3 years ago

Need help please , algebra sucks

Mathematics

1 answer:

Ksenya-84 [330]3 years ago

5 0

Answer:

0; 9

1; 4

2; 1

3; 0

Step-by-step explanation:

Trust me. It have a B+ in Geometry

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What number is in the tens place of 842.015?

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Answer:

Step-by-step explanation: brainlist :D

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3 years ago

Tickets for an Amtrak train cost $22 for children and $48 for adults. Josie paid $3,278 for a total of 84 tickets. How many chil

timama [110]

Answer:

29 child 55 adult

Step-by-step explanation:

x+y=84

22x+48y=3278

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3 years ago

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3 years ago

Find the value. *<br> if y3 = 30 and z= 10, what is the value of (yz) 12?

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Answer:

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z=10 -------(2) -----(2)

From (1) and (2);

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Step-by-step explanation:

4 0

3 years ago

The mean score on a driving exam for a group of driver's education students is 84 points, with a standard deviation of 4 points.

Anastasy [175]

Using Chebyshev's Theorem, it is found that:

At least 75% of the exam scores fall between 76 and 92.

---------------------------

Chebyshev's Theorem states that the percentage of measures within k standard deviations of the mean is of at least $100(1 - \frac{1}{k^{2}})$ .

With k = 2, that is, within 2 standard deviations of the mean:

$P = 100(1 - \frac{1}{2^{2}})$

$P = 100(1 - \frac{1}{4})$

$P = 100(\frac{3}{4})$

$P = 75$

At least 75% of the measures are within 2 standard deviations of the mean.

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84 + 2(4) = 92

Thus, at least 75% of scores between 76 and 92.

A similar problem is given at brainly.com/question/23612895

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2 years ago