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m_a_m_a [10]
3 years ago
9

2 3/4 + 12 6/8 = answer

Mathematics
2 answers:
svet-max [94.6K]3 years ago
6 0

Answer:

15 1/2

Step-by-step explanation:

horsena [70]3 years ago
3 0

Answer:

15 1/2

Step-by-step explanation:

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Chase has 3 gallons of a solution that is 30% antifeeze that he wants to use to winterize his car. How much pure antifreeze shou
makvit [3.9K]

Let  x gallons be the amount of pure antifreeze that should be added to the 30% solution to produce a solution that is 65% antifreeze. Then the total amount of antifreeze solution will be x+3 gallons.

There are 30% of pure antifreeze in 3 gallons of solution, then

3 gallons - 100%,

a gallons - 30%,

where a gallons is the amount of pure antifreeze in given solution.

Mathematically,

\dfrac{3}{a}=\dfrac{100}{30},\\ \\a=\dfrac{3\cdot 30}{100}=0.9\ gallons.

Now in new solution there will be x+0.9 gallons of pure antefreeze.

x+3 gallons - 100%,

x+0.9 - 65%

or

\dfrac{x+3}{x+0.9}=\dfrac{100}{65},\\ \\65(x+3)=100(x+0.9),\\ \\65x+195=100x+90,\\ \\35x=105,\\ \\x=3\ gallons.

Answer: he should add 3 gallons of pure antifreeze.

8 0
3 years ago
What is the equation of the following line? Be sure to scroll down first to see all answer options.
Yuri [45]

Answer:

D: y=6x

Step-by-step explanation:

y=mx+b

b=0

y=mx

-3=m * (-1/2)

m=6

y=6x

3 0
3 years ago
Carl went to the store to buy items for his party.He bought two packs for plates for $3.24 and a pack of cups for $5.70. He also
Andre45 [30]

3.24 + 5.70 + 6.17 = 15.11

20.00 - 15.11 = 5.11

He got 5.11$ of change back.

7 0
3 years ago
What’s the variance
creativ13 [48]

A is the right answer

8 0
3 years ago
120 is the same as 394 fewer than Z
SpyIntel [72]

Answer:

z=514

Step-by-step explanation:

120=z-394

+394. +394

514=z

Hope this helps

8 0
3 years ago
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