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Alekssandra [29.7K]
4 years ago
13

Least to greatest 2.8 2 3/4 -2.2 recurrin

Mathematics
1 answer:
Kazeer [188]4 years ago
6 0
-2.2, 3/4, 2, 2.8 Hope this helps:)
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What is the value of x in the equation 0.2(x + 1) + 0.5x = –0.3(x – 4)
almond37 [142]
0.2x+0.2+0.5x=-0.3x+1.2
0.7x+0.3x=1.2-0.2
x=1
That's your answer.
8 0
4 years ago
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Is there exam and answers x+7 ​
vlada-n [284]

Answer:

8

Step-by-step explanation:

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3 years ago
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On a test with a population mean of 75 and standard deviation equal to 16, if the scores are normally distributed, what percenta
sashaice [31]

Answer:

Percentage of scores that fall between 70 and 80 = 24.34%

Step-by-step explanation:

We are given a test with a population mean of 75 and standard deviation equal to 16.

Let X = Percentage of scores

Since, X ~ N(\mu,\sigma^{2})

The z probability is given by;

           Z = \frac{X-\mu}{\sigma} ~ N(0,1)    where, \mu = 75  and  \sigma = 16

So, P(70 < X < 80) = P(X < 80) - P(X <= 70)

P(X < 80) = P( \frac{X-\mu}{\sigma} < \frac{80-75}{16} ) = P(Z < 0.31) = 0.62172

P(X <= 70) = P( \frac{X-\mu}{\sigma} < \frac{70-75}{16} ) = P(Z < -0.31) = 1 - P(Z <= 0.31)

                                              = 1 - 0.62172 = 0.37828

Therefore, P(70 < X < 80) = 0.62172 - 0.37828 = 0.24344 or 24.34%

6 0
4 years ago
Jamal filled his gas tank and then use 7/16 of the tank for traveling to visit his grandfather. He then used 1/3 of the remainin
Lisa [10]

Answer:

\frac{3}{8}

Step-by-step explanation:

Let's tackle each statement at a time:

<em>Jamal filled his gas tank of which he used \frac{7}{16}.</em>

We need to express the unit (a gas tank) in terms of fractions so that we can substract 1-\frac{7}{16}.

The denominator of the second term of our substraction is 16, so we can express the first term as \frac{16}{16}. Now that we have the same denominator in both terms, we can proceed to define 16 as a common denominator and rewrite the expression as: \frac{16-7}{16}, which gives us a result of \frac{9}{16}, which is what Jamal has left after visiting his grandfather. This expression cannot be simplified anymore.

<em>Then, he used \frac{1}{3} of the remaining \frac{9}{16}.</em>

We express it as if he had \frac{2}{3} of the remaining <em>\frac{9}{16}.</em>:

\frac{9}{16} *\frac{2}{3}

We multiply the terms:

\frac{18}{48}

And simplify:

\frac{9}{24}

\frac{3}{8}

So, at the end, Jamal has \frac{3}{8} of his tank left.

6 0
3 years ago
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A popcorn container is the shape of an inverted cone. It is 9 inches tall, and the circular opening has a diameter of 4 inches.
stealth61 [152]

Answer:

<u>The volume of the container is 37.7 cubic inches and the equation is π * r² * h/3, where r is the radius and h is the height of the cone.</u>

Step-by-step explanation:

Let's recall that the formula for finding out the volume of a cone is:

Volume of a cone = π * r² * h/3

Replacing with the real values, we have:

diameter = 4 inches ⇒ radius = 2 inches

Volume of a cone = 3.1416 * 2² * 9/3

Volume of a cone = 3.1416 * 4 * 3

Volume of a cone = 37.7 cubic inches

5 0
3 years ago
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