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Arturiano [62]
3 years ago
8

Y= -2x 7x-8y=-23 Solve the system using the substitution method

Mathematics
1 answer:
devlian [24]3 years ago
3 0

Answer:

x=-1 and y=2

Step-by-step explanation:

substitute -2x for y in 7x-8y=-23

7x-8y=-23

7x-8-2x=-23

23x=-23

x=-1

substitute -1 for x in y=-2x

y=-2x

y=(-2)(-1)

y=2

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What does 5 2/3 - 8 5/6 equal?
goblinko [34]

5 2/3 = 17/3 = 34/6

8 5/6 = 53/6

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7 0
3 years ago
Solve for x in the diagram below
MrRissso [65]

Answer:

x=20 degrees

Step-by-step explanation:

because this is a supplementary angle, you add everything and set it equal to 180 degrees. so it would be x + 100 + 3x = 180. combine like terms to get 100 + 4x = 180. subtract 100 from both sides to get 4x = 80. divide by 4 on both sides to isolate the x and your final answer is 20. hope this helped! good luck in school xoxo

8 0
3 years ago
Cody and Brad bought pizza for the class party. Cody bought 12 pizzas for $15 each.
tankabanditka [31]

Answer:

brad paid more

Step-by-step explanation:

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and 12/8=1.50

so brad paid more on pizza

3 0
3 years ago
Read 2 more answers
21 - 3y = -5
slavikrds [6]

Answer:

A. No

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
PLEASE HELP AND SHOW WORK IF YOU CAN​
Murljashka [212]

Answer:

c) XY > RS

= true

Step-by-step explanation:

Firstly know the meaning of each sign given

> means <u>is greater than</u>

= means <u>is equal to</u>

a)XZ > ST

XZ = 8

ST = 11 - greater

= false

b) XY = RS

Due to the angles presented, we conclude that the greater the angle, the longer the unmeasured line.

XY is longer than RS

= false

c) XY > RS

= true

d) RS > XY

RS is shorter than XY hence not greater.

= false

3 0
3 years ago
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