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Kamila [148]
3 years ago
6

Simplify. Final answers should be written in standard form. (Reminder: in order to indicate an exponent you must use the carrot

(^) for example.... n^2 would indicate n squared). No spaces in your answer.
4(2-3w)(w^2-2w+10)
Mathematics
1 answer:
rosijanka [135]3 years ago
7 0

Answer:

-12w^3+32w^2-136w+80

Step-by-step explanation:

4(2-3w)(w^2-2w+10)

multiply first two:

(8-12w)(w^2-2w+10)

multiply:

8w^2-16w+80-12w^3+24w^2-120w

simplify:

-12w^3+32w^2-136w+80

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3 years ago
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Can someone plz help me solved this problem I need help ASAP plz help me! Will mark you as brainiest!
Over [174]

Step-by-step explanation:

initial speed = 272 ft/s

h = -16t² + 272t

a. 1120 = -16t² + 272t we change a bit into

16t² - 272t + 1120 = 0 then divide all with factor 16

t² - 17t + 70 = 0

(t - 10)(t - 7) = 0

t = 10 and t = 7

7 s when it goes up and 10 sec when the rocket goes down.

b. 1152 = -16t² + 272t we change a bit into

16t² - 272t + 1152 = 0 then divide all with factor 16

t² - 17t + 72 = 0

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t = 9 and t = 8 sec

c. since the answer of a and b is:

7 sec and 8 sec the rocket goes up but at 9 sec and 10 sec the rocket goes down then we can take conclusion that the maximum height is reached at 8.5 s

so how long the rocket in the air?

goes up : 8.5 sec

goes down : 8.5 sec

total = 17 sec

8 0
4 years ago
At 4 p.m., the temperature started to change drastically. Each hour, for three hours the temperature decreased by 7°F
Natalija [7]

Answer:

07-7-7

Step-by-step explanation:

3 0
3 years ago
Kelly and Greta are asked to write an equation for the scenario below. "One person was able to plant 4 trees in the same amount
Alina [70]

Answer:

y=\dfrac{1}{4}x

Kelly is correct.

Step-by-step explanation:

One person is able to plant 4 trees

Let x be the number of people

y be the number of trees

The situation is represented by

1x=4y\\\Rightarrow y=\dfrac{1}{4}x

5 people are able to plant 20 trees

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So, the situation is represented by y=\dfrac{1}{4}x

Hence, Kelly is correct.

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Snezhnost [94]

Answer:

y=\frac{4}{3}x

Step-by-step explanation:

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y=mx+b

where m is slope and b is y-intercept

here  

m=\frac{4}{3}  

and

b=0

8 0
3 years ago
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