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Paraphin [41]
2 years ago
14

Simplify polynomials -3x²+2x-x³+4-7x²​

Mathematics
2 answers:
Morgarella [4.7K]2 years ago
7 0
Answer = -x3 -10x2 +2x +4
grigory [225]2 years ago
5 0

Answer:

-(x^2 + 10x^2 - 2x - 4)

Step-by-step explanation:

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Whose problem is best modeled by a division expression?
puteri [66]

Answer:

only Tanveer's

Step-by-step explanation:

7 0
3 years ago
Which value if x makes this proportional true? 14/20=56/x A.x=62 B.x=70 C.x=80 D.x=100​
Leya [2.2K]
<h3>Answer:  C) x = 80</h3>

==================================================

Work Shown:

Let's cross multiply to get the following

14/20 = 56/x

14*x = 20*56

14x = 1120

x = 1120/14

x = 80

-------------------

As a way to check the answer, we can type 14/20 - 56/80 into the calculator and we should get 0. I'm taking advantage of the rule that if A = B, then A-B = 0. This trick is handy to check if two sides of any equation are equal to one another.

6 0
2 years ago
Read 2 more answers
the temperature in Nico's town was -2.9 f at noon . the temperature increased at a steady rate of 1.3 f per hour until 6:00p.m.
kotykmax [81]
Temperature at noon: Tn=-2.9 f
Rate: r=+1.3 f/h
Total decreased: d=-3.7 f 
Temperature at midnight: Tm=?

Tm=Tn+r(6 p.m.-12 m)+d
Tm=-2.9 f+(1.3 f/h)(18 h-12 h)+(-3.7 f)
Tm=-2.9 f+(1.3 f/h)(6 h)-3.7 f
Tm=-2.9 f+7.8 f-3.7 f
Tm=1.2 f

Answer: T<span>he temperature at midnight was 1.2 f</span>
6 0
3 years ago
The sales tax for an item was $36.80 and it cost $460 before tax.
katen-ka-za [31]

Answer:

16,928

Step-by-step explanation:

just solve it in calculation so you can see the answer

and remember study hard to go to bts concert joke to your dream

4 0
2 years ago
PLEASE HELP!! Image Attached! find the value of y, rounded to the nearest tenth
m_a_m_a [10]
5 * 7 = 9y
35 = 9y
<span> <span> <span> 3.8888888889 </span> </span> </span>
y = 3.9

5 0
3 years ago
Read 2 more answers
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