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3 years ago

A postal box has a side length of 15.2cm find the area of its base

Mathematics

2 answers:

snow_tiger [21]3 years ago

6 0

15.2 cm x 2

since, it is a box.

so, equals 30.4 cm^2

Hope it's right :)

Oliga [24]3 years ago

3 0

The area of the postal box base is 231.04 cm^2.

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Use the normal distribution of SAT critical reading scores for which the mean is 502 and the standard deviation is 116. Assume t

PSYCHO15rus [73]

Answer:

(a) 93.19%

(b) 267.3

Step-by-step explanation:

The population mean and standard deviation are given as 502 and 116 respectively.

Consider, X be the random variable that shows the SAT critical reading score is normally distributed.

(a) The percent of the SAT verbal scores are less than 675 can be calculated as:

$P(X$

Thus, the required percentage is 93.19%

(b)

The number of SAT verbal scores that are expected to be greater than 575 can be calculated as:

$P(X>575)=P(\frac{x-502}{116}>\frac{575-502}{116}\\P(X>575)=P(Z>\frac{575-502}{116})\\P(X>575)=P(Z>0.6293)\\P(X>575)=0.2673$

So,

Out of 1000 randomly selected SAT verbal scores, 1000(0.2673) = 267.3 are expected to have greater than 575.

8 0

2 years ago

The grid represents 1 whole. Shade the grid to the model 0.3.

Triss [41]

Answer:

where is the grid? I would help if you have more info

8 0

3 years ago

How do you find the tax on a purchase and calculate the final bill? Give an example, then write and solve a number sentence to i

Lerok [7]

If you are buying something that cost $15 and sale tax is 6%, you can calculate final bill trough proportions:
$15:100%=$x:106%
100x=106*15, x=(106*15)/100, x=$15.9 is final bill.

You can also use easier way: $15+0.06*$15=$15.9
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7 0

3 years ago

Solve for m. -5m = -35 m = ?

IgorLugansk [536]

-5m = -35

-5m/-5 = -35/-5

m = 7

Answer: m = 7

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3 years ago

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Olenka [21]

I don't know the meaning of 'square' in your question.but i think you had better make it more clear .

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3 years ago