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Nataly_w [17]
3 years ago
7

Your Turn!

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
5 0
B don’t quote me if I’m wrong
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3x-6y=-12<br> 6x+6y=30 <br> What is the value of x and y
tatuchka [14]

Answer:

(2,3) or x=2 and y=3

Step-by-step explanation:

find x...

3x-6y= -12

3x = 6y-12

x = 2y-4

plug x into the other equation

6(2y-4) + 6y = 30

12y-24 +6y = 30

18y = 54

y = 3

Plug y into an equation to find x

3x-6(3) = -12

3x-18= -12

3x=6

x=2

[Answer] y=3 and x=2 or (2,3)

PLEASE RATE!! I hope this helps!!

If you have any questions comment below

3 0
2 years ago
A ball is made of a plastic sphere covered with a layer of rubber. The plastic sphere has a radius of 18 in., and the ball itsel
Novosadov [1.4K]
Plastic sphere volume=4/3 times pi times rasius^3
4/3 times 3.14 times 18^3=24416.6

rubber ball whole=4/3 times 3.14 times 22^3=44579.6

subtract
44579.6-24416.6=20163


the answer is 20163 in^3


8 0
3 years ago
1. 2(H-8)-h=h-16
podryga [215]

(1) C and (2) D

(1)

distribute the left side of the equation

2h - 16 - h = h - 16 ( simplify left side )

h - 16 = h - 16

Since both sides are equal, any value of h will make the equation true.

Hence there are infinitely many solutions to the equation → C

(2)

3 + 6z = 13 + 6z ( subtract 6z from both sides )

3 = 13 ← not possible

Hence there are no solutions to the equation → D



8 0
3 years ago
PLEASE HELP WITH MATH! 100 PTS
timurjin [86]

Answer:

1.) step No.3 x(2x-5) - (2x-5)

2.) 16 +28i-28i - 49i²

but we know i² = -1

the expression becomes

16 + 49

= 66

6 0
3 years ago
Read 2 more answers
Help me pls only 10points
NeX [460]

y=-7x+8

y=-7x-8

-7x+8=-7x-8

8=-8

x∈∅

B. No solutions

3 0
3 years ago
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