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grandymaker [24]
2 years ago
8

Bruce wants to make 50 ml of an alcohol solution with a 12% concentration. He has a 10% alcohol solution and a

Mathematics
1 answer:
Ira Lisetskai [31]2 years ago
3 0

Answer:

0.1x+0.15(50-x)= 50*0.12

Step-by-step explanation:

50 ml of 12% solution has 50*0.12 ml of alcohol

x ml of 10% solution has x*0.1 ml of alcohol

(50-x) ml of 15% solution has (50-x)*0.15 ml of alcohol

The equation to solve is:

  • 0.1x+0.15(50-x)= 50*0.12
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Which equation represents a proportional relationship that has a constant of proportionality equal to –10? y = x minus 10 y = x/
kicyunya [14]

Answer:

y=-10x

Step-by-step explanation:

y=-10x

y/x=-10

6 0
2 years ago
Danica is in the observation area of the sears tower in chicago overlooking lake michigan. She sights two sailboats going due ea
inessss [21]

Answer:

The boats are far apart by 4506.1 feet

Step-by-step explanation:

from the graph attached

i) BC = 1353 \times tan(71\textdegree) = 2761.82 feet

ii) BD  = 1353 \times tan(58\textdegree) =  1744.28 feet

iii) the boats are far apart by = CD = CB + BD = 2761.82 + 1744.28 = 4506.1 feet

3 0
2 years ago
Leslie has 8pencils. She has 9 fewer pencils than Michelle. How many pencils does Michelle have?
sammy [17]

Answer:

<u>Michelle has 17 pencils</u>

Step-by-step explanation:

Number of pencils Leslie has = 8 (She has 9 fewer pencils than Michelle)

Number of pencils Michelle has = 9 more than Leslie

How many pencils does Michelle have?

If Leslie has 8 and she has 9 fewer than Michelle, then:

Michelle has 9 more than Leslie

<u>Michelle has 9 + 8 = 17 pencils</u>

7 0
2 years ago
Stan made 24 sales in 6 hours . what is the ratio of sales to hours?
Furkat [3]
Let s = sale

Let h = hours

The ratio is s to h, which can be written as a fraction as 24/6.
5 0
2 years ago
Read 2 more answers
22 customers are eating dinner at an Italian restaurant. Of the 22 customers, 18 order pizza, 10 order a salad, and 8 order pizz
Ne4ueva [31]

Answer:

Step-by-step explanation:

P(A) = 18/22

P(B) = 10/22

P(A and B) = 8/22

P(A or B) = 18/22 * 10/22 = 0.37

4 0
2 years ago
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