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erik [133]
3 years ago
10

What is -28x + 20x^2?

Mathematics
1 answer:
ser-zykov [4K]3 years ago
6 0

Answer:

6

Step-by-step explanation:

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What Is the percent equal to 3/10
lianna [129]
30 %
3/10 * 10 = 30/100
30/100= 30%
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3 years ago
Madeline estimated the product of 3.56 and 8.3
ycow [4]

Answer:29.548

Step-by-step explanation:What i know is when they ask you for the product of something there asking you to multiply.  So 3.56 x 8.3

4 0
4 years ago
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If a coin is flipped 20 times and a head comes up 7 times, what is the relative frequency of a head coming up?
Tju [1.3M]
Relative frequency is the absolute frequency (i.e. the number of times of the wanted result) divided by the total  number of events.

In this case you have to calculate: the number of heads that came up divided by the number of times the coin was flipped.

Number of times the coin was flipped: 20
Numbef of times head came up: 7

Relative frequency: 7 / 20 = 0.35, which is the option B.
7 0
3 years ago
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Shryia read a 480-page-long book cover to cover in a single session, at a constant rate. After reading for 1.5 hours, she had 40
svet-max [94.6K]

Answer:

The required equation is P(t) = -52t + 480

Step-by-step explanation:

Consider the provided information.

Let P represent the number of pages left to read after t hours.

Shryia read a 480-page-long book cover to cover in a single session, at a constant rate. After reading for 1.5 hours, she had 402 pages left to read.

Total number of page Shryia read in 1.5 hours is:

480-402 = 78

It is given that the rate is constant i.e 1.5 hours,

Therefore, she read 78 pages in 1.5 hours.

She can read \frac{78}{1.5} = 52 page per hour

The required equation is:

P(t) = -52t + 480

Where t represents the number of hours.

8 0
3 years ago
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(+4) + (+9) + (+8) =
Ksju [112]

Answer:

Question 1: 21

Question 2: 6

Question 3: -3

Question 4: 9

4 0
3 years ago
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