If h(x) = −4x − 10, find h(−5).

−30
1.25
10
−1

Answers

Answer 1

Answer:

The value of function h (-5) will be;

⇒ h (-5) = 10

What is substitution method?

To find the value of any one of the variables from one equation in terms of the other variable is called the substitution method.

Given that;

The function is,

⇒ h (x) = - 4x - 10

Now,

Here, The function is,

⇒ h (x) = - 4x - 10

So, To find the value of h (-5) as;

Substitute x = - 5 in above equation as;

⇒ h (x) = - 4x - 10

⇒ h (-5) = - 4 × -5 - 10

⇒ h (-5) = 20 - 10

⇒ h (-5) = 10

Thus, The value of function h (-5) will be;

⇒ h (-5) = 10

Learn more about the substitution method visit:

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Answer 2

Answer: $h(x)=-4x-10\n\nh(-5)\to x=-5\n\nsubtitute\ the\ value\ of x=-5\ to\ the\ formula:\n\nh(-5)=-4(-5)-10=20-10=\boxed{10}$

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What is 8% expressed as a fraction in it's simplest form?

Answers

Answer:

$(2)/(25)$

Step-by-step explanation:

Percent means per hundred

$(8)/(100)$ Divide the numerator (top) and denominator (bottom) by 4

$(8)/(100)$ ÷ $(4)/(4)$ = $(2)/(25)$

Simplify the polynomial (3a^2+4a+25) - (2a^2+4a-5)

Answers

Answer:

The polynomial simplified would be a^2 + 30

I hope this helps you:))

P.S. Might I recommend a good online calculator for these types of problems. It's called Symbolab. I use it every day and it's a lifesaver. It shows the step-by-step and has a plethora of different actions like simplifying, inverse, and line.

I need help with this last question and then I'll submit my test! please help in full explanation!

Answers

Answer:

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In a deck of 52 cards, there are 13 different card values, and each card value appears in 4 suits. If you pull one card out of a deck of cards, what is the probability you will draw a 7?A.
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B.
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C.
7/52
D.
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Answers

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A population of middle school students contains 160 sixth graders, 180 seventh graders, and 140 eighth graders. Nine seventh graders were part of a random sample of the population chosen to participate in a survey. For the sample to accurately represent the population, about how many sixth graders should be chosen? A.7 B.8 C.14 D.16

Answers

About 8 sixth graders should be chosen.

What is direct proportion?

Direct proportion is a type of proportionality relationship. For direct proportion, as one value increases, so does the other value and conversely, as one value decreases, so does the other value.

Given that, A population of middle school students contains 160 sixth graders, 180 seventh graders, and 140 eighth graders. Nine seventh graders were part of a random sample of the population chosen to participate in a survey.

We know they are in direct proportion,

Number of sixth graders students = 160

Number of seventh graders students = 180

Number of eighth graders students = 140

If 9 seventh graders were part of a random sample of the population chosen to participate in a survey.

Let the number of sixth graders should be chosen to be 'x'.

Since, there will be direct proportion.

180/9 = 160/x

20 = 160/x

x = 160/20

x = 8

Hence, About 8 sixth graders should be chosen.

For more references on direct proportion, click;

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Answer:B-8

Step-by-step explanation:BECAUSE it was for me

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