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stiv31 [10]
3 years ago
10

What is 5x-(3+7)=9+2(x-8)

Mathematics
2 answers:
raketka [301]3 years ago
3 0
5x-3-7=9+2x-16
5x-10=2x-7
5x-2x=-7+10
3x=3
X=1
masya89 [10]3 years ago
3 0

Answer:

x= 1

Step-by-step explanation:

5x - (3+7)=9+2(x-8)

Add the numbers 3 + 7= 10

5x - 10= 9 + 2(x-8)

Expand 9 + 2(x-8): 2x - 7

5x - 10 = 2x - 7

Add 10 to both sides

5x -10 + 10 = 2x -7 + 10

Simplify 5x = 2x + 3

Subtract 2x from both sides

5x -2x = 2x + 3- 2x

Simplify

3x = 3

Divide both sides by 3

3x/3 =3/3

Simplify

x= 1

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Ms Thomas drove at a constant rate for 45. She drove 39 miles during that time. If distance is determined by the equation d=rt w
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Answer:

Ms. Thomas was driving at constant rate of 52 miles/hour.

Step-by-step explanation:

Given:

Total time to travel (t) = 45 minutes

Distance drove (d) = 39 miles

we need to find the constant rate in miles per hour at which she was driving.

Solution:

Now we know that;

We need to find constant rate at miles per hour;

But time is given in minutes.

So we will convert minutes into hour by dividing by 60 we get;

time t =\frac{45}{60}= 0.75\ hrs

Now we know that;

Distance is equal to rate times time.

framing in equation form we get;

distance d =rt

Or

rate r= \frac{d}{t} = \frac{39}{0.75}= 52 \ mi/hr

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6 0
3 years ago
Kate sold a sailboat at a loss of 20%. If the selling price was $64, what was the original cost?
lapo4ka [179]

So she lost 20% of the original selling price.

$64 is 80% of the original price.

64/80=0.8

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8 0
3 years ago
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A movie theater is giving away a souvenir poster to any customer with a concession stand receipt that exceeds $60. The
Doss [256]

Answer:

6x + 3.5y  is greater than 60

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3 years ago
7.) x-3>4 please help
givi [52]

Answer:

x>7

Step-by-step explanation:

x-3>4

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3 years ago
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