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Ulleksa [173]
3 years ago
5

please help- apex learning is hard, fr, fr. Question 2 of 5 Evaluate -(5-4)(52). A. 1 B. 2 C. 25 D. -25​

Mathematics
1 answer:
Pie3 years ago
8 0

Answer:

Step-by-step explanation:

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The numbers of blue, red, green and black pencils are proportional to the numbers 2, 3, 5, and 7, respectively. If we add the nu
Vitek1552 [10]

Answer:

  20 green pencils

Step-by-step explanation:

The difference between black and green "ratio units" is 7 -5 = 2. The difference between red and blue ratio units is 3 -2 = 1. The sum of those differences is 2 +1 = 3 ratio units, which represent 12 pencils. Then each ratio unit represents 12/3 = 4 pencils.

The 5 ratio units of green pencils represent 5·4 pencils = 20 green pencils.

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If you need an equation, you can use k as the constant of proportionality. Then the sum of differences described is ...

  (7k -5k) + (3k -2k) = 12

  3k = 12 . . . . simplify

  k = 4 . . . . . . divide by 3

  5k = 5·4 = 20 . . . . . number of green pencils

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3 years ago
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What is 2/5 divided 1/3
Natalka [10]

Answer:

1.33

Step-by-step explanation:

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2 years ago
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How i can answer this question, NO LINKS, if you answer correctly i will give u brainliest!
gavmur [86]

Answer: A. they will have too much butter

Step-by-step explanation: to much

6 0
2 years ago
Jack read 9 books in 15 months. What was his rate of reading in months per book? Include units.
sladkih [1.3K]

Answer:

3/5 books

Step-by-step explanation:

Divide 9 by 15 to get 0.6

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7 0
2 years ago
6x+7y=5<br>2×-3y=7<br><img src="https://tex.z-dn.net/?f=6%20%5Ctimes%20%20%2B%207y%20%3D%205%20%5C%5C%202%20%5Ctimes%20%20-%203y
svetoff [14.1K]

Answer:

x=2; y=-1

Step-by-step explanation:

Hello,

(1) 6x+7y=5

(2) 2x-3y=7

We multiply equation (2) by 3, it gives

6x-9y=21 and we subtract from (1)

6x-9y-6x-7y=-16y=21-5=16

So y = -1

we replace in (1) 6x-7=5 <=> 6x=7+5=12 <=> x =12/6=2

thanks

8 0
2 years ago
Read 2 more answers
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