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lutik1710 [3]
3 years ago
12

Do not give me any types of links.

Mathematics
1 answer:
jonny [76]3 years ago
3 0

Answer:

B. 100 pi units squared

Step-by-step explanation:

Find the surface area of a sphere with radius 5 using the formula SA=4pir²

Leave answer in terms of π = pi

From the question

The formula for the Surface Area if a square = 4 × pi × r²

r = 5

Hence,

Surface Area of a Sphere = 4 × pi × 5²

= 100 pi units squared

Option B is the correct option

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An equation and the first step in its solution are shown: Equation: x2 + 8x - 9 = 0
Novay_Z [31]
Answer- A-16

Because when doing completing the square, you divide the coefficient of x by 2, which is 4, and the square it which is 16
3 0
3 years ago
Binh has to write an 8-page report. If he has written 3/4 of his report so far, how many pages has he written?
Eva8 [605]

Answer:

6 pages

Step-by-step explanation:

3/4 = 8 = 2 = 1/2 = 3/4 / 8 = 6

This is confusing to understand but that's how I solved it.

4 0
3 years ago
What are the possible lengths for x, the third side of a triangle, if two sides are 21 and 10
SashulF [63]
To solve we need to use Pythagoras theorem ( a^{2} +  b^{2} =  c^{2} )

There are 2 possible lengths for x: hypotenuse or one of the 2 shorter sides.

Hypotenuse:
10^{2} + 21^2 = x^{2}
100+441= x^{2}
\sqrt{541} =  \sqrt{ x^{2} }
23.3≈x

Shorter leg:
10^2 + x^2=21^2
x^2= 21^2-10^2
x^{2}= 441-100 
\sqrt{ x^{2} } = \sqrt{341}
x≈18.47
8 0
3 years ago
What's the solution to<br> 1/5+1/3x&gt;1/2-1/4?
Serjik [45]

Answer:

x> 3/20

Step-by-step explanation:

Let's solve your inequality step-by-step.

1 /5  +  1 /3  x>  1 /2  −  1 /4

Step 1: Simplify both sides of the inequality.

1 /3 x+  1 /5  >  1 /4

Step 2: Subtract 1/5 from both sides.

1 /3 x+  1/ 5  −  1 /5  >  1 /4  −  1 /5  1 /3  x>  1 /20

Step 3: Multiply both sides by 3.

3*( 1 /3 x)>3*( 1 /20 ) x> 3 /20

Answer:

x>  3/ 20

Hope this helps!!

6 0
4 years ago
the number y of calories burned after x hours of rock climbing is represented by the linear function y=650x find the domain , is
Flauer [41]

Answer:

The domain is discrete

Step-by-step explanation:

Given

y = 650x

Required

What type of domain is it?

<em>Based on the given options, the domain is continuous.</em>

From the question, we understand that x represents the hours spent in climbing the rock.

The climber can decide to climb for 1 hour, 2 hours, ½ hour, ⅓ hour, ¼ hour, etc..

A domain is said to be discrete if it can only take integers (i.e. whole numbers), if otherwise, it is continuous;

So, since x is not limited to only whole numbers, then we can conclude that the domain of x is continuous

3 0
3 years ago
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