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3 years ago

Please help me I’m not really good at math.

Mathematics

1 answer:

Lynna [10]3 years ago

8 0

Answer:

Step-by-step explanation:

since B. Crosses through the middle, we can see that 4x+1 = 33.

simplest way:

Easily, multiply 4 multiple times till you receive 32.

so, multiply 4 x 8 to receive 32.

Then add 1 to 32.

33.

Answer 8. because 4x8+1=33.

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Need help & Thank you !!!!

loris [4]

The right answer is of option D.

please see the attached picture for full solution...

Hope it helps...

Good luck on your assignment......

8 0

4 years ago

Suppose that the probabilities of a customer purchasing 0, 1, or 2 books at a book store are 0.20.2, 0.30.3, and 0.50.5, res

PIT_PIT [208]

Answer:

0.78

Step-by-step explanation:

We have the next probability distribution:

X P(X)

0 0.2

1 0.3

2 0.5

As we can see when we add all the probabilites the result is 1. Now calculating the mean we have:

$mean=\mu=(0\times0.2)+(1\times 0.3)+(2\times 0.5)=0+0.3+1=1.3$

The standard deviation is:

$\sigma=\sqrt{\sum(x-\mu)^{2}(P(x))}$

Then using the data that we have:

$\sigma=\sqrt{\sum(x-\mu)^{2}(P(x))}\\\sigma=\sqrt{(0-1.3)^{2}(0.2)+(1-1.3)^{2}(0.3)+(2-1.3)^{2}(0.5)}\\\\\sigma=\sqrt{(-1.3)^{2}(0.2)+(-0.3)^{2}(0.3)+(0.7)^{2}(0.5)}\\\\\sigma=\sqrt{(1.69)(0.2)+(0.09)(0.3)+(0.49)(0.5)}\\\\\sigma=\sqrt{0.338+0.027+0.245}\\\\\sigma=\sqrt{0.61}\\\\\sigma=0.78\\$

Then the standard deviation is 0.78

6 0

3 years ago

A company charger shipping fee that is 4.5% of the purchase price for all items it ships. What is the fe to ship an item that co

kenny6666 [7]

Answer:

This is an percentage change question, by any chance you have a maths textbook, look for units that contains the topic: Percentage Change. Now, let's get solving! :)

Step-by-step explanation:

Firstly, you must multiply 4.5% with 56. That is: shipping fees x purchase price

That gives ($) 2.52 (this is your answer)

No addition/totaling needed as the question asked ONLY for the shipping fees.

Stay safe and Merry Christmas! :)

3 0

3 years ago

FIND THE VOLUME OF THE TRIANGULAR PRISM<br> height=6cm<br> side=7cm<br> length=10cm

Dima020 [189]

Answer:

$210cm^3$

Step-by-step explanation:

Given the triangular prism with:

Height of the Triangle =6cm
Base of the Triangle =7cm
Length of the Prism =10cm

Volume of a Prism= Base Area X Length of the Prism

$=\frac{1}{2}X6X7X10\\ =210cm^3$

The volume is 210 cubic centimeter.

6 0

3 years ago

Read 2 more answers

Harold is twice as old as Jack, who is three years older than Dan. If Harold's age is five times Dan's age, how old in years is

never [62]

Dan's age is x.
Jack is three years older than Dan, so his age is x+3.
Harold is twice as old as Jack, so his age is 2(x+3).

Harold's age is five times Dan's age.
$2(x+3)=5x \\
2x+6=5x \\
6=5x-2x \\
6=3x \\
\frac{6}{3}=x \\
x=2 \\ \\
x+3=2+3=5$

Jack is 5 years old.

4 0

3 years ago

Read 2 more answers