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3 years ago

Use the graph to write an equation for the parabola.

Mathematics

1 answer:

tia_tia [17]3 years ago

8 0

D
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Why is a variable exponent a number plus a variable adds eg: (x)*+(x) =?<br>

oksano4ka [1.4K]

Answer:

10+10=20

debes omer bien putasc

3 0

2 years ago

The sector COB is cut from the circle with center O. The ratio of the area of the sector removed from the whole circle to the ar

mafiozo [28]

Answer:

$Ratio = \frac{R^2 - r^2 }{ r^2}$

Step-by-step explanation:

Given

See attachment for circles

Required

Ratio of the outer sector to inner sector

The area of a sector is:

$Area = \frac{\theta}{360}\pi r^2$

For the inner circle

$r \to radius$

The sector of the inner circle has the following area

$A_1 = \frac{\theta}{360}\pi r^2$

For the whole circle

$R \to Radius$

The sector of the outer sector has the following area

$A_2 = \frac{\theta}{360}\pi (R^2 - r^2)$

So, the ratio of the outer sector to the inner sector is:

$Ratio = A_2 : A_1$

$Ratio = \frac{\theta}{360}\pi (R^2 - r^2) : \frac{\theta}{360}\pi r^2$

Cancel out common factor

$Ratio = R^2 - r^2 : r^2$

Express as fraction

$Ratio = \frac{R^2 - r^2 }{ r^2}$

6 0

2 years ago

Solve for x: 2+3 (x+2x) = -2x(2-4) +1

Ronch [10]

Answer:

x = -1/5

Step-by-step explanation:

2+3 (x+2x) = -2x(2-4) +1

Combine like terms

2+3(3x) = -2x (-2) +1

Distribute

2+9x = 4x +1

Subtract 4x from each side

2+9x-4x = 4x+1-4x

2+5x = 1

Subtract 2 from each sdie

5x = 1-2

5x = -1

Divide by 5

5x/5 = -1/5

x = -1/5

7 0

3 years ago

What is the approximate value of 42 using benchmark

cestrela7 [59]

√42
6²=36
7²=49
(6 1/2)² = 42.25
√42 ≈ 6.5

5 0

2 years ago

31+31 = 62 whats the answer

amm1812

Step-by-step explanation:

That is the answer? Is there another question?

6 0

3 years ago

Read 2 more answers