Ask question

Ask question

All categories

3 years ago

8

. Simplify the sum. (2u3 + 6u2 + 2) + (7u3 – 7u + 4)

1 answer:

Elena L [17]3 years ago

7 0

Answer:

9u^3 + 6u^2 - 7u + 6

Step-by-step explanation:

You might be interested in

I need awnsers please

romanna [79]

$y=f(x) =12\sqrt x\\\\\text{Replace x with y and then solve for y:}\\ \\~~~~~~~x = 12\sqrt y\\\\\implies \sqrt y = \dfrac{x}{12}\\ \\\implies y = \dfrac{x^2}{144}\\\\\implies f^{-1} (x) = \dfrac{x^2}{144} \\\\\text{Hence the inverse of the function is}~ \dfrac{x^2}{144}$

5 0

2 years ago

If it takes 1 person 2/3 of a minute to prepare a bag how long would it take 4 peiple to prepare a bag?

Anna11 [10]

Answer:

1/6 of a minute.

Step-by-step explanation:

4 0

3 years ago

Please help and show work

Bogdan [553]

The answer should be X= 3.60m

3 0

3 years ago

Fernell and Dabney shared the driving

Agata [3.3K]

Answer:

15 hours

Step-by-step explanation:

Given:

Fernell's speed $v_F= 50$ mph

Dabney's speed $v_D= 64$ mph

Denote:

$D_F$ - distance covered by Fernell

$D_D$ - distance covered by Dabney

$t_F$ - Fernell's time

$t_D$ - Dabney's time

1. If Fernell drove for 3 hours longer than Dabney, then his time is 3 hours more than Dabney's time and

$t_F=t_D+3$

2. If Fernell covered 18 miles less than Dabney, then

$D_D-D_F=18$

Use formula $D=t\cdot v$

$D_D=v_D\cdot t_D\Rightarrow D_D=64\cdot t_D\\ \\D_F=v_F\cdot t_F\Rightarrow D_F=50\cdot (t_D+3)$

Subtract from the first equation the second equation and equate it to 18:

$64t_D-50(t_D+3)=18\\ \\64t_D-50t_D-150=18\\ \\14t_D=168\\ \\t_D=12\ \text{hours}$

$t_F=t_D+3=12+3=15\ \text{hours}$

5 0

3 years ago

A language arts teacher at Patton Middle School conducts a random survey of the student body and finds that 15% of the students

svetlana [45]

Answer:

115

Step-by-step explanation:

3 0

3 years ago