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Phoenix [80]
2 years ago
6

Solve using the substitution method. Show your work! Full credit will only be given if all steps are shown.

Mathematics
1 answer:
AnnyKZ [126]2 years ago
8 0

One of the ways to solve a system of equation is by using the substitution method

The values of x and y are -9 and 5

<h3>How to use the substitution method </h3>

The equations are given as:

2x + 6y = 12

x + y = -4

Make x the subject in the second equation

x = -4 - y

Substitute x = -4 - y in the first equation

2(-4 - y) + 6y = 12

Expand

-8 - 2y + 6y = 12

Add 8 to both sides

- 2y + 6y = 20

So, we have:

4y =20

Divide through by 4

y = 5

Recall that:

x = -4 - y

So, we have:

x = -4 - 5

x = -9

Hence, the values of x and y are -9 and 5

Read more about the substitution method at:

brainly.com/question/13476446

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2 years ago
a white-tailed deer can sprint at speeds up to 30 miles per hour. American bison can run at speeds up to 3,520 per minute. Which
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For the answer to the question above,
In 1 minute, bison runs 3520 feet
In 60 minutes, the bison would run
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These are equivalent to;
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The bison is faster by 10 miles per hour
Then If you convert the bison's speed to mph you get that it can run at speeds up to 40 mph.

I got this by seeing how many feet that they run in one hour so 3520 x 60 is 211200 which divided by 5280 is 40 mph.

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3 years ago
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A woman is randomly selected from the 18-24 age group. For women of this group, systolic blood pressures (in mm Hg) are normally
dybincka [34]

Answer:

0.0274

Step-by-step explanation:

The mean is \mu =114.8 and the standard deviation is \sigma =13.1.

Calculate

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3 years ago
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