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Neko [114]
3 years ago
15

Enter the value for x that makes the equation 3x – 5 = 7x - 21 true.

Mathematics
2 answers:
Nitella [24]3 years ago
8 0

Answer:

4

Step-by-step explanation:

3x-5=7x-21

3x-7x=5-21

-4x=-16 ( divide by -4 both sides)

x= 4

AlexFokin [52]3 years ago
8 0
Answer:4


Step by step solution:

3x-5=7x-21
-5=4x-21
16=4x
x=4
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A rectangle has a length of 2 + 7 and a width of 3a + 8.
Juli2301 [7.4K]

Answer:

Step-by-step explanation:

2(2x+7+3x+8)

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3 years ago
Find the surface area of this rectangular prism: Don't forget to show the unit of measure.
Ann [662]

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete as the attachment of the prism is not given.

From the attachment:

L =10cm -- Length

W = 4cm -- Width

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Required

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3 years ago
Solve for x.<br> 9(x - 2) = 18<br> o x=0<br> X = 16/9<br> x = 20/9
iragen [17]

Answer:

x = 4

Step-by-step explanation:

9(x - 2) = 18

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5 0
3 years ago
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A car used 1/72 of a galloon of gas to drive 1/3 of a mile.At this rate,how many miles can the car travel using 1 galloon of gas
KiRa [710]

Answer:

24

Step-by-step explanation:

3 x 1/72 = 1 mile

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7 0
2 years ago
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olga2289 [7]

Answer:

12.5

Step-by-step explanation:

We can use ratios to solve

4        4+6

---- = ----------

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Using cross products

4 * AC = 5*10

4AC = 50

Divide by 4

AC = 50/4

AC =12.5

5 0
3 years ago
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