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2 years ago

X = 2y − 4 7x + 5y = −66

Mathematics

1 answer:

ivolga24 [154]2 years ago

3 0

Answer:

Step-by-step explanation

Substitute 2y-1 for x in the second equation:

7x + 5y = -66

7(2y-4) + 5y = -66

then solve for y:

14y - 28 + 5y = -66

19y = -38

y = -2

Substitute -2 for y in the first equation:

x = 2y - 4

x = 2(-2) - 4

x = -8

The lines intersect at (-8,-2)

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Answer:

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3 years ago

To buy the car new is $43,500.00 however, if you wait 18 months, it’s 55% cheaper. How much can you get the car for in 18 months

hram777 [196]

Answer:

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Step-by-step explanation:

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3 years ago

Area of square plot is = 2500m2, what will be the sides,

Alisiya [41]

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Step-by-step explanation:

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2 years ago

The shelf is 4 feet wide and 2/3 feet deep. what is the area of the shelf?

steposvetlana [31]

Answer:

Area of the self will be $=4\times \frac{2}{3}=\frac{8}{3}=2.666ft^2$

Step-by-step explanation:

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So length pf the shelf l = $\frac{2}{3}$ feet

And width = 4 feet

We have to find the area of the self

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2 years ago

the summer camps had a field trip from the campus to fragrance hill. they traveled at an average speed of 65km/h in the first tw

sergejj [24]

Answer:

I took them a total of 5 hours

Step-by-step explanation:

First you multiply 65 by 2 because of the first two hours

Then you subtract 130 out of 364 to get 234, those were the first two hours

The next hours you simply divide 234/78, which is 3

3 + 2 = 5 hours

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2 years ago