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Maru [420]
2 years ago
5

A scientist needs 60 liters of a 40% solution of alcohol.He has a 30% solution and a 60% solution available.How many liters of t

he 30% solution and how many liters of the 60% solution should he mix to make the 40% solution?
Mathematics
1 answer:
stich3 [128]2 years ago
8 0

Answer:

He should mix 25 liters of the 30% solution, and 35 liters of 60% solution.

Step-by-step explanation:

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Problem solving with inequalities
anzhelika [568]

Option D:

15c ≤ 200

Solution:

Let c be the number of cases of tea bags.

Cost of each tea bag = 15 gold coins

Total gold coins Mad have = 200

<u>Set up an inequality:</u>

Cost of c tea bags = 15 × c = 15c

Mad can buy tea bags at most 200 gold coins.

(At most 200 means 200 is the greater value)

15 × c ≤ 200

15c ≤ 200

Hence option D is the correct answer.

8 0
3 years ago
find all the solutions of sec theta - 2 =0. It says use "or" as necessary and gives an example of kpi.
swat32
Sec t (theta) - 2 = 0
sec t = 2
1/ cos t = 2
cos t =  1/2
Answer:
t = π / 3 + 2 k π ,  or :  t = 5 π / 3 + 2 kπ,
k ∈ Z
5 0
3 years ago
The perimeter of this kite is 108 cm.
taurus [48]

Answer:

n is equal to 26

Step-by-step explanation:

Equation: n+ n + (n+2) +(n+2) = 108

so: 2n + 2(n+2) = 108

2n + 2n + 4 = 108

4n + 4 = 108

4n = 108 - 4

4n = 104

n = 104/4

n = 26

6 0
2 years ago
A basketball player makes 2 out of 5 free throws.what is his shooting percentage​
Bezzdna [24]

Answer: your answer is 40%

Fraction Percent

1/5 20%

2/5 40%

3/5 60%

4/5 80%

6 0
3 years ago
9. Emma is choosing new tile for the floor in his dining room, which is in the
ddd [48]

Answer:

a. f=3.50x

b. $350

c. $787.50

Step-by-step explanation:

7 0
3 years ago
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