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3 years ago

14

What is the best first step in solving the equation 3x2 + 8x = -5?

1 answer:

Rashid [163]3 years ago

5 0

I would assume it would be dividing both sides by three although if someone were to actually solve this I would say multiply 2 and 3 together first.

Hope this helps :)

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Which expression is equivalent to 3√50 × √22 ?

8_murik_8 [283]

$\longrightarrow{\green{C.\:30 \sqrt{11} }}$ ✔

$\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}$

$3 \sqrt{50} \times \sqrt{22} \\ \\ = 3 \sqrt{50 \times 22} \\ \\ = 3 \sqrt{1100} \\ \\ = 3 \sqrt{2 \times 2 \times 5 \times 5 \times 11} \\ \\ = 3 \sqrt{ {2}^{2} \times {5}^{2} \times 11} \\ \\ = 3 \times 2 \times 5 \sqrt{11} \\\\ = 30 \sqrt{11}$

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3 years ago

The radius of a circle is 3 inches . What is the circumference of the circle ?

Vlada [557]

Answer:

Option C

Step-by-step explanation:

Circumference of a circle is:

$C=2\pi r$

r - radius

We are given the radius of 3 inches.

$C=2\pi r\\\\C=2(3)\pi \\\\C=\boxed{6\pi }$

Option C should be the correct answer.

Hope this helps!

3 0

3 years ago

Students in a school were asked to collect old bottles as part of a recycling drive. Some of the data recorded at the drive is s

Len [333]

Answer:

A. The number of students who collected exactly 2 bottles.

Step-by-step explanation: I got this question on my test, and the answer was A.

100% verified! :D

5 0

3 years ago

Read 2 more answers

If f(x) = 2x + 3, what is f(–2)?

Mumz [18]

Substitute -2 for x

$f( - 2) = 2( - 2) + 3 \\ y = - 4 + 3 \\ y = - 1$

Hope it helps

Please give brainliest

7 0

2 years ago

Read 2 more answers

If 10 men earns rs 180 in 18 days for 6 working hours a day. how much will 15 men earns in 24 days for 8 working hours a day?

SCORPION-xisa [38]

To complete the work in 18 days 10 men work 6 hours day

To complete the work in 18 days 1 man work (10 x 6) hours a day

To complete the work in day 1 man will work (6 x 10 x 18) hours in a day (less days, less men, more hours)

To complete the work in 1 day 15 men will work 15(6×10×18) hours a day

∴ To complete the work in 12 days 15 men will work 12×156×10×18 hours a day

(more days, more men, less hours) = 6 hours a day

3 0

2 years ago