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Karolina [17]
2 years ago
5

Please help. i'm currently failing !

Mathematics
2 answers:
eduard2 years ago
8 0

Answer:

It has a numerator and denominator

Step-by-step explanation:

Rational number have a numerator and a denominator

Alla [95]2 years ago
7 0

Answer: it’s a rational number because all rational numbers are fraction, also if you need help on your classes or work I can help you pass okay?

Step-by-step explanation:

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BRAINLIESTT ASAP! PLEASE HELP ME :)
Mamont248 [21]

Denali- 6.7x70= 469

The building should be strong enough to withstand an earthquake of that magnitude.

Rat Island- 7.8x30=234

The building should be string enough to withstand an earthquake of that magnitude.

Hope this helps! ;)

8 0
3 years ago
he table gives the probability distribution of the number of books sold in a day at a bookstore. What is the probability of 16 o
Pepsi [2]
16 or more books sold in a day will include two intervals from the given table:

a) 16 - 20 books sold.
Probability = 0.201

b) 21 - 25 books sold.
Probability = ?

Since the table gives the probability distribution, the sum of all the probabilities must be equal to 1. We are given the probabilities of 4 out 5 intervals. So in order to find the probability of the 5th interval (21-25) we can subtract the sum of probabilities of rest of the intervals from 1.
So, P(21 - 25) = 0.019

In order to find the probability of 16 or more books sold we need to sum the probabilities of both these intervals.

So, the probability of 16 or more books being sold on a given day = 0.201 + 0.019 = 0.220
4 0
3 years ago
A cylinder has diameter of 4ft and a height of 9ft. Explain whether halving the diameter has the same effect on the surface area
elena55 [62]

Answer:

See Below

Step-by-step explanation:

The surface area of cylinder is given by the formula:

SA=2\pi r^2 + 2\pi r h

Where

r is radius ( diameter is 4, so radius is 4/2 = 2)

h is height ( h = 9)

Lets find original surface are:

SA=2\pi r^2 + 2\pi r h\\SA=2\pi (2)^2 + 2\pi (2) (9)\\SA=8\pi +36\pi\\SA=44\pi

<u>Halving diameter:</u>

diameter would be 4/2 = 2, so radius would be 2/2 = 1

So, SA would be:

SA=2\pi r^2 + 2\pi r h\\SA=2\pi (1)^2 + 2\pi (1) (9)\\SA=2\pi +18\pi\\SA=20\pi

<u>Halving height:</u>

Height is 9, halving would make it 9/2 = 4.5

Now, calculating new SA:

SA=2\pi r^2 + 2\pi r h\\SA=2\pi (2)^2 + 2\pi (2) (4.5)\\SA=8\pi + 18\pi\\SA= 26\pi

Original SA is 44\pi,

Halving diameter makes it 20\pi

Halving height makes it 26\pi

So, halving diameter does not have same effect as halving height.

5 0
3 years ago
9-5(4-2)<br> --------------<br> 3+5
nirvana33 [79]

Answer:

-1/8

Step-by-step explanation:

9-5(4-2)

--------------

3+5

First do the parentheses

9-5(2)

--------------

3+5

Then calculate the top and bottom of the fraction

We need to multiply and divide first

9-10

--------------

3+5

-1

--------------

8

5 0
3 years ago
Write the phrase as an expression.<br><br> The product of number h and 3
alexandr1967 [171]
Answer: 3h

Explanation: Product = Multiplication
Number 1 = ?
Number 2 = 3
8 0
3 years ago
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