1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Natali [406]
2 years ago
10

Find the volume. Show work!!

Mathematics
1 answer:
hodyreva [135]2 years ago
3 0

Step-by-step explanation:

this is a combined object :

there is the basic block at the bottom (21×21×17), and there is a pyramid on top of it.

so, we need to calculate the volume of both parts and add them for the total volume.

the volume of the block is, as mentioned :

21 × 21 × 17 (length×width×height) = 7,497 ft³

the volume of a pyramid is

length×width×height/3

which is in our case

21 × 21 × 9 / 3 = 21 × 21 × 3 = 1,323 ft³

so, the total volume is

7,497 + 1,323 = 8,820 ft³

You might be interested in
Sady students took a math test. The percentages of students who scored an A, B, C, or D are displayed in the circle graph,
valina [46]
Bob the builder was happy with this
8 0
3 years ago
Divide and check the answer with formula 252 ÷2​
aliina [53]
Answer:
126

One two six

8 0
2 years ago
Read 2 more answers
Which of the following estimates at a 95% confidence level most likely comes from a small sample?
dusya [7]
<span>The <u>correct answer</u> is:

A) 60% ± 18%.

Explanation:

In a confidence interval, the margin of error is given by z*(</span>σ/√n<span>), where </span>σ<span> is the standard deviation and n is the sample size.

First we <u>find the value of z</u>:

We want a 95% confidence level; 95% = 95/100 = 0.95.

To find the z-score, we first subtract this from 1:
1-0.95 = 0.05.

Divide by 2:
0.05/2 = 0.025.

Subtract from 1 again:
1-0.025 = 0.975.

Using a z-table, we find this value in the middle of the table. The z-score that is associated with this value is 1.96.

Back to our formula for margin of error, we have 1.96(</span>σ<span>/</span>√n<span>). The larger n, the sample size, is, the larger its square root is. When we divide by a larger number, our answer is smaller; this gives us a smaller margin of error.

This means that if we had a small sample size, we would divide by a smaller number, making our margin of error larger. The largest margin of error we have in this question is 18%, so this is our correct answer.</span>
7 0
3 years ago
Of the following sets, which numbers in {1, 2, 3, 4, 5} make the inequality 5x + 2 &gt; 12 true?
kicyunya [14]

Answer:

3,4,5

Step-by-step explanation:

try every one

4 0
3 years ago
Find the distance between the two points in simplest radical form.<br> (7,-1) and (9,-9)
storchak [24]

Answer:

\sqrt{68}

Step-by-step explanation:

(7 , -1) = (x1 , y1)

(9 , -9) = (x2 , y2)

distance formula = \sqrt{(x2 - x1)^2 + (y2 - y1)^2}

=\sqrt{(9 - 7)^2 + (-9 - (-1))^2}

=\sqrt{2^2 + (-9 + 1)^2}

=\sqrt{4 + (-8)^2}

=\sqrt{4 + 64}

=\sqrt{68}

7 0
3 years ago
Read 2 more answers
Other questions:
  • A(n)=-5*2^n-1 i dont know the geometric sequences i need the first, fourth and eighth terms of the sequence
    6·1 answer
  • I understand how to find out slope but I need help finding out what to do after that
    15·1 answer
  • <img src="https://tex.z-dn.net/?f=c-15%3D31%5Btex%5D%5Csqrt%5Bn%5D%7Bx%7D%20%5Csqrt%5Bn%5D%7Bx%7D" id="TexFormula1" title="c-15=
    6·2 answers
  • Growing up, Lisa lived in a tiny country village. When she left for college, the population was 840 people. Lisa recently heard
    10·2 answers
  • Of the students on the track team, 1twelve do the high jump. Of those students 1fourth alsobdo of the long jump. What fraction o
    6·2 answers
  • I need help on this question
    14·1 answer
  • A 12.5 oz bag of Doritos costs $3.79. A 3 oz bag costs $1.00. What is the difference in unit rates?
    5·2 answers
  • I will give brainliest!
    14·1 answer
  • the present age of the father is twice HD old is the age of its own three years hence if two years hence the age of the father w
    7·1 answer
  • What are the domain and range of y=cot x? Select one choice for domain
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!