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3 years ago

Help on my math homework decimal

1 answer:

8 0

If you want to convert a fraction to a decimal, divide the top by the bottom. Fractions are basically glorified division.

1/2 = 0.5

And you can convert this to a percent by moving the decimal two places to the right. And change it to a % sign.

0.5 => 50%

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What is −35 as a decimal? Enter your answer in the box.

ruslelena [56]

-0.35 would be the correct answer

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3 years ago

BRAINLYST TO THE FRIST PERSON TO ANSWER

alina1380 [7]

Answer:

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Step-by-step explanation:

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3 years ago

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The curve with the equation y=8x^2 + 2/x has one turning point.

anyanavicka [17]

Answer:

(1/2, 6).

Step-by-step explanation:

Turning points in a graph may exist whenever the derivative equals 0. Hence, let’s differentiate and then solve our function.

We have:

$\displaystyle y=8x^2+\frac{2}{x}$

Take the derivative of both sides with respect to x:

$\displaystyle y^\prime=16x-\frac{2}{x^2}$

Simplify:

$\displaystyle y^\prime=\frac{16x^3-2}{x^2}$

We will now set this equal to 0 and solve for x. Hence:

$\displaystyle \begin{aligned} 0&=\frac{16x^3-2}{x^2} \\ 0&=16x^3-2 \\ 2&=16x^3 \\ \frac{1}{8}&=x^3 \\ \frac{1}{2}&=x \end{aligned}$

Hence, the graph turns at x=1/2. This is the x-coordinate.

Then it follows that the y-coordinate will be:

$\displaystyle{\begin{aligned} y&=8(\frac{1}{2})^2+\frac{2}{\frac{1}{2}} \\ y&=8(1/4)+2(2) \\ y&=2+4 \\ y&=6\end{aligned}$

Hence, our coordinate Is (1/2, 6).

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3 years ago

A group consists of fivefive men and fivefive women. ThreeThree people are selected to attend a conference. a. In how many ways

dem82 [27]

a). Three people can be selected from a group of ten in

(10 · 9 · 8) = 720 ways.

(But every group of 3 different people can be selected in 6 different ways. So there are actually only (720/6) = 120 different groups of 3 different people.)

b). Three women can be selected from a group of five women in

(5 · 4 · 3) = 60 ways.

(But every group of 3 different women can be selected in 6 different ways. So there are actually only (60/6) = 10 different groups of 3 different women.)

c). Start with 3 men and 3 women.

The probability of the first selection being a woman is (3/6) = 50% .

Then there are 3 men and 2 women.

The probability of the 2nd selection being a woman is (2/5) = 40% .

Then there are 3 men and 1 woman.

The probability of the 3rd selection being a woman is (1/4) = 25% .

The probability of all 3 selections being women is

(50% ·40% ·25%) = (0.5 ·0.4 ·0.25) = 0.05

The probability that the selected group will consist of all women is 5% .

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3 years ago

How to solve -2(t-4)=10-2t

koban [17]

This is how to solve this problem :)

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3 years ago

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