Its profit maximizing quantity is determined where its marginal revenue equals its marginal cost.
For the company to practice price discrimination, there should not be any resale of its product, is not true if a public utility company is considered a monopolist. This is because price discrimination involves charging different prices to different groups of customers based on their willingness to pay. Resale of the product can actually facilitate price discrimination as it allows different customers to buy the product at different prices and then resell it to others. The other options are true for a monopolist, such as having upward sloping demand and supply curves, charging a price higher than its marginal revenue, and determining profit maximizing quantity at the point where marginal revenue equals marginal cost.
Let's analyze each statement:
A. The company's demand curve and supply curve are upward sloping.
This statement is NOT true for a monopolist. A monopolist faces a downward sloping demand curve, which means that they can increase the quantity sold by lowering the price. The supply curve does not apply in the traditional sense for monopolists, as they have the power to set both the price and quantity produced.
B. Its price must be higher than its marginal revenue.
This statement is true for a monopolist. Under a monopoly, the price charged by the company is higher than its marginal revenue due to the downward-sloping demand curve.
C. For the company to practice price discrimination, there should not be any resale of its product.
This statement is true. In order for a monopolist to successfully engage in price discrimination, they must prevent the resale of their product, ensuring that consumers cannot undercut the monopolist's pricing strategy.
D. Its profit maximizing quantity is determined where its marginal revenue equals its marginal cost.
This statement is true. A monopolist maximizes its profit by producing the quantity where marginal revenue equals marginal cost, and then setting the price based on the demand curve at that quantity.
So, the statement that is NOT true for a public utility company considered as a monopolist is: A. The company's demand curve and supply curve are upward sloping.
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This past winter, 643 flamingos migrated to Gordon Lake. A researcher states that the number of flamingos migrating to the lake is decreasing by 12 birds every year. Which of the following represents the number of flamingos, n, that will migrate to the lake t winters from last winter if the researcher’s trend continues? A. t = 643 - 12n B. n = 643 - 12t C. t = 12 - 643n D. n = 12 - 643t
Answer:
n=643-12t
i had this question on an exam and got it right