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Eva8 [605]
3 years ago
14

HELP ME WORTH 10

Mathematics
1 answer:
mihalych1998 [28]3 years ago
3 0

Answer:

B

Step-by-step explanation:

the amount of gas in tank changes over time (hours)

pls correct me if I'm wrong hope this helps

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Chris needs to make a 500 L of a 35% acidic solution. He has only two of the acidic solutions available, a 25% solution and a 50
DaniilM [7]
Yes, very fun, not


ok
one way is table or

solutions amount x and y
x+y=500
x=25%
y=50%
0.25x+0.5y=0.35(500)

we have
x+y=500
0.25x+0.5y=0.35(500)
0.25x+0.5y=175
solve

multiply second equation by 100
25x+50y=17500
divide everybody by 25
x+2y=700

now we have
x+y=500
x+2y=700

multiply first equation by -1 and add to second equaiton

-x-y=-500
<u>x+2y=700 +</u>
0x+1y=200

y=200
sub
x+y=500
x+200=500
x=300


300L of the 25% and 200L of the 50%
4 0
3 years ago
Thanks if the answer is right
Shtirlitz [24]
The correct answer to the question is 3/8
6 0
4 years ago
1) Write an equation that includes a variable to show how much money matt started with
12345 [234]
1) m-13=7

2)m-13=7
m-13+13=7+13
m=20
so he had $20 he spent $13 so $7 was left!


BRAINLIEST???
7 0
3 years ago
Riley walked 10 1/2 miles in 2 3/4 hours. At this speed how far does Riley walk in one hour?
tia_tia [17]

Answer:3.8181818181818181818181818181818‬

not spam i swear

Step-by-step explanation:

7 0
3 years ago
Factor: 3x3 + 15x2 +4xy +20y
Sveta_85 [38]

Answer:

The factored version of the given equation is going to be (3x² + 4y)(x + 5)

Step-by-step explanation:

<em>3x³ + 15x² + 4xy + 20y</em>

First, you break down 3x³. You can do this by finding the common factor of 3x³ and 15x². You can add the x to the other parentheses because x times x² equals x³

<em>(3x² + )(x + 5)</em>

Now, we break down 4xy by finding the common factor of 4xy and 20y.

<em>(3x² + 4y)(x + 5)</em>

So, the factored version of the equation above is (3x² + 4y)(x + 5)

6 0
3 years ago
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