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borishaifa [10]
3 years ago
15

Translations and transformations mastery test

Mathematics
2 answers:
allsm [11]3 years ago
5 0
I don’t know I think b
Angelina_Jolie [31]3 years ago
3 0

Answer:

so ....where is the question?

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Solve the system of linear equations. <br> −8x+5y=26<br> 9x−3y=−3
Sloan [31]

Answer: x = 3 and y = 10

Step-by-step explanation:

-8x + 5y = 26     .................. equation 1

9x - 3y = -3          ................ equation 2

Solving the system of linear equations by elimination method.

The means we have to make the coefficient of one of the variable the same in order to eliminate the variable first.

Let us eliminate the variable y first , this means we will multiply equation 1 by 3 and multiply equation 2 by 5. Doing this , we have

-24x + 15y = 78      ............. equation 3

45x - 15y = -15     ................ equation 4

Now that we have the same coefficient , we have to check their signs , if the have the same signs , we will subtract , that is , if both are having positive signs , we will subtract , if both have negative signs , we will also subtract but if their signs differ we will add. Following this rule and considering the equations above , the coefficients of y have different signs , so we will add equation 3 and equation 4 , so we have:

21x = 63

x = 63/21

x = 3

Substitute x = 3 into equation 1 or equation 2 to get the value of y , using equation 2 , we have

9x - 3y = -3

9(3) - 3y = -3

27 - 3y = -3

27+3 = 3y

30 = 3y

30/3 = y

Therefore y = 10

Therefore : x = 3 and y = 10

8 0
3 years ago
How many seconds are in 9 minutes?
Setler [38]

Answer:

540

Step-by-step explanation:

9 times 60 equals 540

3 0
3 years ago
Read 2 more answers
15 is 6% of what number?<br> A) 200 <br> B) 250 <br> C) 300 <br> D) 350
DerKrebs [107]

Answer:

250

Step-by-step explanation:

6 0
3 years ago
HELP ASAP ILL GIVE BRAINLIST
Minchanka [31]

Answer:

Horizontal line

Step-by-step explanation:

uehdjd

3 0
3 years ago
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Deepak is a landscaper who charges $30 for each job he does plus an additional $15 for each hour he works. He only accepts jobs
s344n2d4d5 [400]

Hey there! I'm happy to help!

The only thing we have to do is solve our inequality to find the answer!

30+15x ≥ 90

We subtract 30 from both sides.

15x ≥ 60

Finally, we divide both sides by four.

x ≥ 4

Therefore, Deepak can only accept jobs that last 4 or more hours.

I hope that this helps! Have a wonderful day!

3 0
3 years ago
Read 2 more answers
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