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never [62]
3 years ago
8

Use back-substitution to solve the system of linear equations.

Mathematics
2 answers:
ludmilkaskok [199]3 years ago
5 0

Step-by-step explanation:

x - y + 5z = 29

y + 2z = 4

z = 7

since z = 7 we can use this value in second equation

y + 2×7 = 4 and y = -10

now we know the value of y we can solve the first equation

x -(-10) + 5×7 = 29

x + 10 + 35 = 29

x = -11

kobusy [5.1K]3 years ago
3 0

Answer:

work is shown and pictured

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Murrr4er [49]

Taking a quotient, we will see that she can make 7 bowls of cereal (and some leftover milk).

<h3>How many bowls of cereal would kathy have?</h3>

We know that for each bowl, she needs 1/2 cups of milk.

And we also know that she has a total of (3 + 3/5) cups of milk.

To know how many bowls she can make, we need to take the quotient between the total that she has and the amount that she needs for each bowl:

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We can rewrite the total as:

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If you want to learn more about quotients:

brainly.com/question/629998

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7 0
3 years ago
What is the coefficient of x2 in the expansion of (x + 2)3?
wolverine [178]
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Dont need to worry

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Step-by-step explanation:

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