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stellarik [79]
3 years ago
9

What is the value of x? Enter your answer in the box. x =

Mathematics
2 answers:
brilliants [131]3 years ago
4 0
First set up a proportion because they are similar triangles:
9/3x-20 = (72+9)/(56+3x-20)
9/3x-20 = 81/3x+36
9(3x+36) = 81(3x-20)
27x+324 = 243x-1620
1944 = 216x
x = 9
MArishka [77]3 years ago
3 0

Answer:

Step-by-step explanation:

9 cm/72 cm=3x-20/56

3x-20=56/8. (9÷72=1/8)

3x-20=7

3x=7+20

3x=27

x=27/3

x=9

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3 years ago
If 35 gms of pure drug are contained in 150 mls, how many grams are contained in 75 mls?
Leviafan [203]

Answer:

17.5

Step-by-step explanation:

The ratio of "pure drug" to liquid is 35:150

Therefore to evaluate for 75 mls we get the ratio 75/2150 or simply 1/2

we can then multiply 35 by the ratio 1/2

35/2=17.5

State the answer

In 75 mls there are 17.5 grams of pure drug

8 0
3 years ago
If rain falls at a unit rate of 3 inches per hour, how much rain will accumulate after 24 hours?
natta225 [31]

Answer:

The answer is 72 inches in 24 hours.

Step-by-step explanation:

If 3 inches tall per hour, and you need to find the amount of rain in 24 hours, you just need to multiply the number of inches per hour by the number of hours required (24 hours):

3×24=72 inches

6 0
3 years ago
Read 2 more answers
What is 15.75 rounded to the whole number​
victus00 [196]

Answer:

C. 16

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
A patio has an area of 50. the width is 3/4 of the length. what is the length?
Zielflug [23.3K]

Answer:

37.5

Step-by-step explanation:

12.5x3=37.5

I hope i helped


5 0
3 years ago
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