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4 years ago

PLZ ANWSER, find the area of the circle, plz tell me what we’re the steps u did I will mark brainest!!

Mathematics

2 answers:

never [62]4 years ago

7 0

Answer: 78.54

Step-by-step explanation:

Nikolay [14]4 years ago

3 0

Answer:

area= 25π (or 78.54)

Step-by-step explanation:

The formula for the area of a circle is area = πr².

So, we know our radius is 5 which we can then input into the formula:

area = π5²

Then, we can solve for the 5², which in other words, is just 5×5. That will equal 25, making our problem:

area = 25π

If you need to get rid of the π, then it's about:

area≈ 78.54.

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3 years ago

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3 years ago

the answer to this equation is negative 6 but I don’t know to explain how I got the answer is word form.

SpyIntel [72]

The value of k is –6.

Solution:

Given equation:

$$\frac{5 \cdot 5^{k}}{5^{-8}}=5^{3}$

To find the value of k:

$$\frac{5 \cdot 5^{k}}{5^{-8}}=5^{3}$

Using exponent rule: $a^m \cdot a^n = a^{m+n}$

$$\frac{5^{1+k}}{5^{-8}}=5^{3}$

Using exponent rule: $\frac{1}{a^{-m}} = a^{m}$

$$ 5^{1+k} \cdot 5^{8}=5^{3}$

Using exponent rule: $a^m \cdot a^n = a^{m+n}$

$$ 5^{1+k+8}=5^{3}$

$$ 5^{k+9}=5^{3}$

If the bases are same then, we can equate the powers of the bases.

i. e. If $a^m = a^n$ then m = n.

k + 9 = 3

Subtract 9 from both sides of the equation, we get

k = –6

Hence the value of k is –6.

8 0

4 years ago

Pls help me asap :((

cluponka [151]

Answer:

last one is correct

Step-by-step explanation:

kkk

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3 years ago

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2 years ago