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Nana76 [90]
3 years ago
9

Someone helppppp!!!!!!

Mathematics
2 answers:
ioda3 years ago
6 0
lol omg I don’t know
TJJO2 years ago
0 0

idk whats the answer figure it out yourself

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Find the solution to the system of equations -3x-9y=18 4x+3y=12
chubhunter [2.5K]

Answer:

(6,-4)

Step-by-step explanation:

-3x-9y = 18 (equation 1)

4x+3y = 12 (equation 2)

multiply equation 2 by 3, and add it to equation 2

-3x-9y = 18

12x+9y = 36

-----------------

X's cancel out

9x = 54

Divide both sides by 9

x = 6

Plug in 6 for x in any of the original equations

(Plugging into Equation 2)

4(6)+3y = 12       Multiply 4(6)

24+3y = 12         Subtract 24 from both sides

3y = -12              Divide 3 on both sides

y = -4

Therefore the solution is (6,-4).

6 0
3 years ago
A manufacturer makes plastic wrap used in food packaging and aims to have a minimum breaking strength of 0.5 kg. If the mean bre
Darina [25.2K]

Answer:

Option D

Step-by-step explanation:

A type I error occurs when you reject the null hypothesis when it is actually true.

The null hypothesis in this case is minimum breaking strength is less than or equal to 0.5.

A type one error would be allowing the production process to continue when the true breaking strength is below specifications.

7 0
3 years ago
What is 3x²-2 if x is -3
Lapatulllka [165]

Answer:

Step-by-step explanation:

3x² -2 =3*(-3)²-2=3*9 - 2

         = 27 - 2

        = 25

8 0
3 years ago
The set of ordeed pairs is??
Grace [21]
I believe the term you want is a 'solution set'

6 0
3 years ago
30(30 – x) = 540 What is the value for x?
madreJ [45]

30(30 – x) = 540

distribute

900 -30x = 540

subtract 900 from each side

-30x = -360

divide by -30

x =12

4 0
3 years ago
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