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GenaCL600 [577]
3 years ago
11

Can someone please help ?

Mathematics
1 answer:
nexus9112 [7]3 years ago
6 0
There are many ways to solve this. I think the easiest way for this one is to add the equations up.

\:  \:  \:  \:  \: -5x+ 2y = 6 \\  +  \: \:   \: 10x    - 2y =  - 16 \\  -  -  -  -  -  -  -  -  -  -  \\  \:  \:  \:  \:  \:  \: 5x =  - 10
The you solve that, now that y is gone. You get x=2.

Now plug in x into one of the original equations.

- 5(2)  + 2y = 6 \\  - 10 + 2y = 6
Finish solving, and you get y=8.

The answer is (2,8)
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Trigonometry, please help thank you
alina1380 [7]

Step-by-step explanation:

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8 0
3 years ago
Helppp meee pleaseeee!!!!
never [62]

Answer:

each triangle should weigh 2.5!

Step-by-step explanation:

each sides are equal. the side with only squares weighs 25. the squares on the opposite side weigh 10. 25-10 is equal to 15. there are 6 triangles. 15 divided by six gets you 2.5

8 0
3 years ago
Read 2 more answers
The length of a rectangle is four times the width. The perimeter of the rectangle is 45 inches. Write a system of equations that
Nady [450]

Step-by-step explanation:

2×length + 2×width = 45

length = 4×width

now, we are using the second equation (a variable identity) in the first equation

2×4×width + 2×width = 45

8×width + 2×width = 45

10×width = 45

width = 45/10 = 4.5 in

length = 4×width = 4×4.5 = 18 in

the area of the rectangle is

length × width = 18 × 4.5 = 81 in²

8 0
2 years ago
Which of the following integers is less than -23?<br> a) o<br> b) -13<br> c) 13<br> d) -25
blondinia [14]

Answer:

i think d) -25 is answer

Step-by-step explanation:

good luck

7 0
3 years ago
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Use the zero product property to find the equation x^2 + x - 30 = 12
Tom [10]

x=6, add thirty to both sides 6 squared is 36, plus six is 42

4 0
4 years ago
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