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3 years ago

PLEASE EXPLAIN THIS 6th GRADE MATH

Mathematics

1 answer:

8090 [49]3 years ago

8 0

Answer:

$b = l\times w$ to guarantee that both formulas are the same.

Step-by-step explanation:

Dimensionally speaking, the volume is the cube of length. By direct comparison, we find that $l,w,h$ have length units, whereas $b$ have area unit, that is, the square of length.

Hence, $b = l\times w$ to guarantee that both formulas are the same.

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Eugene earns $17 per hour tutoring athletes at Brooklyn University.

Nezavi [6.7K]

Answer:

A) $204 B) $331.50

Step-by-step explanation:

For both scenarios, you just multiply the amount of hours worked by the amount per hour to find the total amount made.

7 0

3 years ago

Peter is saving to buy a camera. The camera costs $50. Peter has already saved $23.25. His plan is to save $4.50 every week to s

Virty [35]

Answer:

m ≥ 6

Here, m is the number of weeks Peter need to save money.

Step-by-step explanation:

The cost of the camera = $50

The amount of money already saved = $23.25

The money saved in 1 week = $4.50

Now, The TOTAL money LEFT to be saved = Total camera cost - Money already saved

= $50 - $23.25 = $26.75

So, there is $26.75 yet to be saved.

Let us assume it takes m weeks to save $26.75.

So, money saved in m weeks = m x ( Money saved in 1 week)

or, $26.75. = m x ( $4.50)

or, m = $26.75 /$4.50 = 5.94

or, m = 5.94 ≈ 6 weeks

So, the money saved in at least 6 weeks = $26.75.

Hence, it would take AT LEAST 6 weeks to save up enough amount to buy the camera which costs $50.

⇒ m ≥ 6

8 0

3 years ago

Need help please thx you

erma4kov [3.2K]

$72.

20% of 60 is 12

$12 + $60 = $72

6 0

3 years ago

Suppose x is a normally distributed random variable with a mean of 22 and a standard deviation of 5. The probability that x is l

MaRussiya [10]

Answer:

The probability that x is less than 9.7 is 0.0069 = 0.69%

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 22, \sigma = 5$

The probability that x is less than 9.7 is _____.

This is the pvalue of Z when X = 9.7. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{9.7 - 22}{5}$

$Z = -2.46$

$Z = -2.46$ has a pvalue of 0.0069

The probability that x is less than 9.7 is 0.0069 = 0.69%

5 0

4 years ago

a landscape company charges $100 plus $15 per hour. another company charges $75 plus $17 per hour. how long is a job that costs

sergij07 [2.7K]

To do this you equate the two and use x for hours.

So your equation looks like this: 100+15x=75+17x. Now move like terms to get 25=2x. The job will be 12.5 hours long to cost the same.

8 0

3 years ago