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3 years ago

Use ratio language to describe the relationship of any two things you can think of.

Mathematics

1 answer:

miss Akunina [59]3 years ago

3 0

Answer:

Step-by-step explanation:

the recipe called for 3 cups of flour and 4 cups of sugar. That means there is 3/4 cups of flour for each cup of sugar.

She drove 60 miles in 3hrs. This means she drove 60/3 = 20 miles per hr.

hope this helps?

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A jeweler needs 50 ounces of a 21% silver alloy. Find the amount of a 12% silver alloy and the amount of a 24% silver alloy he s

sergij07 [2.7K]

Answer:

12.5 ounces of 12% alloy
37.5 ounces of 24% alloy

Step-by-step explanation:

Let x represent the amount (in ounces) of 24% alloy in the mix. Then the amount of 12% alloy is (50 -x). The amount of silver in the mix is ...

24%·x + 12%·(50 -x) = 21%·50

12x = 450 . . . . . . simplify, multiply by 100 (to eliminate %), and subtract 600

x = 37.5 . . . . . . . divide by 12

The jeweler needs to mix 37.5 ounces of 24% silver alloy with 12.5 ounces of 12% silver alloy to make 50 ounces of 21% silver alloy.

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3 years ago

What are the roots of the polynomial equation x4+x2=4x3-12x+12? use a graphing calculator and a system of equations. round no in

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3 years ago

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You enter a relay race. To start, you must run 20 yards to Checkpoint A. You then must turn and run 12 yards to Checkpoint B. La

Anarel [89]

Distance to checkpoint A from starting line = 20 yards.

Then from A to B distance = 12 yards.

Let us take starting point C.

So, it would make a right triangle.

We have AB = 12, AC = 20, we need to find BC, that is Hypotenuse of the right triangle.

According to Pythagoras theorem:

$BC^2 = AB^2+AC^2$

$BC^2 = 12^2+20^2$

$BC^2 = 144 +400 = 544$

$BC= \sqrt{544}$

BC = 23.32.

<h3>Therefore, 23.32 yards is the distance from Checkpoint B to the starting line.</h3>

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