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3 years ago

Factor completely x2 − 49. (1 point) (x − 7)(x − 7) (x + 7)(x − 7) (x + 7)(x + 7) Prime

Mathematics

1 answer:

Sever21 [200]3 years ago

8 0

Answer:

(x + 7)(x - 7)

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Find the area of circle having 176cm circumference.With step by step explanation.plz

Olin [163]

Answer:

$\huge\boxed{A=784\pi\ cm^2\approx2464\ cm^2}$

Step-by-step explanation:

The formula of a circumference of a circle:

$C=2\pi r$

r - radius

The formula of an area of a circle:

$A=\pi r^2$

r - radius

We have C = 176cm. Substitute to the formula and calculate the radius r:

$2\pi r=176\qquad|\text{divide both sides by}\ 2\pi\\\\r=\dfrac{176}{2\pi}\\\\r=\dfrac{88}{\pi}\qquad|\text{use}\ \pi\approx\dfrac{22}{7}\\\\r=\dfrac{88}{\frac{22}{7}}\\\\r=88\cdot\dfrac{7}{22}\\\\r=4\cdot7\\\\\boxed{r=28(cm)}$

Calculate the area:

$A=\pi\cdot28^2=784\pi\approx784\cdot\dfrac{22}{7}=112\cdot22=2464(cm^2)$

According to the moderator, I should take $\pi\approx3.14$ . You can do it like that. In my opinion, my solution is correct.

6 0

3 years ago

A banquet room can seat a maximum of 69 people. The coach,

nata0808 [166]

Answer:

each student can bring atleast 1 but some can bring 2

Step-by-step explanation:

7 0

3 years ago

What is the mean absolute deviation of the following set of data 12 10 12 6 8 4 2 12

mojhsa [17]

Answer:

The mean is 8.3.

Step-by-step explanation:

4 0

3 years ago

Need help ASAP! Giving Brainliest!

allsm [11]

ok thats cool ig what do you need help with

4 0

3 years ago

Read 2 more answers

Help me -2 (8 - e) = 2 - e

-BARSIC- [3]

Answer:

e = 6

Step-by-step explanation:

Step 1: Write equation

-2(8 - e) = 2 - e

Step 2: Solve for e

Distribute -2: -16 + 2e = 2 - e
Add e to both sides: -16 + 3e = 2
Add 16 to both sides: 3e = 18
Divide both sides by 3: e = 6

Step 3: Check

Plug in e to verify it's a solution.

-2(8 - 6) = 2 - 6

-2(2) = -4

-4 = -4

3 0

3 years ago