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harkovskaia [24]
2 years ago
14

HELP PLEASEEE ASAPPPPP

Mathematics
1 answer:
deff fn [24]2 years ago
6 0

Answer:

Its 3.3

Step-by-step explanation:

I took the quiz HOPE THIS HELPS!!!!

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Naoya read a book cover to cover in a single session, at a rate of 55 pages per hour. After reading for 4 hours, he had 330 page
alina1380 [7]

She reads at 55 pages per hour for 4 hours so 55*4 = 220 pages so far. This means that she read 220 and had 330 left so 220 + 330 = 550 so the book is 550 pages. If she reads 55 pages per hour and there is a total of 550 pages, 550/55 = 10 hours to read the book.

4 0
3 years ago
The table above shows four numeric expressions. Which expression is an integer when it's evaluated?
Gre4nikov [31]

Answer: H

Step-by-step explanation:

9(-3)=-27, which is an integer.

8 0
2 years ago
Standard deviation of a normal data distribution is a _______. Group of answer choices
FrozenT [24]

Answer:

Standard deviation of a normal data distribution is a measure of data dispersion.

Step-by-step explanation:

Standard deviation is used to measure dispersion which is present around the mean data.

The value of standard deviation will never be negative.

The greater the spread, the greater the standard deviation.

Steps-

1. At first, the mean value should be discovered.

2.Then find out the square of it's distance to mean value.

3.Then total the values

4.Then divide the number of data point.

5.the square root have to be taken.

Formula-

SD=\sqrt{\frac{(\sum{x-x)^2}  }{n-1}

   Advantage-

It is used to measure dispersion when mean is used as measure of central tendency.

5 0
3 years ago
(a+2b)² ?????????????????????<br>​
lbvjy [14]

Answer:

a² + 4ab + 4b²

Step-by-step explanation:

Given

(a + 2b)²

= (a + 2b)(a + 2b)

Each term in the second factor is multiplied by each term in the first factor, that is

a(a + 2b) + 2b(a + 2b) ← distribute both parenthesis

= a² + 2ab + 2ab + 4b² ← collect like terms

= a² + 4ab + 4b²

3 0
3 years ago
Which of the following is equal to [(x^2y^3)^-2/(x^6y^3z)^2]^-3
lara [203]

Answer:

A,B,D

Step-by-step explanation:

right on edge

4 0
3 years ago
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