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Natalija [7]
2 years ago
8

3. What is the value of a + bc when a = 7, b = 4, and c = 1/2

Mathematics
1 answer:
Brums [2.3K]2 years ago
3 0

Answer:

9

Step-by-step explanation:

Replace a by 7

and

b by 4

and

c by 1/2

7+4(1/2)

7+2=9

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What is the coefficient of the term ​ 6/7xy (a fraction) ​?
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Answer:

6/7

Step-by-step explanation:

The coefficient is <u>the number right in front of the variable</u>, so in this problem, the coefficient is 6/7.

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3 years ago
Round the following numbers to the nearest 1000
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Answer:

A. 5000 B: 12000 C 57000

Step-by-step explanation:

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Draw and label a tape diagram to subtract 10, 20, 30
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3 years ago
a chef is going to use a mixture of two brands of Italian dressing. The first brand contains 5% vinegar and the second Brian con
tankabanditka [31]

Answer:

  • 273 mL of 5%
  • 117 mL of 15%

Step-by-step explanation:

Let q represent the quantity of 15% dressing used. Then the amount of 5% dressing is (390 -q). The amount of vinegar in the mix is ...

  0.15q + 0.05(390 -q) = 0.08(390)

  0.10q = 31.2 -19.5 = 11.7 . . . . . . subtract 0.05(390) and simplify

  q = 117 . . . . . . . . . . . . . . . . . . multiply by 10

  390-q = 273

The chef should use 273 mL of the first brand (5% vinegar) and 117 mL of the second brand (15% vinegar).

__

<em>Additional comment</em>

You may have noticed that the value of q is (0.08 -0.05)/(0.10 -0.05)×390. The fraction of the mix that is the highest contributor is the ratio of the difference between the mix value and least contributor, divided by the difference between the contributors: (8-5)/(15-5) = 3/10, the fraction that is 15% vinegar. This is the generic solution to mixture problems.

7 0
3 years ago
A car traveling 118 miles uses 4 gallons of gas. At this rate, how many miles can it travel using 13 gallons of gas
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Answer:

12 miles per gallon

Step-by-step explanation:

I hope this helps

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3 years ago
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