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3 years ago

10

Solve the system by substitution!

1 answer:

irga5000 [103]3 years ago

3 0

When solving by substation the answer would be: X= 1 , y= 5

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How much of the 8% solution should we use to make 100g of a 3% solution?

sp2606 [1]

Suppose x grams of 8% solution should be mixed to make 100 g of 3% solution.
here we shall have:
the amount of 3% solution in the 100 g will be:
3/100*100=3 grams
the the equation will be, 8% of what quantity becomes 3g?
(8/100)*x=3
hence solving for x we shall have:
0.08x=3
x=3/0.08
x= 37.8 grams
The implication of this is that, when you have 37.5 grams of 8% solution, that will contain 3 of pure chemical and hence when you add more solvent on top of 37.5 g until you reach 100g, that will be 3% solution.

8 0

3 years ago

Read 2 more answers

Find the exact distance between the midpoint of the line segment from point A to the

zimovet [89]

Answer:

your smart and i

Step-by-step explanation:

know it dont use this app

6 0

3 years ago

There is a charge of $0.18 per mile for extra miles. if tim drives 500 extra miles, how much more will those cost him?

Norma-Jean [14]

Charge for 1 mile = 0.18

So, for 500 miles, it would be: 500 * 0.18 = 90

In short, Your Answer would be: $90

Hope this helps!

7 0

3 years ago

Read 2 more answers

Andre has 45 sheets of paper and needs to buy more. A store has 5 reams of paper, and each

maks197457 [2]

Answer:

The practical domain of the function is the set of all integers from 1 to 5, inclusive.

Step-by-step explanation:

It is given the initial number of sheets of paper is 45.

A store has 5 reams of paper, and each ream contains 500 sheets of paper.

Let f(x) represent the number of sheets after purchasing x reams.

$f(x)=500x+45$

Domain is the set of input. In other words domain is the set of x-values.

Since number of reams can not be a negative or fraction value, therefore, the domain of the function is {1,2,3,4,5}.

Andre needs to buy more sheets, so number of reams of paper can not be 0.

Thus, the practical domain of the function is the set of all integers from 1 to 5, inclusive.

8 0

3 years ago

Help please! can someone also help me understand the formula?

meriva

Answer:

<h2>195 yd^2</h2>

solution,

Area of rhombus:

$\frac{1}{2} \times d1 \times d2 \\ = \frac{1}{2} \times (7.5 + 7.5) \times (13 + 13) \\ = \frac{1}{2} \times 15 \times 26 \\ = 195 \: {yd}^{2}$

Hope this helps...

Good luck on your assignment...

8 0

3 years ago