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Lisa [10]
3 years ago
6

If HJ=7x-27, find the value of x

Mathematics
1 answer:
bogdanovich [222]3 years ago
3 0

Answer:

x= HJ+27/7

Step-by-step explanation:

HJ + 27 = 7x

HJ+27/7 = x

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An item that originally cost $100 is decreased by 8%. The reduced price is then increased by 8%.
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First, find the decreased price by multiplying 100 by 8% and subtracting:

100 x 0.08 = 8

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now multiply reduced price by 8% and add:

92 x 0.08 = 7.36

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Solve for x.
Ivanshal [37]

Answer:

x = -3.25

Step-by-step explanation:

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Convert to fraction

2/5x - 1/5 = -6/4

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2/5x = -26/20

Convert to decimal

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8 0
2 years ago
At a bake sale, as student spent $11.00 buying 3 brownies and 5 cookies. His friend spent $3.95 buying 1 brownie and 2 cookies.
dybincka [34]

Answer:

$2.25

Step-by-step explanation:

Let "b" be the price of 1 brownie and "c" the price of 1 cookie.

At a bake sale, a student spent $11.00 buying 3 brownies and 5 cookies. Symbolicaly,

3 b + 5 c = 11.00   [1]

His friend spent $3.95 buying 1 brownie and 2 cookies. Symbolicaly,

1 b + 2 c = 3.95

b = 3.95 - 2c   [2]

If we replace [2] in [1], we get

3 (3.95 - 2c) + 5 c = 11.00

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c = 0.85

If we replace c = 0.85 in [2], we get

b = 3.95 - 2 (0.85) = 2.25

8 0
3 years ago
What is the value of x?
kari74 [83]

Answer:

4

Step-by-step explanation:

I took the quiz, here's proof

4 0
3 years ago
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