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Sergeeva-Olga [200]
3 years ago
12

What is 8x-7(x+3)+5x

Mathematics
2 answers:
jek_recluse [69]3 years ago
5 0

Answer:

6x-21

Step-by-step explanation:

First distribute

8x-7(x+3)+5x

8x-7x-21+5x

Then combine like terms

8x-7x-21+5x

6x-21

OLga [1]3 years ago
4 0

Answer:

I'm not 100% sure love, but I think it would be 12x.

Step-by-step explanation:

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Find f(1/4)<br><br> if f(x)=4x^2-2/3x<br><br>please guys explain it to me I cant understand it ​
Jet001 [13]

Answer:

f(1/4) = 1/12

Step-by-step explanation:

f(x) = 4x^2 - 2/3 x is a function. The name of the function is simply the letter f. It tells you a rule. f(x) is the same as y.

It is the same as having

y = 4x^2 - 2/3 x

For each value of x you are given, you can calculate a corresponding value of y. Instead of calling y, y, we call y "f(x)" which is a way of showing that this relation is a function.

If you were given

y = 4x^2 - 2/3 x and were asked to find the value of y when x = 1/4, what would you do?

You would substitute 1/4 for x in the expression 4x^2 - 2/3 x, and you'd find the value of y.

Being asked to find f(1/4) for function f(x) = 4x^2 - 2/3 x means exactly the same. It means what is the value of the function when x = 1/4? What is the y value corresponding to an x value of 1/4?

Let's calculate it:

f(x) = 4x^2 - 2/3 x

To show we are evaluating the function at an x value of 1/4, we use the notation f(1/4). f(1/4) means find the value of y for function f when x = 1/4. We replace x with 1/4 and do the math.

f(1/4) = 4(1/4)^2 - (2/3)(1/4)

f(1/4) = 4(1/16) - 2/12

f(1/4) = 4/16 - 2/12

f(1/4) = 1/4 - 2/12

f(1/4) = 3/12 - 2/12

f(1/4) = 1/12

6 0
3 years ago
According to the U.S. Department of Agriculture in 2011, the cost of raising a child from birth to eighteen years of age is appr
My name is Ann [436]

Answer:

$234,900

Step-by-step explanation:

Quick Search on the internet

3 0
1 year ago
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Write the word sentence as an equation. Then solve the equation.
Anvisha [2.4K]

Answer: <em>n </em>-<em> 4 = -15</em>

<em>n </em>= -11

Step-by-step explanation:

If -15 is the same as 4 less than <em>n, </em>that means that <em>n </em>- 4 = -15

Then you add 4 to each side of the equation to get <em>n </em>by itself. (-15 + 4 = -11)

That step leaves you with <em>n</em> = -11

7 0
2 years ago
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The total of two numbers is 5,271. if one number is 1,938, what is the third number?
hammer [34]

Answer:

The other number is 3333.

Step-by-step explanation:

This is really easy, just subtract 1,938 from 5,271. (5271 - 1938 = 3333)

4 0
2 years ago
Math 2 5.3 Triangle worksheet 1-8
AnnZ [28]

1) m<DCB = <D + <C + <B

180 = 25 + 90 + <C  (Angle Sum Property)

180 = 115 + <C

180 - 115 = <C

65 = <C

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