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3 years ago

Which numbers are perfect squares? Check all that apply.

Mathematics

2 answers:

kupik [55]3 years ago

7 0

Answer:C A H are correct

Step-by-step explanation:

Andrew [12]3 years ago

4 0

A perfect square is a number made by squaring a whole number.

Since

$1^2=1;$
$4^2=16;$
$10^2=100,$

numbers 1, 16, 100 are perfect squares. You cannot find such whole number n, that

$2=n^2;$
$18=n^2;$
$32=n^2;$
$44=n^2;$
$94=n^2,$

therefore, numbers 2, 18, 32, 44, 94 are not perfect squares.

Answer: 1, 16, 100.

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What is area of a parallelogram that has a base of 12 3/4 in. and a height 2 1/2in.?

laiz [17]

The area is Base * Height
Area = b * h
b =12 3/4 in
h = 2 1/2 in

Area = 12.75 * 2.5 = 31.875 or 31 7/8 square inches.

5 0

3 years ago

This got me all confused ^^'

Ulleksa [173]

Answer:

im confused as you are

Step-by-step explanation:

look so what it is saying its that theres 22 in total. 14 already have a sibling and 18 have a pet. 22-14 is 8 and 22-18 is 4. how are you supposed to find the rest of them who have both?

5 0

3 years ago

Read 2 more answers

The rectangular face of a computer monitor has a length of 20 inches and a width of 12 inches

ANTONII [103]

A = bh

A = 20(12)

A = 120

Area of the computer is 120

b would be 20

and the h would be 12

b = base

h = height

8 0

3 years ago

The perimeter of a square is 52 m. What is the area of the square?

Studentka2010 [4]

<h2>Question:-</h2>

The perimeter of a square is 52 m. What is the area of the square ?

<h2>Solution:-</h2>

Perimeter of a square = 52 m

4 × side = 52

side = $\frac{52}{4}$

side = 13

So, area of square = (side)² = (13)² = 169 sq m.

<h3>The area of the square is 169 sq m. [Answer]</h3>

5 0

3 years ago

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Twenty percent of all telephones of a certain type are submitted for service while under warranty. Of these, 60% can be repaired

nignag [31]

Answer:

0.0052 = 0.52% probability that exactly four will end up being replaced under warranty.

Step-by-step explanation:

For each telephone, there are only two possible outcomes. Either they are replaced under warranty, or they are not. The probability of a telephone being replaced under warranty is independent of any other telephone, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

Twenty percent of all telephones of a certain type are submitted for service while under warranty. Of those, 40% are replaced.

This means that $p = 0.2*0.4 = 0.08$

Company purchases ten of these telephones.

This means that $n = 10$

What is the probability that exactly four will end up being replaced under warranty?

This is P(X = 4). So

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 4) = C_{10,4}.(0.08)^{4}.(0.92)^{6} = 0.0052$

0.0052 = 0.52% probability that exactly four will end up being replaced under warranty.

4 0

3 years ago