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
geniusboy [140]
2 years ago
12

30. Find the volume of the figure below. 21 km 15 km 19 km 9 km

Mathematics
1 answer:
Kazeer [188]2 years ago
8 0

Answer:

See below ....none of your answer choices  'fit'

Step-by-step explanation:

Break it into two pieces....a triangular prism and a square pyramid

prism volume = (area) * length

                      ( 1/2 base * height)     *  length  

     Use pythagorean theorem to find height of triangular prism = 12

                            1/2 * 12 * 9   * 21 = 1134 km^3

Pyramid volume = 1/3 base * height =

               =   1/3  *   (9*21)    *    7 = 441 km^3

Summed = <u>1575 km ^3  </u>        

You might be interested in
1. You are rolling a pair of dice. What's the probability of getting different numbers on both dice?
GaryK [48]

Answer:

  • 5/6

Step-by-step explanation:

<u>Total outcomes:</u>

  • 6*6 = 36

<u>Outcomes with same numbers on both dice:</u>

  • 6

<u>Outcomes with different numbers on both dice:</u>

  • 36 - 6 = 30

<u>Probability of different numbers on both dice:</u>

  • 30/36 = 5/6
7 0
3 years ago
Which of the following expressions are equivalent? Justify your reasoning,
marshall27 [118]

Answer:

B and D

Step-by-step explanation:

B:

Anything to a negative power means that it is 1/that to the positive power.

E.g. x^-1 = 1/x^1

In other words, anything to the power of a negative switches sides of a fraction (i.e. if in numerator moves to denominator and vice versa.)

1/x^-1 = 1/1/x^1 which is just equal to x, because there are x number of 1/xs in one (1/x * x =1) Therefore Option B is equal to just x.

D: (assuming the first given term is x^1/3 and not X1/3 (?) Correct me if I'm wrong).

x^1/3 * x^1/3 * x^1/3 is also equal to just x.

This is because when multiplying together terms with the same base (x in this case) the exponents just add together, so:

x^1/3 * x^1/3 * x^1/3 = x^(1/3 +1/3 +1/3) = x^1 = x.

Therefore B and D are equivalent because they both equal x.

Hope this helped!

7 0
3 years ago
Translate to an algebraic expression.
beks73 [17]
The answer is d=63/z
6 0
3 years ago
A triangle has a perimeter of 10a + 3b + 12 and has sides of length 3a + 8 and 5a + b what is the length of the third side ?
RideAnS [48]

Answer:

  2a +2b +4

Step-by-step explanation:

The perimeter is the sum of the lengths of the three sides. If x represents the length of the third side, then ...

  (3a +8) +(5a +b) +x = (10a +3b +12)

Subtracting from the equation everything on the left side that is not x, we get ...

  x = (10a +3b +12) -(3a +8) -(5a +b)

  = a(10 -3 -5) +b(3 -1) +(12 -8)

  = 2a +2b +4

The length of the third side is 2a +2b +4.

5 0
3 years ago
PLEASEE HELPPPP!!! ahhhhh
Agata [3.3K]

(1,5)

To find this, do the opposite of how you got to (4,5).

Move right 2 units instead of left.

Move left 5 units instead of right.

Now, your on the point (1,5).

To check this, do what they said. (Move left 2 units and right 5 units) If its correct you end up on (4,5)

8 0
3 years ago
Other questions:
  • How can you tell if radicals are like radicals
    11·2 answers
  • I don't understand e. Please help
    14·1 answer
  • Find the equation of a line that goes through the points (8, -9) and (-4, 15).
    11·1 answer
  • What is the solution to the following equation? x+(-21)=8
    15·2 answers
  • A motorboat sets out in the direction N 77 degrees 48 minutes E. THe speed of the boat in still water is 31.7 mph. If the curren
    12·1 answer
  • Complete the linear function rule for the line that passes through the points of the ordered pairs listed in the table.
    5·1 answer
  • Reggie is asked to graph this system of equations:
    11·2 answers
  • Given OR=OQ. prove&lt;3=&lt;5
    14·1 answer
  • Can help my little bro
    10·1 answer
  • Which table shows a proportional relationship between x and y?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!