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4 years ago

between what two numbers would 9 be located on a number line? a. 10 and 11 b. 7 and 8 c. 8 and 10 d. 9 and 10

Mathematics

2 answers:

chubhunter [2.5K]4 years ago

7 0

If you look at all of your numbers the answer would have to be C. 8 and 10

Ludmilka [50]4 years ago

3 0

It will be between 8and 10

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a $1,000 savings account earns 2.3% interest compounded monthly. how long will it take to double the original investment?

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4 years ago

Q(a+1) - 2q(a) if q(x) = x²+3x+4

siniylev [52]

$q(x) = {x}^{2} + 3x + 4$

_________________________________

Step(1)

To find q(a) we just need to put a instead of x in q(x) function.

Let's do it...

$q(a) = {a}^{2} + 3a + 4$

Multiply sides by -2 :

$- 2q(a) = - 2( {a}^{2} + 3a + 4)$

$- 2q(a) = - 2 {a}^{2} - 6a - 8$

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Step (2)

To find q(a+1) we just need to put a+1 instead of x in q(x) function.

Let's do it...

$q(a + 1) = ({a + 1})^{2} + 3(a + 1) + 4 \\$

$q(a + 1) = {a}^{2} + 2a + 1 + 3a + 3 + 4 \\$

$q(a + 1) = {a}^{2} + 5a + 8$

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Step (3)

$q(a + 1) - 2q(a) =$

${a}^{2} + 5a + 8 - 2 {a}^{2} - 6a - 8 = \\$

$- {a}^{2} - a = - a(a + 1)$

And we're done.

Thanks for watching buddy good luck.

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8 0

4 years ago

This is adding and subtracting rational expressions. i don’t know how to do this one

Sindrei [870]

Answer:

Step-by-step explanation:

1-0=1 totally trust me

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3 years ago

Please help 15 points and will give brainliest

Andrej [43]

Answer:

Think it is A as 4x20=80.

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3 years ago

A hair salon charges a fixed rate of $25.00 for a haircut and an additional $15 for any other services. Write a function to mode

Lynna [10]

Answer:

Step-by-step explanation:

The function is f(x) = 15x + 25 as 25$ is a fixed rate ( it does not change and is always charged) when 15$ for any other service which can be anything, a costumer can have 0 services other than the hair cut which gives f(0). As for the question, it's asking for haircut, shampoo, highlight, and blow dry so that is 3 other services other than the fixed haircut which means f(3). substitute x=3 in the function to get 15(3) + 25 = 45+25 = 70.

6 0

3 years ago

Read 2 more answers