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2 years ago

Communicative property

1 answer:

7 0

The commutative property is a math rule that says that the order in which w multiply numbers does not change the product

8*2=16 or 2*8=16

So,2*8=8*2

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in a class of 30 student, 12 take the train, 6 walk to school and the rest are driven by parents what is the percentage of this?

Effectus [21]

We learned this in the sixth grade, give me a sec till I get my text book

3 0

3 years ago

Read 2 more answers

At one gym, there is a $12 start-up fee, and after that each month at the gym costs $20. At another gym, it costs $4 to startup,

mart [117]

Answer:

In 4 months the cost of both gyms will be the same.

Step-by-step explanation:

At first we need to model the function to calculate the cost of the 2 gyms.

Slope-intercept equation of linear function

$f(x)=mx+b$

where

$m\rightarrow$ slope of line

$b\rightarrow$ y-intercept

Let linear function to calculate total cost of gym be:

$c(n)=mn+b$

where

$c\rightarrow$ total cost of gym

$m\rightarrow$ cost per month (slope)

$n\rightarrow$ number of months

$b\rightarrow$ start-up fee (y-intercept)

For Gym 1

$m=20$ , $b=12$

$c(n)=20n+12$

For Gym 2

$m=22$ , $b=4$

$c(n)=22n+4$

In order to find the number of months the cost of both gyms will be the same, we need to equate both functions and solve for number of months $(n)$

$20n+12=22n+4$

$\\\textrm{Subtracting 22n from both sides}\\20n-22n+12=22n-22n+4\\-2n+12=4\\\textrm{Subtracting 12 from both sides}\\-2n+12-12=4-12\\-2n=-8\\\textrm{Dividing both sides by -2}\\\frac{-2}{-2}n=\frac{-8}{-2}\\n=4\textrm{ months}$

So,

In 4 months the cost of both gyms will be the same.

5 0

3 years ago

Help please thanks so much

Bas_tet [7]

Answer:

True

Step-by-step explanation:

because is it asking that the hight (y) is in what place in a more spicific wording

7 0

2 years ago

gretchen and Ezia received equal scores on a test made up of multiple choice questions and an essay. Gretchen got 18 multiple ch

timurjin [86]

The multiply choice were worth 4 points.
Gretchen= 18x+19
Ezia= 15x+31

So basically you can enter any number. At first I picked 3 and then I did the math and I got 73 points for Gretchen and 76 points for Ezia.

Then I pick four and then I got 91 points for them both. This is how I got the answer:

18x+19=15x+31
18(4)+19=15(4)+31
72+19=60+31
91=91

5 0

3 years ago

Read 2 more answers

H(x) = {(3,-5), (5.-7), (6,-9), (10, -12), (12,1-16)}<br> Which of the following gives h^-1(x)

Lemur [1.5K]

Answer:

its b

Step-by-step explanation:

because each pair is inversed

7 0

3 years ago