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Natasha_Volkova [10]
3 years ago
6

Hellooooooooo im just bored and just to get yall some pointss whats : 3x4= ?

Mathematics
2 answers:
andrew-mc [135]3 years ago
4 0

Answer:

thank youuuuuuuu<uuu thank you

tamaranim1 [39]3 years ago
4 0

Answer:

3×4=12

I hope this helps and thanks for the points

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How many gallons of a 30% salt solution must be added to 40 gallons of a 12% salt solution to obtain a 20% solution?
Sati [7]
Let’s call the number of gallons of 30% solution “x”. If we mix together 40 gallons and x gallons of solution, we’re going to come out with a total of 40 + x gallons of that 20% solution. Mathematically, this is

40(12%) + x(30%) = (40 + x)(20%)

With the percents as decimals:

40(0.12) + x(0.3) = (40 + x)(0.2)

Simplifying, we have:

4.8 + 0.3x = 8 + 0.2x

Collecting the x terms on one side and the constants on the other:

0.1x = 3.2

And multiplying both sides by 10 to find x:

x = 32

So, you’ll need 32 gallons of 30% solution to yield 40 + 32 = 72 gallons of 20% solution.
7 0
3 years ago
Solve the system of equations - 8x - 5y = -13 and - 4x – 5y = 11 by<br> combining the equations.
Citrus2011 [14]

Answer:

(6,-7)

Step-by-step explanation:

subtract them:

-8x - 5y = -13

-4x - 5y = 11

you get

-4x = -24

so x = 6

plug x into the second equation:

-24 - 5y = 11

-5y = 35

y = -7

so your solution is (6,-7).

4 0
3 years ago
Read 2 more answers
The equation ý-x+4 is graphed below. Which equation would intersect this line at the point (4, 6)?
mel-nik [20]

Answer:

Your answer would be A. y=6!

Step-by-step explanation:

Have a nice day! :)

7 0
3 years ago
Select Is a Function or Is not a Function to correctly classify each relation
Gemiola [76]

Answer:

no

yes

no

yes

Step-by-step explanation:

x input repeats - 3

x input doesn't repeat

x input repeats -4

x input doesn't repeat

6 0
3 years ago
What model for distributive properties Shows that 3(2x+4) is equivalent to 6x+12
Anestetic [448]
3(2x+6)
Will give you 6x+12
6 0
3 years ago
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