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stiv31 [10]
3 years ago
12

If a = 2b + 1, then in the terms of b, what is the value of 4a - 5?

Mathematics
1 answer:
AURORKA [14]3 years ago
5 0
4(2b+1) -5
8b+4-5
8b-1
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A glass of skim milk supplies 0.1 mg of iron, 8.5 g of protein, and 1 g of carbohydrates. A quarter pound of lean red meat provi
Tems11 [23]

Answer:

glasses of milk=4

quatar pounds servings of meat =5

two slices of whole grains bread =8

Step-by-step explanation:

Let m= milk

r=meat

b=bread

0.1m+3.4r+2.2b=35 (1)

8.5m+22r+10b=224 (2)

m+20r+12b=200 (3)

Multiply (1) by 85 and (2) by 1

8.5m+289r+187b=2,975 (4)

8.5m+22r+10b=224 (5)

Subtract (5) from (4)

267r+177b=2,751 (6)

Recall,

8.5m+22r+10b=224 (2)

m+20r+12b=200 (3)

Multiply (2) by 1 and (3) by 8.5

8.5m+22r+10b=224 (7)

8.5m+170r+102b=1700 (8)

Subtract (7) from (8)

148r+92b=1,476 (9)

Recall,

267r+177b=2,751 (6) and

148r+92b=1,476 (9)

Multiply (6) by 148 and (9) by 267

26196b=407,148 (10)

24564b=394,092 (11)

Subtract (11) from (10)

1,632b=13,056

Divide both sides by 1,632

b=13,056/1,632

b=8

Substitute the value of b in (9)

148r+92b=1,476 (9)

148r+92(8)=1,476

148r+736=1,476

148r=1,476-736

148r=740

Divide both sides by 148

r=740/148

r= 5

Substitute the value of b and r in (1)

0.1m+3.4r+2.2b=35 (1)

0.1m+3.4(5)+2.2(8)=35

0.1m+17+17.6=35

0.1m+34.6=35

0.1m=35-34.6

0.1m=0.4

Divide both sides by 0.1

m=0.4/0.1

m=4

4 glasses of milk, 5 quatar pounds servings of meat and 8 two slices of whole grains bread will supply the required nutrients.

8 0
3 years ago
5a +4b+c-3a-c+4b simplified
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Answer:

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Step-by-step explanation:

4 0
3 years ago
Who should fill out the W-2 form?
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The answer would be A. I hope this helps you 

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3 years ago
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If a woman making $35,000 a year receives a cost-of-living increase of 2.1%, what will her new
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Answer:

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Step-by-step explanation:

Step 1:

35000 + 0.021(35000)

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Paul wrote a check to the dentist for $345.69. He’ll use the check register to record his transaction. What will be his new bala
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Answer:

$704.73

Step-by-step explanation:

Take the original amount of money in the account minus $345.69 for the dentist.

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$796.31 - $15.89 = $780.42

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$780.42 - $75.69 = $704.73

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3 years ago
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