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mestny [16]
4 years ago
15

50r − 6 = 82r − 70. a. r=64 b. r= -64 c.r=2 d.r=-2

Mathematics
1 answer:
lisabon 2012 [21]4 years ago
3 0

Answer:

c

Step-by-step explanation:

Hope this helps.

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Determine the length of the leg of 45°- 45°- 90° triangle with a hypotenuse length of 38.
Mashutka [201]

Answer:Hello! Hopefully your question is.......

19√2

Step-by-step explanation:

Hope This Helps! I'm sorry if i'm wrong. Reach Out to me if you got any questions! Bye!

3 0
3 years ago
How many gallons of a 90% antifreeze solution must be mixed with 90 gallons of 20% antifreeze to get a mixture that is 80% antif
lozanna [386]

Answer:

540

Step-by-step explanation:

Amount of antifreeze in the 90% solution + amount of antifreeze in the 20% solution = amount of antifreeze in the 80% solution

0.90 x + 0.20 (90) = 0.80 (x + 90)

0.90 x + 18 = 0.80 x + 72

0.10 x = 54

x = 540

You need 540 gallons of 90% antifreeze solution.

7 0
3 years ago
The expression 100 + 20m100+20m100, plus, 20, m gives the volume of water in Marcel’s pool (in liters) after Marcel spends mmm m
Nady [450]
All you have to do is you only need to evaluate the given equation which is:100 + 20m where m would be the number of minutes = 5 1/4 minutes
100 + 20 (5 1/4) 
= 100 + 105 
= 205 cubic liters is the volume of water in Marcel’s pool after he fills it.
8 0
3 years ago
X + 2y = 5
Dafna11 [192]
B. 2
if any other number was in there i dont think it would work because its neg
3 0
3 years ago
Read 2 more answers
in right triangle ABC, C is the right angle. Given measure of angle A = 40 degrees and a =6, which of the following are the leng
qaws [65]
Tan 40° = 6 / AC
AC = 6 / tan 40°
AC = 6 / .8391
AC = 7.15

AB² = 6² + 7.15²
AB² = 36 + 51.123
AB² = 87.12
AB = 9.33

 

3 0
3 years ago
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