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Virty [35]
3 years ago
13

Which expressions are equivalent to -7z + (-2.5) + 3.5z +4y -4.5

Mathematics
1 answer:
alukav5142 [94]3 years ago
6 0

Answer:

i think it would be negative6.5z

Step-by-step explanation:

bc thats how it adds up

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Please help with multiplying binomials! Show your work!<br> (3n+2)(n+3)
snow_tiger [21]
To multiply binomials, use the FOIL method. You start by multiplying the first terms in each binomial, 3n * n. The F stands for first. 

Then you multiply the outside terms, 3n * 3. The O stands for outsides.

Then you multiply the inside terms, 2 * n. The I stands for insides

Then you multiply the last terms, 2 * 3. The L stands for last

Now solve for each, place them in the same equation, and combine like terms.

3n * n = 3n²
3n * 3 = 9n
2 * n = 2n
2 * 3 = 6

Your equation becomes 3n² + 9n + 2n + 6. 

The 9n and 2n can combine together because they are like terms. Your answer becomes:

3n² + 11n + 6
7 0
4 years ago
I HAVE 2 MORE QUESTIONS AFTER THIS 20 POINTSSS!
ioda

Answer:

Step-by-step explanation:

you have to do 49000 - 8200 which is 40800, and in scientific notation, that is 4.08 * 10^4

3 0
3 years ago
Read 2 more answers
Marisol is making a rectangular wooden frame. she wants the length of the frame to be no more than 12 inches. she has less than
Blababa [14]
B is your answer
The perimeter of a rectangle is2l + 2wThis has to be less than 30 because she has less than 30 inches of wood altogether.
4 0
4 years ago
Two combines are able to harvest 320 acres of crops in a certain amount of time. How many acres will (a)3, (b)4, (c)6 and (d)7 c
never [62]

Answer:

a) 480 acres

b)640 acres

c)960 acres

d)1120 acres

Step-by-step explanation:

Two combines are able to harvest acres of crops = 320

1 is able to harvest acres of crop = \frac{320}{2} = 160

Three combines are able to harvest acres of crops = 160 \times 3

                                                                                    = 480

Four combines are able to harvest acres of crops = 160 \times 4

                                                                                    = 640

Six combines are able to harvest acres of crops = 160 \times 6

                                                                                    = 960

Seven combines are able to harvest acres of crops = 160 \times 7

                                                                                    = 1120

8 0
3 years ago
Jim mowed 5/9 of a lawn. Sarah mowed 1/3 of the lawn. What fraction of the lawn remained to be mowed?
Montano1993 [528]

Answer:

1/9

Step-by-step explanation:

Because 1/3 is the same as 3/9, 5/9 + 3/9 = 8/9. so then 9/9 - 8/9 = 1/9. Giving them 1/9 of the lawn remained to be mowed.

8 0
3 years ago
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