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Eva8 [605]
3 years ago
15

Distribute 5(2s^2-3s+4)

Mathematics
2 answers:
Burka [1]3 years ago
6 0

Your answer would be 10s^2 - 15s + 20

Triss [41]3 years ago
3 0

10s^2-15s+20 is the answer according to distributive property

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A particle P, starting from rest at A, moves in a straight line ABCD. It accelerates uniformly at 5ms-2 from A to B. From B to C
Radda [10]
First, we find the time spent accelerating:
s = ut + 1/2 at²; u = 0
10 = 1/2 5t²
t = 2 seconds
Velocity at point B:
v = u + at; u = 0, a = 5 m/s², t = 2 s
v = (5)(2) = 10 m/s

Now, the same velocity is at C so we find the time decelerating to 0 in CD
v = u + at, v = 0, u = 10 m/s, a = -4 m/s²
0 = 10 - 4t
t = 2.5 seconds
Total time = time(AB) + time(BC) + time(CD)
20 = 2 + time(BC) + 2.5
time(BC) = 15.5 seconds

Distance = velocity x time
BC = 10 x 15.5
= 155 m
3 0
4 years ago
Find the surface area of each prism or pyramid. Round to the nearest tenth if necessary. Can someone help me with 17-19 for 30 p
Orlov [11]
17) 388 in^2
18) 585 in^2
19) 960 ft^2
*fyi- ^2 means squared just in case you didn’t know also hope the picture helps!

4 0
3 years ago
30 points ASAP! <br> Help!!! Explanation would be great of how to do it.
Fofino [41]
<h3>Answer:   14400</h3>

Chances are your teacher doesn't want you to enter any commas. You won't type in the dollar sign either.

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

Explanation:

Nice work on selecting the correct equation to set up.

We'll cross multiply to help solve for x.

The idea of cross multiplication is that \frac{A}{B} = \frac{C}{D} turns into A*D = B*C

So,

\frac{5040}{280000} = \frac{x}{800000}\\\\5040*800000 = 280,000*x\\\\4,032,000,000 = 280,000x\\\\280000x = 4,032,000,000\\\\x = \frac{4,032,000,000}{280,000}\\\\x = 14,400\\\\

That means the person would pay $14,400 on a property worth $800,000.

4 0
3 years ago
Write a mixed number between 4 and 5, and then write its reciprocal.
11Alexandr11 [23.1K]

Answer:

4\frac{1}{2} and it's reciprocal is \frac{2}{9}

Step-by-step explanation:

4.5 is a number in between 4 and 5, as a fraction it is written as 4\frac{1}{2}. To get the reciprocal you need to change it to an improper fraction so it becomes \frac{9}{2}. The reciprocal will be 1 ÷ \frac{9}{2}. This literally means the number will just invert and become \frac{2}{9}

6 0
3 years ago
A Sociology student investigated the association between a country's Literacy Rate and Life Expectancy, and then drew the conclu
Gnom [1K]

Solution :

The term 'literacy rate' provides the ability of a person who is from a definite age group can read or write.

a). $R^2$ does not determine the rate at which the variable explains another, but it explains the amount the amount of variability in one of the variables as explained by the other variable.

b). The slope given provides an expected improvement but it cannot guarantee the improvement. The value may be less or it could be more also.

The regression model provides the prediction and not the actual values.

6 0
3 years ago
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