3 years ago

How do you know that substitution give a you the answer to a system of equations

1 answer:

6 0

Solve each system by substitution. Check your solution. Writing How do you know that substitution gives the answer to a system of equations? ... You Would solve the second equationfor y and then substitute back into the first equation.

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I need help please!!!

seraphim [82]

Answer: number 1

Step-by-step explanation:

That is how you would write the ratio word for word.

- hope this helped!

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3 years ago

-6.25x>-38 3/4<br> solve the inequality

Nostrana [21]

Answer:

Step-by-step explanation:

-6.25x > -38 3/4

-6.25x > -155/4

Multiply by (-4)

25x > 155

divide by 25,

x > 155/25

x > 31/5

x > 6.2

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3 years ago

Gisele has $5.90 in quarters and nickels. If Gisele has 16 more nickels than quarters, how many quarters does she have? [I don't

krok68 [10]

Answer:

See below

Step-by-step explanation:

Quarters= 25(x)

Nickels =5(x+16)

25x+5(x+16)=590 (no decimal)

If you solve for x, you’ll get the number of quarters.

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3 years ago

4(1 + 9x)<br> i need assistance!

natta225 [31]

36x+4 is your answer

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3 years ago

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A software coder can type 79 words per minute. She works 5 eight hour days each week (not including

lions [1.4K]

Answer:

A. 189,600

Step-by-step explanation:

(79×60)×5=23700

23700×8=189600

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3 years ago

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