3 years ago

How many gallons of pure water must be added to 10 gal of 30% salt water to make a solution that is 25% salt water?

Mathematics

1 answer:

dezoksy [38]3 years ago

6 0

Answer:

2 gallons must be added Hope this helps!

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Can somebody help me it will mean a lot

tamaranim1 [39]

Angle- side- angle, the triangles are connected and have a line between them (side), & you can see the 2 separate angles amongst them.

7 0

2 years ago

An 85-foot rope from the top of a tree house to the ground forms a 45 degree angle of elevation from the ground. How high is the

Feliz [49]

Answer:

$\boxed{h=60.1\ ft }$

Step-by-step explanation:

<u>Right Triangles </u>

They have a right angle (90°) and a longer side called the hypotenuse opposite to the right angle. The legs and the hyponetuse form two angles that must sum 90°, and they comply:

$\displaystyle sin\ \alpha=\frac {opp-leg}{hypotenuse}$

Where opp-leg is the opposite leg to $\alpha.$

The rope from the top of a tree house is 85-foot long. It's the hypotenuse (L) of the triangle it forms with the ground and the tree. The angle of 45° is opposite to the height of the tree (h).

$\displaystyle sin\ \alpha=\frac {h}{L}$