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Alja [10]
3 years ago
14

Im doing systems of equations and its 2x+2y=16

Mathematics
1 answer:
xeze [42]3 years ago
8 0

Answer:

x=3, y=5 This means the point would be (3,5)

Step-by-step explanation:

As I am unable to see your work, I am unable to tell you what you did wrong, but I hope you can notice what was wrong by comparing your work to mine

We are given the equations

2x+2y=16\\3x-y=4

The first thing we need to do is solve one of them for a variable and use substitution. I chose the second equation

3x-y=4\\\\y=3x-4

Now we can substitute in this equation for y

2x+2y=16\\\\2x+2(3x-4)=16\\\\2x+6x-8=16\\\\8x=24\\\\x=3

Now that we have the value for x, we can plug it into the second equation to easily find y.

y=3x-4\\\\y=3(3)-4\\\\y=9-4\\\\y=5

Finally, we can plug x and y into the first equation in order to check to make sure it works for the other equation

2x+2y=16\\\\2(3)+2(5)=16\\\\6+10=16\\\\16=16

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Help me pls this is very hard for me and plus i gotta turn this in tomorrow
faltersainse [42]

Answer: \Large\boxed{x=40^\circ}

Step-by-step explanation:

<u>Given information</u>

∡ 1 = 90°

∡ 2 = 50°

∡ 3 = x°

Total Angle = 180° <em>(Triangle angle sum theorem)</em>

<u>Given formula</u>

∡ 1 + ∡ 2 + ∡ 3 = Total Angle

<u>Substitute values into the formula</u>

(90) + (50) + (x) = (180)

<u>Combine like terms</u>

140 + x = 180

<u>Subtract 140 on both sides</u>

140 + x - 140 = 180 - 140

\Large\boxed{x=40^\circ}

Hope this helps!! :)

Please let me know if you have any questions

6 0
2 years ago
Some one help me with this.
solniwko [45]

Answer: the last one I think

no sure sorry

Step-by-step explanation:

6 0
3 years ago
When 80% of a is added to the number, the result is 252. What is the number
wariber [46]
Use the equation .8x + x = 252
x is the number, and .8 is the decimal equivalent of 80%.

1.8x = 252

x = 140
6 0
3 years ago
A rectangular pyramid has a length of 14 centimeters, a width of 9 centimeters, and a height of 10 centimeters. explain the effe
klemol [59]
The volume of a rectangular pyramid = 1/3 ×Area×height
=1/3×L×W×H
if the dimensions were doubled
therefore,
V=1/3 × (9×2)×(14×2)×(10×2)
=1/3×18×28×20
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3 0
3 years ago
I tried to solve this problem and can’t can you tell me the answer
Kitty [74]
6/8 because maybe you could try the butterfly strategy and the answer would probably be 6/8
6 0
3 years ago
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