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kumpel [21]
3 years ago
14

the formula F=9/5C + 32 changes a temperature reading from the Celsius scale C to the Fahrenheit scale F. What is the temperatur

e measured in degrees Fahrenheit when the celsius temperature is 10
Mathematics
1 answer:
Free_Kalibri [48]3 years ago
8 0
F=\dfrac{9}{5}C+32\\\\C=10\\\\subtitute\\\\F=\dfrac{9}{5}\cdot10+32=9\cdot2+32=18+32=50\\\\Answer:\boxed{10^oC=50^oF}
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Which expression is equivalent to 10x²y + 25x^2
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5x²(2y + 5)

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10x²y + 25x²

to start we have to express the parts of the function as multiplication

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then we have to see that they have both parts of the sum in common, and what they have in common we get out of common invoice and what is left we add together.

5x²(2y + 5)

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Which sets of three numbers could represent the lengths of the sides of a right triangle? 12, 15, 21
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helppp please ???????? i don’t understand
Vedmedyk [2.9K]

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should be -8

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Without calculating, explain how many decimal places are in the product 0.6 X0.4 X 1.9. Rewrite the expression as the product of
Vladimir79 [104]
There's only one decimal point in the answer. This is quite obvious. Regardless of whether or not your adding, subtracting, dividing, or multiplying, there's really only going to be one decimal, ever. This doesn't change, However, what DOES change are decimal PLACES.

Looking at the problem, you see both .6 and .4 are placed to the right of the decimal, otherwise known as the tenths place (1/10). 

Looking at 1.9, you see you have one number (1) placed to the left of the decimal, the ones place, and another number placed to the right of the decimal (9), in the tenths place. 

Well, this is simple. You can look and see that your multiplying fractions against a whole number, which will of course make this whole number even smaller. By how much though??

Well, you can really tell this by looking at how MANY numbers are behind the decimal. You have .9, .4, and .6

That's 3 numbers behind the decimal place. This may not help you solve the problem itself, but this tells you here (ignoring the 1, that will be taken out immediately while solving and turned into a 0) that you will have 3 numbers placed from the tenths place all the way to the thousandths place.

Basically, this tells you that you'll have three decimal places to the right of the decimal. 

As for rewriting your problem to better show this, that's simple too.

All you have to do is simple multiplication, just in the tenths place. How? You know that 6*4 (referring to .6 and .4) is 24, that means that .6*.4 will be .24

How does this support your answer before? .24 has TWO numbers to the right of the decimal. That's TWO decimal places. With the .9 in 1.9, that's still THREE decimal places to the right of the decimal, and your answer would be the same.

So, here's it re-written.
1.9*.24=X

~Hope this helps!


4 0
3 years ago
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