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Yakvenalex [24]
3 years ago
7

8. A music store sells used CDs for $9. They buy used CDs for $4. You have $50 to

Mathematics
1 answer:
Marat540 [252]3 years ago
7 0

Answer: 9x+4=50

Step-by-step explanation:

In this case, we're looking at how many you can buy, not how many CD's you own.

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The composite figure is made up of two congruent rectangular pyramids joined at their bases. What is the total volume of the com
Sedaia [141]
The volume of a rectangular pyramid is
V = (1/3) A*h
where
A =  the area of the rectangular base
h =  the height

The two pyramids are congruent in volume.
The volume of one pyramid is
(1/3)*(2*7.5)*(6) = 11
The volume of the composite figure is  2*11 = 22

Answer:  22

8 0
3 years ago
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Let p and q be different prime numbers. How many positive factors will (p^2 * q^4)^3 have?
Naily [24]

Answer:

  91

Step-by-step explanation:

p^6×q^12 will have (6+1)(12+1) = 7×13 = 91 positive integer divisors.

7 0
3 years ago
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Justify your reasoning
love history [14]

Answer:

Yes

Step-by-step explanation:

You can conclude that ΔGHI is congruent to ΔKJI, because you can see/interpret that there all the angles are congruent with one another, like with vertical angles (∠GIH and ∠KIJ) and alternate interior angles (∠H and ∠J, ∠G and ∠K).

We also know that we have two congruent sides, since it provides the information that line GK bisects line HJ, meaning that they have been split evenly (they have been split, with even/same lengths).

<u><em>So now we have three congruent angles, and two congruent sides. This is enough to prove that ΔGHI is congruent to ΔKJI,</em></u>

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7 0
3 years ago
Line WX is parallel to line YZ. if m
Nikitich [7]

X = 84

————————————————

5 0
3 years ago
In the picture thank you
dmitriy555 [2]

Answer:

The correct answer is b) 1100 adults and 1400 students.

Step-by-step explanation:

To find this, set up a system of equations in which x is the number of students who attend and y is the number of adults who attend.

First start by creating an equation for money made.

5x + 10y = 18,000

Now write an equation for the amount that attend.

x + y = 2,500

Now multiply the bottom equation by -5 and add the equations together.

-5x - 5y = -12,500

5x + 10y = 18,000

5y = 5,500

y = 1,100

Since this is the number of adults, we can plug into an original equation to find the number of students.

x + y = 2,500

x + 1,100 = 2,500

x = 1,400

5 0
3 years ago
Read 2 more answers
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