Answer:
Step-by-step explanation:
Hi there,
The formula depends on what shape you are dealing with. There is no way to determine what formula you need without knowing what type of figure you are dealing with.
If 4x + 12 = 76, then x =
Answer:
x = 16
Step-by-step explanation:
subtract 12 from both sides to isolate the variable and its coefficient
4x = 64
divide both sides by 4 to get x
x = 16
Answer:
x = 16
Step-by-step explanation:
4x+12=76
Step 1: Subtract 12 from both sides.
4x + 12 - 12 = 76 - 12
4x = 64
Step 2: Divide both sides by 4.
\(\frac{4x}{4} = \frac{64}{4}\)
x = 16
A maintenance firm has gathered the following information regarding the failure mechanisms for air conditioningsystems:
Yes No
Evidence of electrical failure Yes 55 17
Electrical failure No 32 3
The units without evidence of gas leaks or electrical failure showed other types of failure. If this is a representative sample of AC failure, find the probability.
a. That failure involves a gas leak
b. That there is evidence of electrical failure given that there was a gas leak
c. That there is evidence of a gas leak given that there is evidence of electrical failure
Answer:
A) 0.8131 ≈ 0.81
B) 0.6322 ≈ 0.63
C) 0.7639 ≈ 0.77
Step-by-step explanation:
A)
Total number of units
= 55 + 32 + 17 + 3
= 107
hence the probability that the failure involves a gas leak
= ( 55 + 32 ) / 107
= 0.8131
B) probability that there is evidence of electrical failure given tat there is a gas leak
P ( A / B ) = \(\frac{P(A n B)}{P(B)}\)
P( A∩B ) = 55/107 = 0.5140
P ( B ) = ( 55 + 32 ) / 107 = 0.8131
hence P ( A / B ) = 0.5140 / 0.8131 = 0.6322
A = failure due to electrical
B = failure due to gas leak
C) Probability of a gas leak given that there is evidence of electrical failure
P ( B / A ) = \(\frac{P(BnA)}{P(A)}\)
P ( B ∩ A ) = 0.5140
P( A ) = ( 55 + 17 ) / 107 = 0.6729
hence P ( B / A ) = 0.5140 / 0.6729 = 0.7639
Evaluate 4n2 for n = 8.
Answer:
First equation: 4n^2=256
Second equation: 4n*2=64
Step-by-step explanation:
First equation:
4n^2 for n = 8.
Substitute 8 for n and solve:
4*(8)^2=4*64=256
4n^2=256
Second equation:
4n*2 for n = 8.
Substitute 8 for n and solve:
4*(8)*2=32*2=64
4n*2=64
I hope this helped you.
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Have a great day!!!!!!!!!!!!
amanda teaches the art of quilling to 4 students. These students each teach art of quilling to 4 other students. If this process continues for 5 generation after amanda, BLANK people other than amanda will know the art of qiulling
Answer:
1024
Step-by-step explanation:
4 * 4 * 4 * 4 * 4
I suck at math so can you help with this is a test so Yh
Pls help I’ll brainlest
Answer:
z = 29
Step-by-step explanation:
z - 4 = 25
You were going the right way;you need to add that value to each side:
z - 4 ( +4 ) = 25 ( +4 )
z = 29
Question is attached.
The equation of the line for the given graph will be y=0.35x+1
What is a straight line?A straight line is a combination of endless points joined on both sides of the point.
The slope 'm' of any straight line is given by:
A linear equation has the form y = mx + b in the slope-intercept format. X and Y are the variables in the equation. The values m and b represent the line's slope (m) and the value of y when x is 0.
\(\rm m =\dfrac{y_2-y_1}{x_2-x_1}\)
The slope of the line is,
m = (1.5-2)/(1-2)
m=0.5
The equation of the line passes through (2,2)(1.1.5) from the graph is,
y-2=0.5(x-2)
y-2=0.5x-1
y=0.35x+1
Thus, the equation of the line for the given graph will be y=0.35x+1
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Answer correctly for brainlist
Answer:
Quadrilaterals
Step-by-step explanation:
find the surface area of the figure
Answer: 2.68cm²
Step-by-step explanation:
The front face has surface area 4x11 = 44mm². The one facing the left has surface area 6x4 = 24mm². Finally, the one facing upwards has surface area 11x6 = 66mm². Adding these up, we get 134mm² for the three faces we can see. Double this for the ones which are hidden and we get 268mm², or 2.68cm².
4,7,14,49, next number is what
Part of the graph of the function f(x) = (x – 1)(x + 7) is shown below.
Which statements about the function are true? Select three options.
The vertex of the function is at (–4,–15).
The vertex of the function is at (–3,–16).
The graph is increasing on the interval x > –3.
The graph is positive only on the intervals where x < –7 and where
x > 1.
The graph is negative on the interval x < –4.
Answer:
The vertex of the function is at (–3,–16)
The graph is increasing on the interval x > –3
The graph is positive only on the intervals where x < –7 and where
x > 1.
Step-by-step explanation:
The graph of \(f(x)=(x-1)(x+7)\) has clear zeroes at \(x=1\) and \(x=-7\), showing that \(f(x) > 0\) when \(x < -7\) and \(x > 1\). To determine where the vertex is, we can complete the square:
\(f(x)=(x-1)(x+7)\\y=x^2+6x-7\\y+16=x^2+6x-7+16\\y+16=x^2+6x+9\\y+16=(x+3)^2\\y=(x+3)^2-16\)
So, we can see the vertex is (-3,-16), meaning that where \(x > -3\), the function will be increasing on that interval
A dairy farmer wants to mix a 75% protein supplement and a standard 50% protein ration to make 1400 pounds of a high-grade 70 % protein ration. How manypounds of each should he use?
Given the following question:
Protein A = 75%
Protein B = 50%
Mixture = 70% = 1400
75% x + 50% (1400 - x) = 75.00%
sophie swims 10 miles in each practice session. How long did her practice take the day she was swimming with an average speed of three times slower than m miles per hour
HELPPPP PLEASE PLEASE 15points
Answer:
The same shape but not the same size
Step-by-step explanation:
If two figures have the same shape and the same size, they are defined as congruent.
As long as all the angles and sides are proportionally similar then the shapes have similarity.
Ride 'em Rodeo is a traveling rodeo show. Last night, there were 5 people wearing
boots at the rodeo for every 2 people who were not wearing boots.
If there were 125 people wearing boots at the rodeo last night, how many people were
there altogether?
The total number of people that were there altogether at the radio show is 175 people.
How to calculate the value?From the information, there were 5 people wearing boots at the rodeo for every 2 people who were not wearing boots.
It was also illustrated that there were 125 people wearing boots at the rodeo last night, those that aren't wearing boots will be illustrated by x.
2/5 = x/125
Collect like terms
5x = 125 × 2
5x = 250
Divide
x = 250/5
x = 50
Those not wearing boots = 50
Total number of people will be:
= Those wearing boots + Those not wearing
= 125 + 50
= 175
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Answer:
175
Step-by-step explanation:
At a sale this week, a table is being sold for $429. This is a 34% discount from the original price, what was the original price?
Answer:
$574.86
Step-by-step explanation:
First you need to find 34% of 429 which is 145.86. Then you add the 145.86 to 429 which ends up being a total of $574.86.
Hope this helped :)
The function f(x) = 1.25x + 12 represents the cost, in dollars, of a large pizza with x toppings. What does the 1.25 represent?
A the cost for each topping on a large pizza
B. the cost of a large pizza without toppings
C. the pizza delivery charge
D. the total cost of a large pizza
The diameter of a circle is 222 units.
What is the radius of the circle?
units
Answer:
111
Step-by-step explanation:
divide by 2 to find the radius
Find the center and radius of the circle represented by the equation below.
Answer:
centre = (5, - 6 ) , radius = 7
Step-by-step explanation:
the equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k ) are the coordinates of the centre and r is the radius
given
x² + y² - 10x + 12y + 12 = 0 ( subtract 12 from both sides )
x² + y² - 10x + 12y = - 12 ( collect terms in x/ y )
x² - 10x + y² + 12y = - 12
using the method of completing the square
add ( half the coefficient of the x/ y terms )² to both sides
x² + 2(- 5)x + 25 + y² + 2(6)y + 36 = - 12 + 25 + 36
(x - 5)² + (y + 6)² = 49 = 7² ← in standard form
with centre (5, - 6 ) and radius = 7
Answer:
Center = (5, -6)
Radius = 7
Step-by-step explanation:
To find the center and the radius of the circle represented by the given equation, rewrite the equation in standard form by completing the square.
To complete the square, begin by moving the constant to the right side of the equation and collecting like terms on the left side of the equation:
\(x^2-10x+y^2+12y=-12\)
Add the square of half the coefficient of the term in x and the term in y to both sides of the equation:
\(x^2-10x+\left(\dfrac{-10}{2}\right)^2+y^2+12y+\left(\dfrac{12}{2}\right)^2=-12+\left(\dfrac{-10}{2}\right)^2+\left(\dfrac{12}{2}\right)^2\)
Simplify:
\(x^2-10x+(-5)^2+y^2+12y+(6)^2=-12+(-5)^2+(6)^2\)
\(x^2-10x+25+y^2+12y+36=-12+25+36\)
\(x^2-10x+25+y^2+12y+36=49\)
Factor the perfect square trinomials on the left side:
\((x-5)^2+(y+6)^2=49\)
The standard equation of a circle is:
\(\boxed{(x-h)^2+(y-k)^2=r^2}\)
where:
(h, k) is the center.r is the radius.Comparing this with the rewritten given equation, we get
\(h = 5\)\(k = -6\)\(r^2 = 49 \implies r=7\)Therefore, the center of the circle is (5, -6) and its radius is r = 7.
Suppose a point has polar coordinates (3,-π/6)
Find two additional polar representations of the point.
Write each coordinate in simplest form with the angle in [-2π, 2π].
The second additional Polar representation of the point (3,-π/6) can be ($\frac{3\sqrt{6}}{2}$, $\frac{5\pi}{3}$) or ($\frac{3\sqrt{6}}{2}$, $-\frac{7\pi}{3}$).
We have a point in polar coordinates (3,-π/6) and we have to find two additional polar representations of this point. Let's recall the formula for converting from Cartesian to polar coordinates :x = rcosθy = rsinθAnd
the formula for converting from polar to Cartesian coordinates :r = √(x²+y²)θ = arctan(y/x)So, we can use the second formula to convert (3,-π/6) to Cartesian coordinates:$$x=3\cos(-\frac{\pi}{6})=3\cdot \frac{\sqrt{3}}{2}=\frac{3\sqrt{3}}{2}$$$$y=3\sin(-\frac{\pi}{6})=3\cdot \frac{-1}{2}=-\frac{3}{2}$$
Now we can use the first formula to convert back to polar coordinates:$$r=\sqrt{(\frac{3\sqrt{3}}{2})^2+(-\frac{3}{2})^2}=\frac{3\sqrt{6}}{2}$$$$\theta=\arctan(-\frac{3}{3\sqrt{3}})=-\frac{\pi}{3}$$
So, the first additional polar representation of the point (3,-π/6) is ($\frac{3\sqrt{6}}{2}$, $-\frac{\pi}{3}$).To find the second polar representation,
we need to add or subtract multiples of π to the angle until it is in the range [-2π, 2π].$$-\frac{\pi}{3}+2\pi=\frac{5\pi}{3}$$$$-\frac{\pi}{3}-2\pi=-\frac{7\pi}{3}$$
So, the second additional polar representation of the point (3,-π/6) can be ($\frac{3\sqrt{6}}{2}$, $\frac{5\pi}{3}$) or ($\frac{3\sqrt{6}}{2}$, $-\frac{7\pi}{3}$).
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A moving truck rental company charges $37.95 to rent a truck, plus $0.64 per mile. Suppose the function C(d) gives the total cost of renting the truck for one day if you drive 38 miles.
Required:
Give the formula for C(d). Make sure to give the complete formula as an equation.
Answer:
C(d) = 0.64c +37.95
Step-by-step explanation:
C(38) = 0.64(38) + 37.95 = $62.27
what is the quotient of 14,875÷35
Answer:
424.8571428571429
Step-by-step explanation:
Answer:
Step-by-step explanation:
Select all the algebraic expressions equivalent to m5/n5
A: (mn–1)5
b: (mn)5
C :[(mn2)]–3
d: (mn)–5
e: m5n–5
Use the data in the table to describe how the population in a town is changing. Then identify a function that
models the data. Use your function to predict the population after 6 years.
Population in a Town
Year
0
1
2
3
Population
600
1200
2400
4800
O There is a constant ratio 2
y = 600(2)*
38,400
O There is a constant ratio 2
y = 600 + 2x
5412
O There is a constant ratio 4
y = 600(2x)
7200
www
There is a constant ratio 4
y = 600 + 2x
664
D
The data given illustrates that there's a constant ratio of 2 and y = 600(2)^x; 38400
How to compute the ratio?The ratio based on the information given will be:
= 1200/600
= 2
Therefore, the constant ratio is 2.
In 6 years, the population will be:
= 600 × 2^6
= 600 × 64
= 38400
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Dennis is growing tomatoes in his backyard. In one row of his garden, he has 8 plants. Each plant is separated from the next plant by 1.5 feet of space. Ignoring the width of each plant stem, what is the distance from the first plant to the last plant, in feet?
the distance from the first plant to the last plant, ignoring the width of each plant stem, is 10.5 feet.
Why is it?
To find the distance from the first plant to the last plant, we need to add up the distances between each adjacent pair of plants. Since there are 8 plants, there are 7 pairs of adjacent plants, and each pair is separated by 1.5 feet.
So, the total distance from the first plant to the last plant is:
7 ×1.5 = 10.5 feet
Therefore, the distance from the first plant to the last plant, ignoring the width of each plant stem, is 10.5 feet.
Distance refers to the measurement of the physical space between two points or objects. It is a scalar quantity that only considers the magnitude of the separation between two points and does not take into account the direction of the separation.
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In △ABC,a=14 , b=17 , and c=22 . Find m∠A . law of sines 4 A. 49.4 B. 39.5 C. 55.2 D. 50.45
The correct option is not available among the choices provided (A. 49.4, B. 39.5, C. 55.2, D. 50.45).
To find the measure of angle A in triangle ABC using the Law of Sines, we can use the formula:
sin(A)/a = sin(B)/b = sin(C)/c
Given that a = 14, b = 17, and c = 22, we can substitute these values into the formula:
sin(A)/14 = sin(B)/17 = sin(C)/22
To find angle A, we need to solve for sin(A) and then take the inverse sine (arcsin) of that value.
First, let's find sin(B) using the given information:
sin(B)/17 = sin(A)/14
sin(B) = (17 * sin(A))/14
Next, let's find sin(C):
sin(C)/22 = sin(A)/14
sin(C) = (22 * sin(A))/14
Since the sum of angles in a triangle is 180 degrees, we can calculate angle C:
angle C = 180 - angle A - angle B
Now, we can substitute the expressions for sin(B) and sin(C) into the equation:
(22 * sin(A))/14 = (17 * sin(A))/14 + sin(B)
To solve for sin(A), we can multiply both sides of the equation by 14:
22 * sin(A) = 17 * sin(A) + 14 * sin(B)
22 * sin(A) - 17 * sin(A) = 14 * sin(B)
5 * sin(A) = 14 * sin(B)
sin(A) = (14/5) * sin(B)
Finally, we can take the inverse sine (arcsin) of sin(A) to find the measure of angle A:
A = arcsin((14/5) * sin(B))
Now, since the values of angles B and C are not provided, it is not possible to directly determine the measure of angle A using the given information.
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Which fraction is equal to 35%
Answer:
7/20 is the fraction!!!!
Answer
\(\frac{35}{100}\) is equal to 35%.
which value of y makes the inequality 3y^2+2(y-5)>8 true?
A. y = 0
B. y = –1
C. y = –2
D. y = –3
Help!! Factor the common factor out of each expression
Therefore , the solution of the given problem of equation comes out to be factor is (5b)(-5b+3).
What is the equation?A formula for connecting two statements using the equal sign (=) to denote equivalence is known as a mathematical equation. A mathematical equation in algebra is a statement that proves the equality of two mathematical expressions. For instance, the formula 3x + 5 = 14 places an equal sign between the variables 3x + 5 and 14. The mathematical relationship between the two sentences on either side of a letter is established. Most of the time, the symbol serves as both the one and only variable. for instance, 2x – 4 = 2.
Here,
the two numbers' primary factors are as follows:
-25\(b^{2}\) + 15b
Common prime factors can be multiplied to determine the GCF:
=> -25\(b^{2}\) = -(5)(5) * \(b^{2}\)
=> 15b = (5)(3)b
The expression can be factored in the following fashion because the GCF is 5b:
=> -(5)(5) * \(b^{2}\) + (5)(3)b
=> (5b)(-5b+3)
Therefore , the solution of the given problem of equation comes out to be factor is (5b)(-5b+3).
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determine whether y=2x^2 +1 is a function
Answer: Yes, this is a function!
Step-by-step explanation: Here are the requirements for determining if a 2-variable equation is a function or not.
2.
Each input should correspond to only one output
. In our case, any value of x you put into this equation only gives one value of y. We can verify this graphically using a simple test called the
vertical line test.
To do this, graph the function with the x axis being the horizontal axis and the y axis being the vertical axis (this matters!) In our case, this will be a parabola opening upwards. The test says that if I can draw vertical lines through every part of the graph and each vertical line only crosses the graph once, the equation is a function. In our case, I can draw vertical lines through everywhere in a parabola and they will only cross once. This shows that we have a function!
Hope this helps!
Bye for now,
Iz