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valentinak56 [21]
3 years ago
6

I NEED HELPPP!!!!! 9th grade math

Mathematics
2 answers:
Luden [163]3 years ago
7 0
It is is y = -3
Good luck!!
ehidna [41]3 years ago
6 0

Answer:

x = -3

Step-by-step explanation:

In this situation, x is always -3.

So, the equation is x = -3

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Help please!!!!! ASAPPPPPPPPPP
crimeas [40]
The answer is
-5/8+9/2=3 7/8 or 31/8
so you should put 31 in the green box

4 0
2 years ago
How many ml of a 20% acid mixture and a 80% acid mixture should be mixed to get 120ml of a 35% acid mixture?
shutvik [7]

Answer:

Volume of Mixture A =90 ml

Volume of Mixture B =30 ml

Step-by-step explanation:

Let say, Mixture A + Mixture B = Mixture C

Volume of Mixture A is x

Volume of Mixture B is y

So, Volume of Mixture C is x+y = 120 ml

Now, Acid contain in Mixture A is 20% =0.2x

Acid contain in Mixture B is 80% =0.8y

Also, Acid contain in Mixture C is 35% =(0.35)(x+y) = 0.35×120=42

Now, we know that,

Acid contain of Mixture A + Acid contain of Mixture B=Acid contain of Mixture C

∴ 0.2x+0.8y=42

∴ 2x+8y=420

We get two linear equations

2x+8y=420 and x+y = 120

Solving above equation...

∴ x=120-y

Replacing x value in 2x+8y=420

∴ 2(120-y)+8y=420

∴ 240-2y+8y=420

∴ 6y=180

∴ y=30

Replacing y value in any equation

∴ x=120-y=120-30=90

∴ x=90

Thus,

Volume of Mixture A is x=90 ml

Volume of Mixture B is y=30 ml

3 0
3 years ago
Which graph represents a function?<br> X
gayaneshka [121]
If you added more context then I would probably answer your question
5 0
2 years ago
The graph below shows the time Andrea spent reading one day. Write a few sentences to describe the relationship between the time
Alex777 [14]

Answer:

Step-by-step explanation:

Well, there are several  relationships you can describe.  As time increases how does number of pages  react?  Like does it increase or decrease.  Is it always increasing or decreasing by the same amount?  If it's not all the same how do different parts look different.  

There aren't any actual numbers, so you can't say specifically how they relate, like you can't say she read 5 pages a minute or something.

3 0
2 years ago
Read 2 more answers
Mika wants to buy two types of cookies. The vanilla cookies cost $4 per box and the peanut butter cookies cost $6 per box. She w
ollegr [7]

Answer:

A & B

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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