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rosijanka [135]
3 years ago
15

——————————————————————————————

Mathematics
1 answer:
DochEvi [55]3 years ago
7 0
4. 3(3) + 2
(3 x 3) + 2 = 11
5. -(-6) -7
(+)6 -7 = -1
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use the given conditions to write an equation for the line in point slope form passing through (-5,7) and (-8,6)
KengaRu [80]
Point slope form is
y-y1=m(x-x1)
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3 years ago
I WILL GIVE BRAINLIEST IF YOUR ANSWER IS CORRECT
telo118 [61]

Answer:

1. 4.5 g

2. 56.25 g

Step-by-step explanation:

3 % substance solution means :

3 g of dry substance is present in 100 g of solution.

By unitary method:

The weight of dry substance in 1 g of solution = \frac{3}{100}

The weight of dry substance in 150 g of solution = \frac{3}{100}\times150=4.5\ g

Let the weight of solution be w.

8 % solution contains 8 g dry substance in 100 g.

We have to find the weight of the solution(w) which contains 4.5 g of dry substance.

⇒ \frac{8}{100}\times w=4.5\\w=\frac{450}{8}=56.25\ g.

6 0
4 years ago
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