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Mashcka [7]
3 years ago
6

What is the area of a circle with a radius of 2.1cm? Use 3.14 for π.

Mathematics
2 answers:
tester [92]3 years ago
8 0

Answer:

A= 13.8474

Step-by-step explanation:

The <u>formula for the area of a circle</u> is A= πr^2 <em>(pi times r, or radius, squared).</em>

So if you <u>insert the values into the formula</u> you have....

A= 3.14(2.1 cm)^2

You can use a <em>calculator</em> from there to get....

A= 13.8474

saul85 [17]3 years ago
3 0

Answer: I got's you lol

A≈13.85cm²

And the radius is 2.1

Step-by-step explanation:

Hope this helps let me know :)

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Can someone please help me with # 2 #13 thanks show work how it's done, please
zavuch27 [327]

Problem 13

10p+10q factors to 10(p+q). If we apply the distributive property, we can distribute the 10 to each term inside (p and q) to get

10(p+q) = (10 times p)+(10 times q) = 10*p + 10*q = 10p+10q

so we get the original expression again. Here 10 is the GCF of the two terms.

--------------------------------------------------------------

Plug p = 1 and q = 2 into the factored form

10*(p+q) = 10*(1+2) = 10*(3) = 30

As a check, let's plug those p,q values into the original expression

10*p+10*q = 10*1+10*2 = 10+20 = 30

We get the same output of 30

6 0
3 years ago
A line passes through (6, 3), (8, 4), and (n, -2). Find the value of n.
timurjin [86]

Answer:

n = -4

Step-by-step explanation:

Notice how in the previous examples they all divide by 2? It is the same case here. So now the question is... "what" divided by "2" is "-2".

Let me show you:

n ÷ 2 = -2

if you know your integer math, you should know that...

-4 ÷2 = -2 (this is the correct equation)

8 0
1 year ago
A patrolman spends 25% every day completing paperwork. The patrolman’s shift each day is 8 hours. How much of his time does he s
Mrrafil [7]

8 \times 25\% \\  = 8 \times  \dfrac{25}{100}  \\  = 2

Answer : He spends 2 hours doing paperwork each day.

Hope this helps. - M
4 0
4 years ago
What is the slope of the line shown?
sashaice [31]
The slope would be -1/3
3 0
3 years ago
Read 2 more answers
When 5x2+2=4x is solved using the quadratic formula, what are the values of a,b, and c?
viktelen [127]

Hey there,

<u>What </u><u>are </u><u>the </u><u>values </u><u>of </u><u>a,</u><u> </u><u>b </u><u>and </u><u>c?</u>

5x² + 2 = 4x

5x² + 2 - 4x = 4x - 4x

5x² - 4x+ 2 = 0

<em>Quadratic </em><em>général </em><em>e</em><em>quation</em><em>:</em>

ax² + bx + c = 0

  • a = 5
  • b = -4
  • c = 2

I hope this helps ✅(◠‿◕)

3 0
3 years ago
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