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Kryger [21]
3 years ago
11

Need help! I will Mark you braniest who ever gets it right !

Mathematics
2 answers:
Andru [333]3 years ago
6 0

Answer:

A. -30

B. 16

Step-by-step explanation:

Simply plug in the values into the equation. f(-2) evaluates to -7, and f(2) evaluates to -23. Thus, A is -7+(-23) = 30, and B is -7 - (-23) = 16

Snezhnost [94]3 years ago
6 0
The first one is 0 and the second one is -4f
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16. Peter works part time for 3 hours every day and Cindy works part time for 2 hours every day.
Ber [7]

Answer:

Part A)

  • 4.50 × 3 > 4.50 × 2
  • 13.5 0 > 9

Part B)

  • r ≥ 7

Explanation:

1) The earnings are calculated multiplying the number of hours by the hourly rate.

2) The hourly rate of both Peter and Cindy is the same: $ 4.50 / hour

3) Let the variable used for computing the number of hours be h.

4) The number of hours Peter works every day is 3 hours, so, using the letter P to name Peter's earnings, the expression to calculate his earnings is:

  • P = 4.50 × 3

5) Similarly, the expression to calculate Cindy's earnings would be:

  • C = 4.50 × 2

<u>Answering part A)</u>

<u>Y</u>ou have to write an inequality to compare Peter's and Cindy's earnings:

  • 4.50 × 3 > 4.50 × 2
  • 13.5 0 > 9

This is, the earnings of Peter are greater than the earnings of Cindy.

<u>Part B)</u>,

You have to write an inequality to calculate Cindy's per-hour income so that she earns at least $ 14 a day.

  • Here, C ≥ 14, because the sign ≥ means greater than or equal to, meaning the the earnings are greater than or equal to 14.

  • Thus, since she works 2 hours per day, the inequality becomes 2 × r ≥ $ 14, where r is the per-hour income.

  • To solve it follow these steps:

Given: 2r ≥ 14

Divide both sides by 2: r ≥ 14 / 2

Simplify: r ≥ 7

That means that Cindy's per-hour income should be at least $7 and hour so that she earns $14 a day.

7 0
3 years ago
Select all the equivalent ratios of 8:12... 7:21 20:30 5:15 2:3 16:24 and 1:3
Bond [772]

8:12 is 2/3 and so is 16:24, 2:3, and 20:30

Step-by-step explanation:

For example (includes simplified problem solving),

8 ÷ 4 = 2

12 ÷ 4 =3

You would want to divide the numerator and denominator by the greatest common factor (GCF)

The ratio 8:12 can be reduced to its lowest terms by dividing both terms by the GCF

Therefore 8:12 is 2:3

4 0
3 years ago
If Jenner has 5 dollars and spends 5 dollars how much does she have now
Harrizon [31]
She has zero dollars
8 0
4 years ago
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Find the square root of the following by prime factorization method.
weeeeeb [17]

Answer:

\boxed{=65}\\

Step-by-step explanation:

\begin{array} {c|c}4225&5\\845&5\\169&13\\13&13\\1\\\end{array}\\\\\\4225=5^2*13^2\\\\\sqrt{4225} \\\\=5^{\frac{2}{2} }*13^{\frac{2}{2} }\\\\=5*13\\\\\boxed{=65}\\

8 0
3 years ago
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HELP it’s ASAP need to get this done!!
Ad libitum [116K]

Answer:

384

Step-by-step explanation:

32 times 12 is 384

please mark as brainliest!!

5 0
3 years ago
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