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3 years ago

What is the Pythagorean theorem of 9in and 12in triangle

2 answers:

3 0

15. The formula is a^2+b^2=c^2. So you just plug in the 9 and 12 in the a and b. You get 225. You then take the square root of that and get 15.

EleoNora [17]3 years ago

3 0

Well I need to know wht measure is the long side ?

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A twin-engine airplane has a speed of 300 mi/hr in still air. Suppose this airplane heads directly south and encounters a 50 mi/

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What is the math function of 3x,=y

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3 years ago

3) If it takes 3/29 of the coal for the train to go 1 mile, how much of the coal would it take to go 6.3 miles?

nevsk [136]

Answer:

18.9/29 or 65.17% of the coal.

Step-by-step explanation:

3/29 x 6.3 = 18.9/29

18.9/29 = 0.6517 x 100 = 65.17

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3 years ago

Which is better: having a stock that goes up 30% on Wednesday than drops 20% on Thursday, or a stock

finlep [7]

Step-by-step explanation:

If the stock goes up 30%, it's multiplied by $1.3$ .

The reason is that $x + .3 \times x=1.3\times x$

If the stock goes down 20%, it's multiplied by $0.8$

The reason is that $x - .2 \times x = 0.8 \times x$

If the stock goes down 30%, it's multiplied by $0.7$

The reason is that $x - .3 \times x = 0.7 \times x$

If the stock goes up 40%, it's multiplied by $1.4$ .

The reason is that $x + .4 \times x=1.4\times x$

If you increase it by 30% and then drop it by 20%, it means you are multiplying it by $1.3$ and then multiplying it by $.8$ . In other words:

$1.3 \times 0.8=1.04$

So, the net gain is = .04

Assume the original value = 500

Increase it by 30% and it becomes 650

Decrease 650 by 20% and it becomes 520

So, the net gain = 20

Verification:

$500 \times .04=20$

And

If you drop it by 30% and then increase it by 40%, you are multiplying it by .7 and then multiplying it by 1.4. In other words:

$.7 \times 1.4=0.98$

So, the net loss is = 1 - 0.98 = .02

Assume the original value = 500

Decrease it by 30% and it becomes 350.

increase 350 by 40% and it becomes 490.

So, the net loss is = 10

Verification:

$500 \times .02=10$

Keywords: stock, loss, gain

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5 0

3 years ago