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4 years ago

How do you solve for b in this expression

Mathematics

1 answer:

Leona [35]4 years ago

7 0

Remember you can do anything to an equation as long as you do it to both sides

8-(3+b)=b-9

remember the distributive property
a(b+c)=ab+ac

distribute that invisible -1
-(3+b)=-1(3+b)=-1(3)-1(b)=-3-b

8-3-b=b-9
add like terms
5-b=b-9
add b to both sides
5=2b-9
add 9 to both sides
14=2b
divide both sides by 2
7=b
b=7

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ILL GIVE BRAINLIEST

bixtya [17]

Answer:

The answer is B

Step-by-step explanation:

If you look at the graph, you can look at number of tickets and see that to get 10 tickets, you would get charged 80 dollars not 88, so the answer is B

8 0

3 years ago

Find the number of 4-digit numbers that contain at least three odd digits.

Greeley [361]

Answer:

3000

Step-by-step explanation:

First find the 4 digit numbers that have all odd digits

Possible Odd digits =5(1,3,5,7,9)

So, total number of 4 digit numbers with odd digits can be calculated as =5×5×5×5=625

Now find all the 4 digits numbers with at least 3 odd digits and the first digit as either 2,4,6,8 ( 0 would make it a 3 digit number)

The first digit can be 2,4,6,8

=4×5×5×5=500

Now find all the 4 digits numbers with at least 3 odd digits and the second digit as either 0,2,4,6,8

=5×5×5×5=625

Now find all the 4 digits numbers with at least 3 odd digits and the third digit as either 0,2,4,6,8

Now find all the 4 digits numbers with at least 3 odd digits and the second digit as either 0,2,4,6,8

=5×5×5×5=625

Now find all the 4 digits numbers with at least 3 odd digits and the fourth digit as either 0,2,4,6,8

=5×5×5×5=625

Add them together

625+500+625+625+625=3000

4 0

4 years ago

Read 2 more answers

Evaluate 4x² + 3x for x = 2

kvasek [131]

Answer:

Step-by-step explanation:

4x² + 3x = 4(2)² + 3(2) = 4(4) + 6 = 16 + 6 = 22

Answer: 22

8 0

2 years ago

What proportion of US women have a height greater than 69.5 inches?

kiruha [24]

Using the Normal distribution, it is found that 0.0359 = 3.59% of US women have a height greater than 69.5 inches.

In a <em>normal distribution</em> with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

It measures how many standard deviations the measure is from the mean.

After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.

US women’s heights are normally distributed with mean 65 inches and standard deviation 2.5 inches, hence $\mu = 65, \sigma = 2.5$ .

The proportion of US women that have a height greater than 69.5 inches is <u>1 subtracted by the p-value of Z when X = 69.5</u>, hence:

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{69.5 - 65}{2.5}$

$Z = 1.8$

$Z = 1.8$ has a p-value of 0.9641.

1 - 0.9641 = 0.0359

0.0359 = 3.59% of US women have a height greater than 69.5 inches.

You can learn more about the Normal distribution at brainly.com/question/24663213

3 0

3 years ago

Can you answer the q's. Thanks

Brrunno [24]

Answer:

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Step-by-step explanation:

4 0

3 years ago