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solniwko [45]
3 years ago
6

I need some help with this!

Mathematics
1 answer:
Dimas [21]3 years ago
3 0

(-x³ +3x +4) -(2x³ +7x² -9) = -x³ +3x +4 -2x³ -7x² +9 . . . . eliminate parentheses

= x³(-1-2) +x²(-7) +x(3) +(4+9)

= -3x³ -7x² +3x +13 . . . matches the second choice.

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Suppose 12 quarts of pure antifreeze is mixed with 8 quarts of a solution that is 72% antifreeze. Answer the questions below. Do
ra1l [238]
(a)  

12+0.72(8)

12+5.76

17.76 qts of antifreeze

(b)

100(12+8(.72))/(12+8)

100(12+5.76)/20

100(17.76)/20

5(17.76)

88.8%
4 0
3 years ago
What is the sum f 1.57 and 6.88
pentagon [3]
What is the sum of 1.57 and 6.88?

Ok, so lets work this out together!

Sum means add.

   6.88
+ 1.57

That would be: 

= 8.45

Hope i helped!
5 0
3 years ago
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Arizbeth spent $20.08 to put 8 gallons of gas in her car. How much would 13 gallons have cost?
Misha Larkins [42]

Answer:

32.63

Step-by-step explanation:

since arizbeth is spending $20.08 to put 8 gallons in her car the first step is to divide 20.08 by 8.Then since you have per gallon you have to figure out what 13 gallons is so you multiply per gallon by 13

8 0
3 years ago
Timin
Brums [2.3K]
I think I just had a stroke trying to read this
6 0
3 years ago
Pat's Pizza Place sells large pies for $12 with a charge of $2 for each topping. If Reagan only has a $20 bill to spend on a piz
Cerrena [4.2K]

Answer:

The 1st graph

Step-by-step explanation:

20 = 2t + 12

2t = 8

t = 4

At most she can afford 4 toppings which means she can have 4 toppings to less: t ≤ 4. This is represented in the 1st graph.

3 0
3 years ago
Read 2 more answers
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