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2 years ago

Think about how to use the interactive tool to form an expression equivalent to –x + ( –3x) + 12 – 9.

Mathematics

2 answers:

Yuliya22 [10]2 years ago

5 0

Answer:

its a or -4x

Step-by-step explanation:

just did the test

zhuklara [117]2 years ago

3 0

Answer: a

Step-by-step explanation:

i did the question

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What is the slope of the line that contains these points?<br> (-1,10) (0,18) (1,26) (2,34)

-BARSIC- [3]

The slope of the line that contains these points (-1 , 10) , (0 , 18) , (1 , 26) ,

(2 , 34) is 8

Step-by-step explanation:

You can find the slope of a line from any two points lie on it

The formula of the slope is $m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$
$(x_{1},y_{1})$ and $(x_{2},y_{2})$ are two points lie on it

∵ A line contains these points (-1 , 10) , (0 , 18) , (1 , 26) , (2 , 34)

- To find the slope of the line chose any to points

∵ Points (0 , 18) and (1 , 26) lie on the line

∴ $x_{1}$ = 0 and $x_{2}$ = 1

∴ $y_{1}$ = 18 and $y_{2}$ = 26

- Substitute these values in the formula of the slope above

∵ $m=\frac{26-18}{1-0}$

∴ $m=\frac{8}{1}$

∴ m = 8

The slope of the line that contains these points (-1 , 10) , (0 , 18) , (1 , 26) , (2 , 34) is 8

Learn more:

You can learn more about the slope of a line in brainly.com/question/12954015

#LearnwithBrainly

7 0

3 years ago

Camryn earns $198.60 per week. She works 15 hours each week. How much does Camryn earn per hour? P.S this is a unit rate questio

Musya8 [376]

Okay, so in order to find how much she earns per hour you'll take the salary she earns each week ($198.60) and divide that to how many hours she works every week (15 hours). It'll look like: 198.60 / 15= $13.24 per hour.

4 0

3 years ago

Tonia and trinny are twins. Their friends give them identical cakes for their birthday. Tonia eats 1/8 of her cake and trinny ea

Nikitich [7]

Answer:

$\frac{7}{12}$ of the cake

Step-by-step explanation:

add $\frac{1}{8}$ and $\frac{1}{6}$ to see the total amount of cake eaten.

a. find the common denominator: 8 x 3 = 24 and 6 x 4 = 24

b. multiply accordingly to get the correct numerator: $\frac{3}{24}$ + $\frac{4}{24}$

c. add: $\frac{3}{24}$ + $\frac{4}{24}$ = $\frac{7}{24}$

subtract found value from total to find left over cake.

a. 24 - 7 = 14

simplify.

a. $\frac{14}{24}$ = $\frac{7}{12}$

You are left with $\frac{7}{12}$ of the cake.

8 0

3 years ago

Are these two lines parallel, perpendicular or neither?<br> y = -1/3x - 5<br> y = 1/3x + 2

Thepotemich [5.8K]

Parallel because they have the same slope

8 0

3 years ago

2. Tyler can type 50 words per minute. He needs to finish typing his 500-word

nikdorinn [45]

Answer:

9.5 minute

Step-by-step explanation:

500 - 25 = 50x

x = $\frac{475}{50}$

x = 9.5 minute

6 0

3 years ago