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labwork [276]
3 years ago
12

Solve the following system of equations: 2x - y = 7

Mathematics
1 answer:
wlad13 [49]3 years ago
5 0

Answer:

Step-by-step explanation: Not too sure how to explain it this is how you simplify it pretty sure

2x-y=7

+2x    +2x add to both sides to get y alone because it has no friends

___________

-y=7+2x get rid of the negative on the y value

__________

y= -2x -7

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a drink is made by mixing pineapple juice orange juice and lime juice in the ratio 2:7:3 Sally makes 600ml of the fruit drink ho
satela [25.4K]
Pineapple juice : orange juice : lime juice = 2:7:3
So there is 2x of pineapple juice, 7x of orange juice and 3x of lime juice.

2x+7x+3x=600 \\
12x=600 \\
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She used 100 ml of pineapple juice.
7 0
3 years ago
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The perimeter of a rectangle is 42 inches. If the width of the rectangle is 8 inches, what is the length?
sergiy2304 [10]

perimeter = 2W + 2L

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3 years ago
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timurjin [86]

36.864 cubic units is what the answer is

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3 years ago
Misaki cut some wood for a bookcase she is building.She needs to find how many 1
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Answer:

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6 0
3 years ago
In the number 15.2201 how does the value of 2 in the tenths place compare to the value of the 2 in the hundredths place
lakkis [162]

Answer:

The 2 in the hundreths is 10% of the 2 in the tenths

Step-by-step explanation:

We are given the number 15.2201

#The value of 2 in the tenths:

0.2

#The value of 2 in the hundredths:

0.02

The difference of the 2 in the tenths and in the hundredths is:

=2_t-2_h\\\\=0.2-0.02\\\\=0.18\\\\\#2_h \ as \ a \ \% \ of \ 2_t\\=\frac{2_h}{2_t}\times 100\%\\\\=\frac{0.02}{0.2}\times100\%\\\\2_h=10\% \ of\  2_t

Hence, the difference between the 2 in the tenths  minus 2 in the hundreths is 0.18, 2 in the hundreths is 10% the 2 in the tenths.

6 0
3 years ago
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