Is substitutions the best method to use when one variable is already known

2 answers:

8 0

There’s two ways to substitute, but i think you mean if you know x but don’t know y. if that is true, then yes use substitution

Mama L [17]2 years ago

7 0

Substitution Method is used for solving equations in 2 Variables, where you find the value of one variable in terms of the other and then substitute that value into any one of the equations. It can also be used when one Variable is known to you and you have to find the other.

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I need help with this. Someone told me that the answer was 52 but idk how to explain how I got it. Can you please help me out. T

hram777 [196]

Answer:

3 pound cake=48 ounces)4 pound cake=64 ounces

Step-by-step explanation:

[16 ounces = 1 pound]-so you got this

James bought a cake that weighed over 4 pounds.

And one that is 3 pounds,so you wanna multiply 16 x 3 and you get 48

So that leaves the 3 pound cake to be 48 ounces

Just like the first one,you wanna multiply 16 x 4 and you get 64

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2 years ago

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AlekseyPX

Answer:

The correct answer if F

Step-by-step explanation:

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3 years ago

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stealth61 [152]

The bears won 9 games.
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3 0

3 years ago

Katie and becca each bought a new book for $50 . Katie sold her book to the bookstore for 25% less than the original price. . Be

r-ruslan [8.4K]

$\text{Lets find the prices in which they sold their books for}\\\\\text{Katie:}\\\\\text{She sold the book for 25\% less than the original price, so multiply 50 by}\\\text{0.25 and subtract}\\\\50*0.25=12.5\\\\50-12.5=37.50\\\\\text{Becca:}\\\\\text{Becca sold the book for 40\% less than the original price, calculate how}\\\text{much she sold it for}\\\\50*0.40=20\\\\50-20=30\\\\$ $\text{We need to find how much more money Katie made than Becca, so subtract}\\\text{Becca's cost from Katie's cost}\\\\37.50-30=7.50\\\\\boxed{\text{Katie received \$7.50 more than Becca}}$

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At the football game you buy 2 admission tickets for 3.50 each and some buckets of popcorn for your friends. Each bucket costs $

Alik [6]

Answer:for the admission tickets you spend 7.00 dollars minus 27 equals 20 you have 20 dollars left over so you can only buy 4 buckets

Step-by-step explanation:

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3 years ago