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Alex_Xolod [135]
3 years ago
6

Sam is is mixing chemicals during a chemistry lab. She adds a 60% acid solution to 10 mL of a solution that is 10% acid. How muc

h of the acid solution should Sam add to make a solution that is 50% acid? Please show work.
Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
6 0
Without any other number values I believe it is just 40%
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Which is bigger 7/8 or 13/16
salantis [7]
To compare these fractions, bring them to the same denominator. Expand the fractions to bring them to the common denominator (LCM):

7/8 = (2 * 7) / (2 * 8) = 14/16
13/16 = (1 * 13) / (1 * 16) = 13/16

Same denominator fractions sorted ascending:

13/16 < 14/16

Initial fractions in ascending order:

13/16 < 7/8
8 0
4 years ago
Read 2 more answers
the measure of an angle is fifty nine times the measure of its supplementary angle. What is the measure of each angle
Dimas [21]

9514 1404 393

Answer:

  177°, 3°

Step-by-step explanation:

If the smaller angle is s, then the sum of the two angles is ...

  s + 59s = 180°

  s = 180°/60 = 3° . . . . . divide by the coefficient of s

  59s = 177° . . . . . . . . . find the larger angle

The two angles are 177° and 3°.

7 0
3 years ago
Plz answer this questoin! will give brainliest!
Rufina [12.5K]

Answer:

25,

8:5

4:3

Step-by-step explanation:

you have to model it as a system of equations.

first, we know there are a total of 65 children, boys and girls. so

65 = b + g

we also know there are 15 more boys than girls so

b = g + 15

now, we can plug the second equation into the first to get

65 = (g+15)+g

so

2g = 50, g = 25

if g = 25, b must = 40, because it is g+15.

the ratio will be 40 boys to 25 girls. 40:25 or 8:5 if you simplify.

if there are 5 more girls, g = 25+5 = 30, so the ratio is 40:30 or 4:3.

3 0
4 years ago
Read 2 more answers
The front of your garage needs painting. Everything on the front of the garage must be painted except the door. The door is 1.5
Pani-rosa [81]

Answer:

the answer is d

Step-by-step explanation:

3 0
3 years ago
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When an article is sold for Rs 23, there is profit.
Svet_ta [14]

Answer:

Cost price = R.S 20

Sales price = R.S 22

Step-by-step explanation:

Given:

Sales price of an article = R.S 23

Profit = 15%

Find:

Cost price

Sales price if profit is 10%

Computation:

Profit% = [(Sales price - Cost price) / Cost price]100

15 = [(23-cp)/cp]100

15cp = 2,300 - 100cp

115cp = 2,300

Cost price = R.S 20

Sales price if profit is 10%

Sales price = Cost price + Profit

Sales price = 20 + 10%[20]

Sales price = 20 + 2

Sales price = R.S 22

3 0
3 years ago
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