2 years ago

Simplify the expression. (3x2 – 4x + 1) + (-x2 + x – 9)

Mathematics

2 answers:

LuckyWell [14K]2 years ago

4 0

$(3x^2 - 4x + 1) + (-x^2 + x - 9)=\\3x^2-4x+1-x^2+x-9=\\2x^2-3x-8$

Margaret [11]2 years ago

3 0

= (6x+4x+1)+(-2x+x-9)
= (2x+1)+(-x-9)
= 2x+1-x-9
= x-8

You might be interested in

A tortoise and a hare are competing in a race around a 1600-meter track. The arrogant hare decides to let the tortoise have a 78

Sindrei [870]

I am presuming that the question is who won or by how much did the winner win.

distance equals rate times time, or d = r*t
For the Hare d = 1600 and r = 10
1600 = 10 t
Divide both sides by 10
t = 160
The hare finished in 160 seconds

For the tortoise d = 1600 - 780 = 820 (due to the head start) and r = 5.3
820= 5.3 t
Divide both sides by 5.3
t = 154.72 (rounded to the hundredths place)

The tortoise won by 5. 28 seconds (160-154.72)

6 0

2 years ago

Read 2 more answers

At Southside Middle School, 30% of the students play an instrument. There are 310 students. How many students play an instrument

rodikova [14]

93 students play an instrument because you would take 310 (the total amount of students) and multiply it by 0.3 (the thirty percent) and get 93

5 0

2 years ago

An acting award is a square pyramid with a base that measures 6 inches on each side. The slant height is 8 inches. What is the s

kupik [55]

Answer:

The surface area of the award is $132\ in^{2}$