2 years ago

+

Mathematics

1 answer:

sineoko [7]2 years ago

7 0

Answer:

The answer is D.

Step-by-step explanation:

40.5 multiplied by 21 is 850.5

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The area of a cross section through the center of a sphere is 46 square inches. Find the surface area of the sphere.

gavmur [86]

Answer:

184 in.^2

Step-by-step explanation:

The cross section through the center of a sphere is a circle whose radius is equal to the radius of the sphere.

area of circle

$A_{circle} = \pi r^2$

$\pi r^2 = 46$

$r^2 = \dfrac{46}{\pi}$

$r = \sqrt{\dfrac{46}{\pi}}$

$r = 3.83 ~in.$

surface area of sphere

$SA = 4 \pi r^2$

$SA = 4 \times \pi \times (3.83)^2$

$SA = 184~in.^2$

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3 years ago

Identify p, b, and a. Do not solve for the unknown.<br><br> 10.9 is what percent of 34?

Rashid [163]

10.9 = x% of 34

10.9 is the amount
x% is the percent
34 is the base

8 0

3 years ago

Consider a graph of the equation y = −3x + 4. What is the y-intercept? (5 points)

Mariana [72]

Answer:

The y-intercept would be 4

Step-by-step explanation:

7 0

3 years ago

What is the best first step to take in solving the equation<br> x2+11x+24/ x2+3x =0

storchak [24]

x=root[3]{-1.500}=-1.14471

4 0

2 years ago

A line passes through (10,-1) and has a slope of -1/2 whats the equation of the line

8090 [49]

Answer:

Y=-1/2x+4

Step-by-step explanation:

-The slope is -1/2 so you just plug it in where the slope would go with an x in front

-all you need now is your y-intercept which can be found by plugging in the provided info to your basic form y=mx+b

-You can take the provided point at (10,-1) and work out what the intercepts is

-1=-1/2(10)-b

-1=-5-b

4=b

8 0

3 years ago