2 years ago

The sum of twice a number and 4 is equal to the sum of the number and 7

Mathematics

2 answers:

Naily [24]2 years ago

7 0

Answer:

2n+4=n+7

Step-by-step explanation:

n=-3

icang [17]2 years ago

7 0

The answer would be 3.

2x + 4 = x + 7

Move the terms around so you could simplify like terms.

X = 3

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The width of a rectangle is 8y- 1.5 feet and the length is 1.5y+9 feet. Find the perimeter of the rectangle.

lyudmila [28]

Answer:

$P=19y+15$

Step-by-step explanation:

Step one:

Given data

dimension of the rectangle

Width = 8y-1.5

Length = 1.5y+9

Required

The expression to represents the Perimeter

Step two:

the perimeter of a rectangle is expressed as

$P= 2L+2W\\\\P=2(1.5y+9)+2(8y-1.5)\\\\P=3y+18+16y-3\\\\$

collect like terms

$P=3y+16y+18-3\\\\P=19y+15$

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2 years ago

Written as a simplified polynomial in standard form, what is the result when (3x-1)^2 is subtracted from 4?

nikklg [1K]

Answer:

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Step-by-step explanation:

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2 years ago

Which of the following sets shows all the numbers from the set {1, 2.5, 3, 4.5, 5} that make the inequality 3a + 4 ≥ 13 true?

zmey [24]

3(1)+4≥ 13
7≥ 13
No

3(2.5)+4≥ 13
11.5≥ 13
No

3(3)+4≥ 13
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Yes

{3, 4.5, 5}

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3 years ago

Read 2 more answers

Eight kids got to go to the water park for $60.How many students could go for $195?

Stella [2.4K]

60/8=7.5
So that means one child is $7.50
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26 students

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3 years ago

What is the solution set for the open sentence with the given replacement set y2 -3=y+ [0,1,3,4]

stich3 [128]

It is three cuz when replace with three it is all equal:
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please rate as brainliest and hope this helps :)

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2 years ago