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nydimaria [60]
3 years ago
10

What value of X makes this equation true?

Mathematics
2 answers:
Studentka2010 [4]3 years ago
6 0

Answer:

The answer is B

Step-by-step explanation:

-53=8x+5

First you would subtract the 5 on both sides then you would end up with

-58=8x

then you would divide both sides by 8 and get 7.25 or 7 1/4

evablogger [386]3 years ago
3 0

Answer:

-7 1/4

Step-by-step explanation:

-53=8x+5. Collect like terms

-53-5=8x

-58=8x divide both side by 8

x= - 7.25 or - 7 2/8 or -7 2/4

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What is the value of the expression –5x4 when x = –2?
igomit [66]
It is definitely c, 80
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3 years ago
1. The heights of two right prisms
RoseWind [281]

Answer:

They are not similar

Step-by-step explanation:

To determine whether the prism are similar we need to calculate their volumes

Volume of a prism = Base Area * Height

Volume of the first prism = 18ft *8 * 8ft

Volume of the first prism = 1152ft^2

Volume of the second prism = 30t * 15 * 15ft

Volume of the second prism = 6,750ft^2

Since the volumes are different, the prism are not similar.

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3 years ago
Twice the sum of consecutive numbers n and n + 1 is 510. What is the smaller number?
guajiro [1.7K]

Answer:

The smaller number is 127

Step-by-step explanation:

Lets write the given problem in equation form

sum of consecutive numbers n and n + 1 = n + n + 1 = 2n + 1

now we find twice of the sum of consecutive numbers n and n + 1

2*(2n + 1) = 4n + 2

given that

twice the sum of consecutive numbers n and n + 1 is 510

thus,

4n + 2 = 510

=> 4n = 510 -2 = 508

=> n = 508/4 = 127

Thus, the numbers are n = 127

n+1 = 127 + 1 = 128

the smaller number is 127

4 0
3 years ago
What is the value of x in the equation x - ty = 30, when y = 15?
Ostrovityanka [42]
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7 0
3 years ago
Read 2 more answers
Solve the following equation for N<br><br> 1/5 (N+3)+4=3/10 (2N-2)<br><br><br> n = ________
postnew [5]

Answer:

n = 13

Step-by-step explanation:

1/5(n + 3) + 4 = 3/10(2n - 2)

~Simplify both sides

1/5n + 3/5 + 4 = 3/5n - 3/5

~Combine like terms

1/5n + 23/5 = 3/5n - 3/5

~Subtract 23/5 to both sides

1/5n = 3/5n - 26/5

~Multiply 5 to both sides

n = 3n - 26

~Subtract 3n to both sides

-2n = -26

~Divide -2 to both sides

n = 13

Best of Luck!

8 0
4 years ago
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