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Goryan [66]
2 years ago
12

If you have the equations 2x + 3y = 18 and y = 2x + 12 and use the substitution method to solve, what would be the value of x? A

NSWER FAST!!!
Mathematics
1 answer:
Alex Ar [27]2 years ago
3 0

Answer:

x= -2.25

Step-by-step explanation:

2x+3(2x+12)=18

2x+6x+36=18

8x+36=18

8x= -18

x= -9/4= -2.25

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Bob spends 30 hours in 4 weeks of gardening. How many hours does he garden in 5 weeks
Mademuasel [1]

Answer:

37.5 hrs

Step-by-step explanation:

You do cross multiplication hours on top and weeks on the bottom.

4 0
3 years ago
Four times a number added to 7 times the number equals 44.
zysi [14]
If you're looking for the value of the number, then here's how:
Let's call the number x
4x + 7x = 44
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÷ 11
x = 4
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8 0
3 years ago
If a car travels 792 feet in 12 seconds what is the speed of the car in miles per hour?
UkoKoshka [18]

Answer:

Step-by-step explanation:

1 mile contains 5280 feet

x mile contains 792 feet             Cross Multiply

5280 x = 792                               Divide by 5280

x = 792 / 5280

x = 0.15 miles

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Distance travelled in 12 sec = 0.15 miles

                                 3600 sec = x                       Cross Multiply

12x = 3600  * 0.15                                                  Combine

12x =  540                                                               Divide both sides by 12

12x/12 = 540/12

x = 45 miles / hour

6 0
2 years ago
Read 2 more answers
A store has 300 televisions on order, and 80% are high definition, how many televisions on order are high difinition?
Brilliant_brown [7]

Answer:240

Step-by-step explanation:

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5 0
3 years ago
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Answer:

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6 0
2 years ago
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