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Anuta_ua [19.1K]
3 years ago
15

An online DVD rental site charges a monthly membership fee of $10,

Mathematics
1 answer:
Taya2010 [7]3 years ago
5 0

Answer:

666

Step-by-step explanation:

You might be interested in
Please help. Thank you!
katrin2010 [14]

Answer:

3a. ⇒ 2700 cm³

3b. ⇒ 72,900 cm³

3c. ⇒ 27

Step-by-step explanation:

3a.

∵ The model in a shape of square pyramid

∴ Its volume = base area × height

∵ Base shaped square with side length 15 cm

∴ Area of base = 15 × 15 = 225 cm²

∵ The model height = 12 cm

∴ She needs = 225 × 12 = 2,700 cm³ of plaster

3b.

∵ Each dimension in the actual stage = 3 times the model

∴ The side of the square base = 15 × 3 = 45 cm

∴ The height = 12 × 3 = 36 cm

∴ The area of the base = 45 × 45 = 2,025 cm²

∴ She needs = 2025 × 36 = 72,900 cm³ of plaster

3c.

∵ Each length in the actual stage is 3 times the model

∴ The volume of the actual stage = (3)³ the volume of the model

∴ The volume of the actual stage = 27 the volume of the model

<em>To check your answer:</em>

Volume actual ÷ Volume model = 72,900 ÷ 2700 = 27

3 0
3 years ago
How would you simplify the expression represented by the diagram below?
luda_lava [24]
6 + 3c is the correct answer
3 0
2 years ago
Read 2 more answers
Solve the system of equations below.
trapecia [35]

Answer:

A) x + y = 8

B) 3x + 2y = 21

We multiply A) by -2

A) -2x -2y  = -16 Then we add this to

B) 3x + 2y = 21

x = 5

y = 3

Second answer is correct

Step-by-step explanation:

5 0
3 years ago
Which of the following represents the factored form of f(x) = x3 − 64x?
sp2606 [1]

Answer:

x(x + 8)(x - 8)

Step-by-step explanation:

Given

x³ - 64x ← factor out x from each term

= x(x² - 64) ← x² - 64 is a difference of squares

= x(x + 8)(x - 8) ← in factored form

8 0
2 years ago
Help me, please !!!!
ehidna [41]
20 and 3/4 is 20.75
20 and 7/8 is 20.875
20 and 1/5 is 20.2
20 and 4/5 is 20.8
7 0
2 years ago
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