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3 years ago

What is the surface area of the sphere

Mathematics

1 answer:

belka [17]3 years ago

5 0

To solve for surface area of a sphere, the formula is 4*pi*r^2 where "r" is the radius. Since we know the diameter and that it is the length across the sphere, and that the radius is the distance from the center to the edge, we can divide the diameter by 2 to get the radius. This shows the radius is 5. Now all we have to do is substitute in the 5 for the "r" and solve.

SA=4*pi*r^2
SA=4*pi*5^2
SA=314.159

We are rounding to the hundredth here, so we can say the surface area of the sphere is (A) approximately 314.16 square miles.

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Y = x + 5<br> y = -2x - 4<br>what are the y and x values please

Maksim231197 [3]

Answer:

x=-3, and y=2

Step-by-step explanation:

Since both equations are equal to y, set them equal to each other and solve for x, that way you can solve for y:

x+5=-2x-4

3x+5=-4

3x=-9

x=-3

Plugging in x=-3 into one of the original equations:

y = x + 5

y = -3 + 5

y = 2

Therefore, x=-3 and y=2. You can also write as the ordered pair (-3,2) since that's where the two equations would intercept on a graph.

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3 years ago

The function F(c)=log0.5x is decreasing true or false

nikitadnepr [17]

Answer:

true

Step-by-step explanation:

We assume you intend your function to be ...

$F(x)=\log_{0.5}x$

A logarithm with a base less than 1 is a decreasing curve. Here, the base appears to be 0.5, a value less than 1. Hence the curve is decreasing.

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3 years ago

Eric owns and operates the hot food truck.The expression 3.25b+2h gives the cost of burgers and h hot dogs.What is the cost of 4

Nat2105 [25]

3.25(4)+2(6) --plug in values
13+12 --multiply
$25 --answer

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3 years ago

Points F (0,0), G (9,0) and H (9,12) of vertical triangle

ludmilkaskok [199]

Answer:

15 is the distance

Step-by-step explanation:

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3 years ago

Evaluate 9÷3[(20-7)-2^2]

german

Answer:

Step-by-step explanation:

You will have to use the PEMDAS rule here. so Parntheses goes first, then exponents, then mutiplicaton or division, and finally addition or subtraction.

20-7= 13

-2^2 = (-2 * -2) = 4

9/3 = 3

so... 13*3 = 39+4 =43

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3 years ago