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romanna [79]
3 years ago
6

PLEASE HELP BEEN HERE for 30 minutes. GET A EASY 10 points!

Mathematics
1 answer:
steposvetlana [31]3 years ago
6 0

The answer is -- A. Exactly one solution

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It might be 9 if it's not 6 ...but I can't see how it wouldn't be 6?
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PLEASEE<br> Solve<br> x=6<br> 4x +y =20
Tanya [424]

Answer: y = -4

Step-by-step explanation:

4 (6) + y = 20

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Mr. Black is flying a kite above a field on a 65 foot string. The angle of elevation of the kite is 70 degrees. How high is the
Elan Coil [88]

Answer:

The correct answer is 61.08 foot.

Step-by-step explanation:

Length of the string of the kite, Mr. Black is flying is 65 foot. Thus the length between the kite and Mr. Black is given by 65 foot.

Angle of elevation is 70°.

We need to calculate the height of the kite above Mr. Black's head. The height is given by finding the sine of the angle of elevation.

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6 0
3 years ago
Skydiver is falling about 176 feet per second how many feet per minute
svlad2 [7]
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HELP ME PLEASE!
tensa zangetsu [6.8K]

Answer:

Step-by-step explanation:

26% is (26-20)/(50-20) = 6/30 = 1/5 of the way between 20% and 50%. That means 1/5 of the solution is 50% acid.

50% acid: 1/5 · 100 mL = 20 mL

20% acid: 100 mL -20 mL = 80 mL

Delbert must mix 80 mL of 20% acid and 20 mL of 50% acid.

_____

Maybe you'd like to see an equation. Let x represent the amount of 50% acid required. Then 100-x is the amount of 20% acid needed.  The amount of acid in the mix is ...

  0.50(x) +0.20(100 -x) = 0.26(100)

  (0.50 -0.20)x = (0.26 -0.20)100 . . . . subtract 0.20(100)

  x = (0.26 -0.20)/(0.50 -0.20)×100 = 20

This last expression should look a lot like the one we started with in this answer. It shows you how you can almost write down the answer to mixture problems without a lot of work.

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3 years ago
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