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Dmitrij [34]
3 years ago
8

What is the surface area of a sphere that has a radius of 5 units? Use 3.14 for π. A. 254 units2 B. 300 units2 C. 314 units2 D.

384 units2
Mathematics
2 answers:
frez [133]3 years ago
8 0

Answer:

the answer is C

Step-by-step explanation:

VladimirAG [237]3 years ago
3 0

Answer:

C. 314 units2

Step-by-step explanation:

Sphere Formula:

SA=4πr²

SA= 4×3.14×5²= 314 units2

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How to find third coordinate when given midpoint and a point?
IgorLugansk [536]
Example : 
u have an endpoint at (6,5)......ad the midpoint is (4,2)....find the other endpoint.

midpoint formula : (x1 + x2) / 2, (y1 + y2) / 2
one endpoint (6,5)....x1 = 6 and y1 = 5
other endpoint (x,y)...x2 = x and y2 = y
sub into the formula
m = (6 + x) / 2, (5 + y) / 2

okay, so the midpoint is (4,2)....so ur x value will equal 4
(6 + x) / 2 = 4...multiply both sides by 2
6 + x = 4 * 2
6 + x = 8
x = 8 - 6
x = 2 <==

midpoint is (4,2)....so the y value will equal 2
(5 + y) / 2 = 2 ...multiply both sides by 2
5 + y = 2 * 2
5 + y = 4
y = 4 - 5
y = -1 <==

so ur other endpoints are (2,-1)
8 0
3 years ago
Liam has 25 oranges, 15 peaches and 35 pears to make fruit baskets for 1 point
OleMash [197]

you want me to do step by step or just tell you the answer?

Step-by-step explanation:

3 0
2 years ago
12y+15=24-6y ??????????????????
lyudmila [28]

Answer:y=1/2

Step-by-step explanation:

7 0
3 years ago
What is the equation of the line which
natka813 [3]

Answer:

The equation of the line is y = (-1/2)x + 5

Step-by-step explanation:

m =  \frac{y2 - y1}{x2 - x1 }

First of all, have to find gradient using the formula above :

(2,4) & (14,-2)

m = (-2-4) / (14-2)

= -6 / 12

= -1/2

Second, using y = mx + b as b is a constant and is a y-intercept. Using any of these 2 coordinates to find the value of b with given gradient :

y = mx + b

Let y=4 & x=2

4 = (-1/2)(2) + b

b = 4 + 1

= 5

Lastly, put the value of gradient and y-intercept into the equation :

y = mx + b

Let m=-1/2 & b=5

y = (-1/2)x + 5

5 0
3 years ago
Which expression is equivalent to 12X + 4X +20?
BabaBlast [244]

Answer:

12x + 4x + 20

4(3x + x + 5)

4(4x+5)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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