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FinnZ [79.3K]
2 years ago
9

What is the Volume of the square pyramid? (Round to the nearest tenth as needed)

Mathematics
1 answer:
Orlov [11]2 years ago
8 0
<h3><u>given</u><u>:</u></h3>

base= 25 mm

height= 28 mm

<h3><u>to</u><u> </u><u>find</u><u>:</u></h3>

the volume of the square pyramid.

<h3><u>solution</u><u>:</u></h3>

<u>volume =  {a}^{2}  \frac{h}{3}</u>

<u>v =  {25}^{2}  \frac{28}{3}</u>

<u>v = 5833.33333 {mm}^{3}</u>

<u>v = 5833.3 {mm}^{3}</u>

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The price of a cup of coffee was $2.45 yesterday. Today, the price rose to $2.80. Find the percentage increase. Round your answe
Fed [463]
We have that
2.45----------------- > 100%
2.80------------------X
x=2.80*100/2.45=114.29
114.29-100=14.29%-- >14%

the answer is 14%
5 0
4 years ago
Read 2 more answers
The head of the Westlane Cultural Center wants to get a sense of how quickly pledges from donors arrive at the center. It takes
Rzqust [24]

Answer:

95.64% probability that pledges are received within 40 days

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 = 28, \sigma = 7

What is the probability that pledges are received within 40 days

This is the pvalue of Z when X = 40. So

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

Z = \frac{40 - 28}{7}

Z = 1.71

Z = 1.71 has a pvalue of 0.9564

95.64% probability that pledges are received within 40 days

7 0
3 years ago
The population of a town is decreasing at a rate of 3.2% per year. In 2015, there were 14,250 people. What is the first year tha
notsponge [240]
The answer is D
you would set up an equation like this
14,250 x .032
this will give you how much the population is decreasing per year. Which is 456 people per year.
You then take 2015 and find the difference between that number and 2025 and do it with all of the other years too.
For example 2025-2015 is 10 years
You then take 10 x 456 to tell you how much the of population you lost in those 10 years. You will then take that number which is 4,560 and do 14,250-4,560 to get 9,650.
4 0
2 years ago
D'Naisa mixed her favorite shade of orange paint. She had 111 gallon of orange paint and added 222 quarts of yellow paint and 33
natka813 [3]

Answer:

7.5 Quarts

Step-by-step explanation:

D'Naisa mixed the following:

  • 1 gallon of orange paint
  • 2 quarts of yellow paint
  • 3 pints of red paint.

We are to determine in total, the number of quarts of paint that she mixed. this is done by converting each of the volume to quart.

<u>1 gallon of orange paint</u>

  • 1 gallon = 4 Quarts
  • Orange Paint=4 Quarts

<u>3 pints of red paint.</u>

  • 1 pint =0.5 quart
  • 3 Pints =3 X 0.5 Quart
  • =1.5 Quart of red paint

Therefore,

Total Volume of Paint Mixed in quart= Volume of Orange+Yellow+Red

=4+2+1.5

=7.5 Quarts

3 0
3 years ago
Read 2 more answers
What is the solution to 5/8 times 7/9
Amanda [17]

Answer:

35 /72

Step-by-step explanation:

5 /8  ×  7 /9  is  35 /72

all you have to do is multiply

5×7 and 8×9

6 0
3 years ago
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