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LenKa [72]
3 years ago
15

Explain two ways you could solve 20 = 5(−3 + x

Mathematics
2 answers:
emmasim [6.3K]3 years ago
7 0

Answer:

7 is x

Step-by-step explanation:

1) Divide both sides by 5 to give

4=-3+x

x=4+3

x=7

2) Multiply 5 with the RHS (Right Hand Side) to give

20=-15+5x

20+15=5x

35=5x

x=7

ruslelena [56]3 years ago
3 0

I hoped this helped! Sorry about my messy handwriting!!!

Step-by-step explanation:

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3 years ago
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dalvyx [7]

Answer:

Step-by-step explanation:

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4 0
3 years ago
A rectangle has a perimeter of 12 centimeters and a height of 5 centimeters. What is the length of the base?
Gwar [14]

Answer:

1 cm

Step-by-step explanation:

We know that the formula for perimeter is<u> 2(l+w) or l+l+w+w</u>

We know that the height is 5 cm so that means <em><u>w= 5</u></em> also that there is 5 cm on both sides of the rectangle. So 5+5=10 so that means that the length of the rectangle is <em><u>1 cm</u></em> if you add the length together you 2 when you add the width you get 10. <em>10+2=12.</em>

5 0
3 years ago
A savings account earns 6% simple interest per year. The principal is $800. What is the balance after 18 months?
Ilia_Sergeevich [38]

Answer:

$872

Step-by-step explanation:

Simple interest = Principle * Rate * Time / 100

= ( 800 * 6 * 18/12 ) / 100

= $ 72

The balance after 18 months = principle + interest

= 800 + 72

= $ 872

8 0
2 years ago
What is the solution set of 12x^2-9x=0??
netineya [11]
12x²-9x = 0
3x(4x-3)=0
4x-3=0
4x=3
x=3/4
so either x = 0  or x = 3/4
6 0
3 years ago
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