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3 years ago

Not sure what to do.

Mathematics

1 answer:

Art [367]3 years ago

6 0

They want you to associate the number with how many boxes.

9 students watched cartoons and there are 3 boxes
9/3 = 3, this means the key is 3. 1 Box = 3 students

For sports, 6 students watched, 6/3 = 2 Boxes

Movies, 3/3 = 1 Box

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Rewrite 40 1/4 as a decimal

Radda [10]

40.25 is 40 1/4 as a decimal

8 0

3 years ago

In 1990, the GDP of Canada was $680 billion as measured in Canadian dollars, and the exchange rate was that $1 Canadian was wort

LUCKY_DIMON [66]

Answer:

cool fact! but whats the question?

Step-by-step explanation:

hope this helps

4 0

3 years ago

Rewrite in simplest terms: (10x-5)-(8x-6)

fredd [130]

Answer:

2x-1

Step-by-step explanation:

(10x-5)-(8x+6)

10x-8x-5+6

2x-1

4 0

2 years ago

The number of accidents per week at a hazardous intersection varies with mean 2.2 and standard deviation 1.4. This distribution

ankoles [38]

Answer:

a) Normal Distribution

b) 0.146

c) 0.070

Step-by-step explanation:

We are given the following information in the question:

The number of accidents per week at a hazardous intersection varies with mean 2.2 and standard deviation 1.4

a) $\bar{x}$ : mean number of accidents per week at the intersection during a year (52 weeks)

According to central limit theorem, as the sample size becomes larger, the distribution of mean approaches a normal distribution.

Since we have a large sample, the approximate distribution of $\bar{x}$ is a normal distribution with

$\text{Mean} = 2.2\\\text{Standard Deviation} = \displaystyle\frac{\sigma}{\sqrt{n}} = \frac{1.4}{\sqrt{52}} = 0.19$

b) P(mean is less than 2)

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(x > 610)

$P( \bar{x} < 2) = P( z < \displaystyle\frac{2 - 2.2}{0.19}) = P(z < -1.052)$

Calculation the value from standard normal z table, we have,

$P(\bar{x} < 2) = 0.146$

c) P(fewer than 100 accidents at the intersection in a year)

P(x < 100)

$P( \bar{x} < \frac{100}{52}) =P(\bar{x} < 1.92) =P(z < \displaystyle\frac{1.92 - 2.2}{0.19}) = P(z < -1.473)$

Calculation the value from standard normal z table, we have,

$P(x$

7 0

3 years ago

Rewrite the following expression X^9/7

KonstantinChe [14]

Answer:

$x\sqrt[7]{x^{2} }$ (D)

Step-by-step explanation:

Given: $x^{\frac{9}{7} }$

To find: Simplify the given expression

Solution: Simplyfying, we get,

$x^{\frac{9}{7} } =x^{\frac{7}{7} +\frac{2}{7} }$

$=x^{1} *x^{\frac{2}{7} } \\=x*x^{\frac{2}{7} } \\=x=\sqrt[7]{x^{2} }$

Therefore, $x\frac{9}{7}$ can be written as $x\sqrt[7]{x^{2} }$

5 0

2 years ago