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2 years ago

Just pick the right answer , that all u have to do. <3

Mathematics

1 answer:

Semmy [17]2 years ago

7 0

The right answer is the top right. 28 students chose the zoo. The 28 + 23 is the sum of the total people surveyed. Multiply it by 100 to get a percentage.

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7b + 3 – 4b = 3 – 3(b + 4)

svlad2 [7]

Hello from MrBillDoesMath!

Answer: b

Discussion:

7b + 3 - 4b = 3 - 3(b+4) =>

7b + 3 - 4b = 3 - 3b -12 =>

(7b - 4b) + 3 = -3b - 9 =>

3b + 3 = -3b -9 => Add 9 to both sides

3b + 12 = -3b -9 + 9 =>

3b + 12 = -3b => ( add 3b to both sides)

6b + 12 = 0 => (subtract 12 from both sides)

6b = -12 =>

b = -12/6 = -2

Thank you,

MrB

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2 years ago

If y varies inversely with the square of r, what is the constant of proportionality when y - 10 and 1 = 5?

Anvisha [2.4K]

Question:

If y varies inversely with the square of r, what is the constant of proportionality when y =10 and r = 5?

Answer:

The constant of proportionality is 250

Solution:

Given that,

y varies inversely with the square of r

Which means,

$y \propto \frac{1}{r^2}\\\\y = k \times \frac{1}{r^2}$

Where, "k" is constant of proportionality

Subtitute y = 10 and r = 5

$10 = k \times \frac{1}{5^2}\\\\10 = k \times \frac{1}{25}\\\\k = 10 \times 25\\\\k = 250$

Thus the constant of proportionality is 250

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2 years ago

PLEASE HELP! WILL MARK BRAINLIEST!

AfilCa [17]

Number 3 is the correct answer

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3 years ago

Please I need help.

soldi70 [24.7K]

Answer: A

Step-by-step explanation: if not A then B if not B then C if not C then D if not D then your teacher doesn't like you.

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2 years ago

Which fraction is bigger? 13/20 or 5/8

VARVARA [1.3K]

13/20 because it is 6.5 vs 5/8 being 6.25

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3 years ago

Read 2 more answers