3 years ago

True or false: you flip the sign every time you multiply or divide when you're solving an

Mathematics

1 answer:

larisa [96]3 years ago

5 0

False. You only flip when the number you are multiplying/dividing is negative.

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finding the amplitude, period, asymptotes, reflections, vertical shifts, and phase shifts of trig equations

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3 years ago

jar contains 51 coins which are either quarters or nickels. total value of jar is 5.15. how many of each type of coin do they ha

docker41 [41]

I believe there are 20 quarters and 3 nickels.....

Total value of the jar is $5.15.....

Quarters are worth 25 cents
And nickels are worth 5 cents.

First you know that there are 4 quarters in a dollar.
You have 5 dollars so you do 4 x 5 = 20

So five dollars ($5.00) is 20 quarters.
And you still have 15 cents left.

Because quarters are 25 cents the rest are nickels.

Nickels are worth 5 cents so you'd do 5 x 3 = 15.

15 cents!

Add all this together and get $5.15.

So your answer is

There are 20 quarters and 3 nickels in the jar.

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3 years ago

Derive the equation of the parabola with a focus at (–5, 5) and a directrix of y = -1.

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( x + 5 )^2 = - ( y - 5 )

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3 years ago

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There are 5 red, 5 green and 5 yellow jelly beans in a jar. At least how many would need to take out of the jar without looking

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