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GalinKa [24]
2 years ago
11

If 23+37=60 does 23+37+9=60+9

Mathematics
1 answer:
Galina-37 [17]2 years ago
6 0

Answer:

30-30-60 triangle

Step-by-step explanation:

45-45-90

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Solve the equation.<br><br> <img src="https://tex.z-dn.net/?f=w%2F3%20%3D%20-9" id="TexFormula1" title="w/3 = -9" alt="w/3 = -9"
kvasek [131]

Answer:

w= -27

Step-by-step explanation:

w/3 = -9

w = 3 * -9 = -27

7 0
3 years ago
How many quarts of pure antifreeze must be added to 8 quarts of a 40% antifreeze solution to obtain a 60% antifreeze solution
anyanavicka [17]

Let <em>q</em> be the number of quarts of pure antifreeze that needs to be added to get the desired solution.

8 quarts of 40% solution contains 0.40 × 8 = 3.2 quarts of antifreeze.

The new solution would have a total volume of 8 + <em>q</em> quarts, and it would contain a total amount of 3.2 + <em>q</em> quarts of antifreeze. You want to end up with a concentration of 60% antifreeze, which means

(3.2 + <em>q</em>) / (8 + <em>q</em>) = 0.60

Solve for <em>q</em> :

3.2 + <em>q</em> = 0.60 (8 + <em>q</em>)

3.2 + <em>q</em> = 4.8 + 0.6<em>q</em>

0.4<em>q</em> = 1.6

<em>q</em> = 4

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Which option shows the following fractions written with a common<br>denominator?<br>8/9 and 3/8​
Mumz [18]

Answer:

72

Step-by-step explanation:

8/9 + 3/8

Multiply the denominators to get the common denominator

9x8 = 72.

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