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yaroslaw [1]
3 years ago
14

I NEED HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I WILL GIVE BRAINLIST WHOEVER COMES FIRST Evaluate the expression if x = 9 and

y = 2. 5x + y
Mathematics
1 answer:
Rufina [12.5K]3 years ago
5 0

Answer:

To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12. If we know the value of our variables, we can replace the variables with their values and then evaluate the expression.

Step-by-step explanation:

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Answer:

£191.36

Step-by-step explanation:

Sum the parts of the ratio, 1 + 4 = 5 parts

Divide 320 by 5 to find the value of one part of the ratio.

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Thus he bought 64 first class and 256 second class.

Cost = (64 × £0.67) + (256 × £0.58)

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5 0
3 years ago
-10x - 135 = 117 + 2x<br> A. 25<br> B. -18<br> C. -21<br> D. 22 <br> Helps pls
Lina20 [59]

Answer:

C

Step-by-step explanation:

Add 10x to both sides:

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Subtract 117 from both sides:

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Divide both sides by 12:

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Hope this helps!

6 0
2 years ago
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