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Mice21 [21]
3 years ago
11

Evaluate 3x for x = −2, x = 1, and x = 3. Question 18 options: A) 1∕3, 0, 9 B) 1∕9, 3, 27 C) 9, 3, 27 D) 1∕9, 9, 27

Mathematics
1 answer:
timofeeve [1]3 years ago
7 0

Answer:

D

Step-by-step explanation:

Took it on Ed but it might be different

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1. Simplify the problem below -3x^-2​
frozen [14]

Answer: -3/x^2

Step-by-step explanation:

Hope this helps

4 0
3 years ago
Read 2 more answers
Is the number -<img src="https://tex.z-dn.net/?f=%5Cfrac%7B13%7D%7B1%7D" id="TexFormula1" title="\frac{13}{1}" alt="\frac{13}{1}
Alenkasestr [34]

Answer:

13/1 = 13 is the only number integer that divides into it, but all numbers that can be fractions are rational numbers, whether decimal or prime they all can be rational.

Step-by-step explanation:

4 0
3 years ago
-14(3a+6)=12(6-4a)+12 and steps please
Sunny_sXe [5.5K]

Answer:

In the given equation -14(3a+6)=12(6-4a)+12 the value of a is 28

Step-by-step explanation:

Given equation is -14(3a+6)=12(6-4a)+12

To simplify the given equation:

-14(3a+6)=12(6-4a)+12

Taking all terms to one side

-14(3a+6)-12(6-4a)-12=0

-[14(3a+6)+12(6-4a)+12]=0

Now dividing by negative sign on the above equation we get

14(3a+6)+12(6-4a)+12=0 (using distributive property)

42a+84+72-48a+12=0 ( adding the like terms )

-6a+168=0

-6a=-168

6a=168

a=\frac{168}{6}

Therefore a=28

Therefore in the given equation -14(3a+6)=12(6-4a)+12 the value of a is 28

8 0
3 years ago
In​ 2012, a health insurance plan for a​ 35-year-old and his or her spouse costs ​$301 per month. That rate increased to ​$430 p
katrin2010 [14]

Answer: See explanation

Step-by-step explanation:

Let the cost for insuring the applicant = a.

Let the cost for insuring the spouse = b

Let the cost for insuring the first child= c

Let the cost for insuring the second child = d

A 35-year-old health insurance plan and that of his or her spouse costs ​$301 per month. This means that:

a + b = $301.

That rate increased to ​$430 per month if a child were included. This means the cost of a child will be:

= $430 - $301

= $129

The rate increased to $538 per month if two children were included. This means the cost for the second child will be:

= $538 - $430

= $108

The rate dropped to ​$269 per month for just the applicant and one child. His will be the cost of the applicant and a single child. This can be written as:

a + $129 = $269

a = $269 - $129

a = $140

Since a + b = $301

$140 + b = $301

b = $301 - $140

b = $161

Applicant = $140

The spouse = $161

The first​ child = $129

The second child = $108

3 0
2 years ago
From 99° to 70°f what is the percent decrease
SSSSS [86.1K]

Answer:

should be -29.29 %

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
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