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Lyrx [107]
3 years ago
8

What is the value of 2(x+y)-(x-z) ifx=2, y=1, and z=-3

Mathematics
2 answers:
dlinn [17]3 years ago
7 0

Answer:

2(2+1)-[2-(-3)]

(2×3)-5

6-5=1

Assoli18 [71]3 years ago
7 0
You distribute the first number which is to, it will be 4 + 2 then add 2 + 3 then add 4 + 2 and last step is to subtract 6 - 5 so the answer will be 1
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Josiah and his friends are going to the movies. Each ticket costs $10, and popcorn is $5 a bag. There is a $3 service fee for th
Free_Kalibri [48]
Make sure you check this because i do make mistakes.

10 x 4 = 40

75 - 40 = 35

So josiah has 35 dollars to spend for things other than tickets.

35 - 3 = 32 (for the service fee)

So josiah has 32 dollars to spend on popcorn

32/5 = 6.4 but you cant have half a bag of popcorn so

6 bags
8 0
3 years ago
sophia had pieces of rope that were 3 1/5 feet long 4.5 feet long and 5 3/10 feet long 4.5 feet long and 5 3/10 feet long what w
Dennis_Churaev [7]

5/9 of a foot

Step-by-step explanation:

Divide 5 by 9 to find the length for 9 equal pieces

6 0
3 years ago
Read 2 more answers
For what value of x is the rational expression below undefined?<br>(3x-12)/(9-x)
wolverine [178]
When x=9 the expression is undefined.

That is because any number over 0 is undefined, including 0/0.
8 0
3 years ago
Show all work:
DerKrebs [107]

Answer:

m=-3

Step-by-step explanation:

m - 7 = -10

Ok so,

in order to get m by itself you just need to do the opposite of -7 which is +7 so you have to add 7 to both sides. On the left, both of the 7's cancel out and on the right -10 + 7 = -3. So, now it should look like this.

m=-3

To check you just need to plug in -3 into the question

Hope this helps! Have a good day

4 0
3 years ago
Tyrone wrote an equivalent expression for 28 + x - 2n + 7 - n - 5x + 4. His equivalent expression was -3n - 5x + 39 + x. What er
MA_775_DIABLO [31]

Answer with Step-by-step explanation:

We are given an expression:

28 + x - 2n + 7 - n - 5x + 4

We have to find its equivalent expression

On combining the like terms of the above expression

28+4+7+x-5x-2n-n

= 39-4x-3n

= -3n-4x+39

According to Tyrone the equivalent expression was:

-3n - 5x + 39 + x

The error Tyrone made was:

A. Tyrone neglected to combine the x terms

6 0
3 years ago
Read 2 more answers
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