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strojnjashka [21]
3 years ago
15

Jason has 4 gallons of hand sanitizer that contains 25% alcohol. He wants to make a hand sanitizer that contains 50% alcohol. Ho

w many gallons of pure alcohol should he add?
Mathematics
2 answers:
Reptile [31]3 years ago
5 0
4 gallons = 25% alcohol
He wants 50% alcohol, therefore, let’s double the amount.

8 gallons = 50% alcohol

Answer is 4 more gallons should be added to have 50% alcohol
Afina-wow [57]3 years ago
3 0

Answer:

Blah

Step-by-step explanation:

Blah Blah Blah

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Find the value of pq - r/4 when p= -8 and q= -3 and r= 68
andrey2020 [161]

Answer:

7

Step-by-step explanation:

pq - r/4

(-8)(-3) - 68/4

-8 x -3 = 24 (2 negatives equal a positive)

24 - 68/4

68/4 = 17

24-17 = 7

6 0
3 years ago
What is the value of x and the length of segment DE?
Mandarinka [93]

Answer:

Part 1) x=6.6\ units

Part 2) DE=16.2\ units

Step-by-step explanation:

Part 1) Find the value of x

we know that

Triangles CDF and FDE are similar

therefore

The ratio of its corresponding sides is proportional and its corresponding angles are congruent

so

CD/FD=FD/DE

\frac{5}{9}=\frac{9}{2x+3} \\ \\5*(2x+3)=9*9\\ \\10x+15=81\\ \\10x= 81-15\\ \\10x=66\\ \\ x=6.6\ units

Part 2) Find the length of DE

DE=2x+3

substitute the value of x

DE=2(6.6)+3=16.2\ units

8 0
3 years ago
Read 2 more answers
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lidiya [134]
13 yards 

35-15=20
20+12=32
32-35=3
3+10=13
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A high school math teacher is grading her students' tests. The teacher spends about 4 minutes grading each test. The teacher has
gavmur [86]
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If y=4 when x=16, find y when x=6
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