Answer:
0.75
Step-by-step explanation:
the perimeter of a triangle is 32 feet. One side of the triangle is 11 feet longer than the second side. The third side is 9 feet longer than the second side. Find the length of each side.
Answer:
One side - 15 feet
Second side - 4 feet
Third side - 13 feet
Step-by-step explanation:
Let's call the sides A B and C, respectively.
We know that:
A = B + 11
C = B + 9
and that
A + B + C = 32
Please note that we have 3 equations and 3 unknowns. We can solve this, we'll use substitution.
A + B + C = (B + 11) + B + (B + 9) = 32
3B + 20 = 32
3B = 12
B = 4
The sides have lengths of 4+11 = 15, 4 and 4+9 = 13. This is in fact a proper triangle (because the shorter sides add up to more than the longer side).
factor and solve
x^2-4x=5
Let’s solve the equation x^2 - 4x = 5 by factoring:
First, we’ll move all the terms to one side of the equation:
x^2 - 4x - 5 = 0
Now, we’ll factor the left side of the equation. We’re looking for two numbers that multiply to -5 and add to -4. Those numbers are -5 and 1. So we can write:
(x - 5) (x + 1) = 0
Now we’ll use the zero-product property to solve for x. This property states that if the product of two numbers is zero, then at least one of the numbers must be zero. So we have:
x - 5 = 0 or x + 1 = 0
Solving each equation separately, we find that x = 5 or x = -1.
So, the solutions to the equation x^2 - 4x = 5 are x = 5 and x = -1.
what is the function of this graph?
Answer:
-2 X3
Step-by-step explanation:
A part time seamstress made $8881.93 last year. If she claimed herself as an exemption for $3650 and had a $5700 standard deduction, what was her taxable income last year?
A: $3181.93
B: $468.07
C: $0
D: $5231.93
Answer:
c
Step-by-step explanation:
A part-time seamstress made $8881.93 last year. The taxable income is $0.
We have given that,
A part-time seamstress made $8881.93 last year. If she claimed herself as an exemption for $3650 and had a $5700 standard deduction.
We have to determine, what was her taxable income last year.
What is the taxable income?
Taxable income is the portion of your gross income used to calculate how much tax you owe in a given tax year.
Therefore the taxable income is $0.
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Match the following. Match the items in the left column to the items in the right column. 1. domain the first element of a relation or function; also known as the input value. 2. output a relation in which every input value has exactly one output value. 3. input the x-value of a function. 4. relation any set of ordered pairs (x, y) that are able to be graphed on a coordinate plane. 5. function the y-value of a function. 6. range the second element of a relation or function; also known as the output value.
The matching of items and their corresponding descriptions are 1. Domain, 2.Output, 3. Input, 4. Relation, 5. Function, and 6. Range.
What is the appropriate matching of the following items?1. Domain - the first element of a relation or function; also known as the input value.
3. Input - the x-value of a function.
6. Range - the second element of a relation or function; also known as the output value.
4. Relation - any set of ordered pairs (x, y) that are able to be graphed on a coordinate plane.
2. Output - a relation in which every input value has exactly one output value.
5. Function - the y-value of a function.
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Can y'all help me with this?
an amusement park sells child and adult tickets at a ratio of 7 child tickets for every 1 adult ticket. on saturday, they sold 147 child tickets. how many total tickets did the amusement park sell on saturday?
Answer:
189 tickets
Step-by-step explanation:
The ratio 8 : 1 has a difference of 7 ratio units. The difference in tickets is 147, so each ratio unit must represent ...
(147 tickets)/(7 ratio units) = 21 tickets/ratio unit
The total sales was 8+1 = 9 ratio units, so was ...
(9 ratio units)(21 tickets/ratio unit) = 189 tickets
brainy please
Find the product using model or drawing
1. 2/3 x 1/5=
2. 1/2 of 3/4=
3. 1/4 x 2/6=
4. 1/7 of 2/3=
5. 4/8 x 3/5=
Simplify the following
6. 17/25 of 75=
7. 7/6 x 24/28=
8. 12 x 1 5/6=
9. 4/5 x 9/11=
10. 6 2/3 x 12/15=
can someone answer this ill give u brainliest
Fraction multiplication involves multiplying the numerators and the denominators to get the numerator and the denominator of the product respectively
Please find the attached diagrams
1. \(\dfrac{2}{15}\), 2. \(\dfrac{3}{8}\), 3. \(\dfrac{1}{12}\), 4. \(\dfrac{7}{21}\), 5. \(\dfrac{3}{10}\)
6. 51, 7. 1, 8. 22, 9. \(\dfrac{36}{55}\), 10. \(5\dfrac{1}{3}\)
Reasons:
The process of multiplication of factors using a model includes;
Creating a table that have the number of rows and columns equal to the values in the denominator of the two fractions respectivelyShading the number of columns given by the numerator of the fraction that has a denominator equal to the number of columns in the tableShading the number of rows given by the numerator of the fraction that has a denominator equal to the number of rows in the tableEnsuring that the common area are shaded to a different colorSimplifying the result1. \(\dfrac{2}{3} \times \dfrac{1}{5} = \dfrac{2}{15}\)
2. \(\dfrac{1}{2} \times \dfrac{3}{4} = \dfrac{3}{8}\)
3. \(\dfrac{1}{4} \times \dfrac{2}{6} = \dfrac{2}{24} = \dfrac{1}{12}\)
4. \(\dfrac{1}{7} \times \dfrac{2}{3} = \dfrac{7}{21}\)
5. \(\dfrac{4}{8} \times \dfrac{3}{5} = \dfrac{12}{40} = \dfrac{3}{10}\)
Second part
6. When calculating fractions, 'of' means to 'multiply by', therefore, we have;
\(\dfrac{17}{25} \times 75= \dfrac{17}{25} \times 25 \times 3 = 17 \times 3 = 51\)
7. \(\dfrac{7}{6} \times \dfrac{24}{28} = \dfrac{7}{6} \times \dfrac{6 \times 4}{7 \times 4} = \dfrac{7}{6} \times \dfrac{6}{7 } = 1\)
8. \(12 \times 1\dfrac{5}{6} =6 \times 2 \times \dfrac{11}{6} =2 \times {11} = 22\)
9. \(\dfrac{4}{5} \times \dfrac{9}{11} = \dfrac{4 \times 9}{5 \times 11} = \dfrac{36}{55}\)
10. \(6\dfrac{2}{3} \times \dfrac{12}{15} =\dfrac{20}{3} \times \dfrac{12}{15} = \dfrac{4 \times 5}{3} \times \dfrac{4 \times 3}{5 \times 3} = \dfrac{4}{3} \times {4} = \dfrac{16}{3} = 5\dfrac{1}{3}\)
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I need help pleaseeeeeee
Answer:
1:2
Step-by-step explanation:
In a sale, the price of a TV is reduced from £250 to £180
What is the percentage decrease?
Answer:
28%
Step-by-step explanation:
250÷ .28 = 180
.28 = 28%
A) Find an equation for the line perpendicular to the tangent line to the curve y=x^3-4x+6 at the point (2,6)
-The equation is y=
b) What is the smallest slope on the curve? At what point on the curve does the curve have this slope?
-The smallest slope on the curve is
-The curve has the smallest slope at the point
c) Find equations for the tangent lines to the curve at the points where the slope of the curve is 8.
Answer:
f(x) = x³ - 4x + 6
f'(x) = 3x² - 4
a) f'(2) = 3(2²) - 4 = 12 - 4 = 8
6 = 8(2) + b
6 = 16 + b
b = -10
y = 8x - 10
b) 3x² - 4 = 0
3x² = 4, so x = ±2/√3 = ±(2/3)√3
= ±1.1547
f(-(2/3)√3) = 9.0792
f((2/3)√3) = 2.9208
c) 3x² - 4 = 8
3x² = 12
x² = 4, so x = ±2
f(-2) = (-2)³ - 4(-2) + 6 = -8 + 8 + 6 = 6
6 = -2(8) + b
6 = -16 + b
b = 22
y = 8x + 22
f(2) = 6
y = 8x - 10
The equation perpendicular to the tangent is y = -1/8x + 25/4
-The smallest slope on the curve is 2.92
The curve has the smallest slope at the point (1.15, 2.92)
The equations at tangent points are y = 8x + 16 and y = 8x - 16
Finding the equation perpendicular to the tangentFrom the question, we have the following parameters that can be used in our computation:
y = x³ - 4x + 6
Differentiate
So, we have
f'(x) = 3x² - 4
The point is (2, 6)
So, we have
f'(2) = 3(2)² - 4
f'(2) = 8
The slope of the perpendicular line is
Slope = -1/8
So, we have
y = -1/8(x - 2) + 6
y = -1/8x + 25/4
The smallest slope on the curveWe have
f'(x) = 3x² - 4
Set to 0
3x² - 4 = 0
Solve for x
x = √[4/3]
x = 1.15
So, we have
Smallest slope = (√[4/3])³ - 4(√[4/3]) + 6
Smallest slope = 2.92
So, the smallest slope is 2.92 at (1.15, 2.92)
The equation of the tangent lineHere, we set f'(x) to 8
3x² - 4 = 8
Solve for x
x = ±2
Calculate y at x = ±2
y = (-2)³ - 4(-2) + 6 = 6: (-2, 0)
y = (2)³ - 4(2) + 6 = 6: (2, 0)
The equations at these points are
y = 8x + 16
y = 8x - 16
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Find a and d for the function f(x) = a cos(x) + d such that the graph of f matches the figure.
Answer:
a = 2d = 1Step-by-step explanation:
The value of d is the average of the maximum and minimum values of the graph:
d = (3 +(-1))/2 = 1
The value of 'a' is the difference between the maximum value and the value of d:
a = 3 -d = 3 -1 = 2
The required values of 'a' and 'd' are 2 and 1, respectively.
cesar gasto el 15% de sus ahorros en un celular por lo que ahora le queda 2.125 dolares ahorrados ¿cuanto dinero tenia inicialmente cesar?
Cesar initially had $2,500 in savings.
Let's solve the problem step by step.
Let's assume that the initial amount of money Cesar had is represented by "x" dollars.
According to the problem, Cesar spent 15% of his savings on a cellphone, which means he has 85% of his initial savings left. We can represent this mathematically as:
0.85x = 2,125
To find the initial amount of money Cesar had, we need to solve for x. We can do this by dividing both sides of the equation by 0.85:
x = 2,125 / 0.85
Calculating this value:
x = 2,500
Cesar initially had $2,500 in savings.
Please note that the calculations are done assuming a straightforward interpretation of the problem. If there are additional factors or context that could affect the interpretation, it's important to consider them in order to arrive at an accurate answer.
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Plz help I am very confused I need help now plz
Answer:
-21
remember that when there is a positive and negative sign the product will always be negative
11. Interest earned: $10
Principal: $250
Interest rate: 4%
Time: ?
I just have a test due and can’t get these !!
Answer:
hello
Step-by-step explanation:
no sé soy nuevo jajajaja
How to do this problem
Answer:
a. geometric series
b. r_n = 100 × (0.75)^n ft
c. 400
Step-by-step explanation:
a.
Start: 100 ft
After 1 hour: 75% of 100ft = 100 ft × 0.75
After 2 hours: 75% of 100ft × 0.75 = 100 ft × 0.75²
After 3 hours: 75% of 100 ft × 0.75² = 100 ft × 0.75³
Notice what is happening to the radius as the hours pass.
With each passing hour, the radius is 0.75 times the previous radius.
Since each new term is the previous term multiplied by a constant, 0.75, this is a geometric series.
b.
At each hour, multiply 100 ft by 0.75 raised to the number of the hour.
a_n = 100 × (0.75)^n ft
The nth term is 100 times 0.75 to the nth power.
c.
The sum of all the radii is the sum of a series that has 100 as its first term, and each subsequent term is 0.75 times the previous term.
r_n = 100(0.75)^n
Since the constant ratio has an absolute value less than 1, the series has a sum.
S = a_1/(1 - r)
S = sum of infinite series
a_1 = first term
r = constant ratio
S = 100/(1 - 0.75)
S = 100/0.25
S = 400
What is the square root of ab2?
Answer:
Step-by-step explanation:
If two dice are rolled, what is the probability that the sum of the dots on the upward faces is 10
If the Federal Reserve sells $60,000 in Treasury bonds to a bank at 8%
interest, what is the immediate effect on the money supply?
A. It is increased by $64,800.
B. It is decreased by $60,000.
C. It is increased by $60,000.
D. It is decreased by $64,800.
If the Federal Reserve sells $60,000 in Treasury bonds to a bank at 8% interest, the immediate effect on the money supply is B. It is decreased by $60,000.
What decreases the money supply?One of the monetary factors that decreases the money supply in the economic is when the Federal Reserve raises the banks' reserve requirements.
Another factor that can decrease the money supply is the sale of treasury bonds to banks.
Raising the interest rates also decreases the money supply.
Thus, by selling $60,000 in Treasury bonds to a bank at 8% interest, it decreases the money supply.
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Please help I need to turn this is in about 10 min
Answer:
multiply them all and then divide by 2
what is the fact family for 6,7,13 what is the answer
Derek works 43 hours at a rate of pay of $15 per hour. He receives double pay over 40 hours. What is his gross pay?
The Gross pay which Derek gets is 690 dollars.
What is Gross Pay?Gross pay is what employees earn before taxes, benefits and other payroll deductions are withheld from their wages. The amount remaining after all withholdings are accounted for is net pay or take-home pay.
Here, Total hours worked by Derek = 43 hours
Rate of pay = $15 per hour
Rate of pay beyond 40 hours = $30 per hour
Now,
Rate of pay for the first 40 hours = 40 X 15 = $ 600
Since the pay rate doubles after 40 hours,
Rate of pay for the remaining 3 hours = 3 X 30 = $ 90
Gross Pay = 600 + 90 = $ 690
Thus, the Gross pay which Derek gets is 690 dollars.
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Is this a direct variation y=x+x
Answer:
x2=3
x1=2
y=10
Step-by-step explanation:
According to a salad recipe each serving require 6 teaspoons of vegetable oil and 9 teaspoons of vinegar and 24 teaspoons of vegetable oil were used how many teaspoons of vinegar should be used
Therefore, if 24 teaspoons of vegetable oil were used, we would need 16 teaspoons of vinegar to make the recipe correctly.
According to a salad recipe, each serving requires 6 teaspoons of vegetable oil and 9 teaspoons of vinegar. If 24 teaspoons of vegetable oil were used, we can determine the amount of vinegar needed for the recipe to be correct as follows:
First, we must determine the ratio of vinegar to oil in the recipe. To do this, we divide the amount of vinegar needed per serving (9 teaspoons) by the amount of oil needed per serving (6 teaspoons):
9 ÷ 6 = 1.5
This means that for every 1.5 teaspoons of oil used, we need 1 teaspoon of vinegar. Next, we use this ratio to determine the amount of vinegar needed when 24 teaspoons of oil are used:
1.5 ÷ 1 = 1.5
(teaspoons of oil per 1 teaspoon of vinegar)
24 ÷ 1.5 = 16
(teaspoons of vinegar needed)
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1. What is the measure
of ZABC?
A
98⁰
B
tc
2.
Answer:
∠ ABC = 49°
Step-by-step explanation:
the chord- tangent angle ABC is half the measure of the intercepted arc AB
∠ ABC = \(\frac{1}{2}\) AB = \(\frac{1}{2}\) × 98° = 49°
Given b(x)= (-3,7), state what the coordinates of this point will be of the following transformations are effected: 2b(x)
What is the slope of a line that is perpendicular to the line represented by the equation x – y = 8? 1 −1 8
keeping in mind that perpendicular lines have negative reciprocal slopes, let's check for the slope of the equation above
\(x-y=8\implies -y=-x+8\implies y=\stackrel{\stackrel{m}{\downarrow }}{1}x-8\impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array} \\\\[-0.35em] ~\dotfill\)
\(\stackrel{~\hspace{5em}\textit{perpendicular lines have \underline{negative reciprocal} slopes}~\hspace{5em}} {\stackrel{slope}{ 1 \implies \cfrac{1}{\underline{1}}} ~\hfill \stackrel{reciprocal}{\cfrac{\underline{1}}{1}} ~\hfill \stackrel{negative~reciprocal}{-\cfrac{\underline{1}}{1} \implies \text{\LARGE -1}}}\)
Which statement best
explains whether using a calculator or determining the solution by hand would be the most
efficient way to fully simplify the expression
5/8 + 1/8 + 2/5 - 1?
•The sum of the first two fractions can easily be determined, but because the third fraction has a different
denominator, solving this
using a calculator would most likely be more efficient.
•Adding and subtracting whole numbers and fractions is always a time-consuming process to complete by hand, so
solving this using a calculator would most likely be more efficient.
•The first calculation can be done quickly by hand, so solving this problem by hand would most likely
efficient.
be more
•
The denominators of the first two terms cancel each other out, so solving this problem
more efficient.
by hand would most likely be
Please hurry up I am timed
Answer:
The First one
Step-by-step explanation:
What is the radiua of a globe that has a volume of 113.10in³
The radius of the globe with a volume of 113.10 in³ is calculated to be
1.5 in
What is a globe?A globe is a spherical representation of the Earth, another heavenly body, or the celestial sphere. Globes have comparable functions as maps.
The globe has same shape as the sphere and hence we can use the formula fo volume of sphere to solve for a globe
The volume of sphere is solved using the formula/
v = 4/3 π r³
where
r is the radius of the sphere or globe
113.10 in³ = 4/3 π r³
π r³ = 3/4 * 113.10
π r³ = 9.825
r³ = 9.825 / π
r³ = 3.12739
r = ∛3.12739
r = 1.462 in
the radius of the globe is 1.5
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Find the values of x and y.
The value of x and y in the triangle are 0 and 4 respectively.
How to find the side of a triangle?The mid segment of a triangle is a line connecting the midpoints between two sides of a triangle. The mid segment theorem states that the midsegment connecting the midpoints of two sides of a triangle is parallel to the third side of the triangle, and the length of this midsegment is half the length of the third side .
Therefore,
x + 2 = 3 / 2 x + 2
x - 3 / 2 x = 2 - 2
-0.5x = 0
x = 0
Let's find y
2y - 1 = 3y - 5
2y - 3y = -5 + 1
-y = -4
y = 4
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