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Ne4ueva [31]
4 years ago
10

Need help on question 13 with work and answer Can you guys check if 12 and 14 are also correct plz

Mathematics
1 answer:
fiasKO [112]4 years ago
6 0
13.
so out of the pool houses, how many have a hot tub
21/38=0.552=55% aprox

answer is 55%

12 is correct

14 technically, it 0 and -3, -3 could also be correct if you count the negativer root
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A furniture store pays a wholesale price for a mattress.
WITCHER [35]

Answer:

Step-by-step explanation:

Part A:

Given that the mattress is sold for 50% off of the retail price, let the retail price of the mattress be x, then

50% of x = 1200

⇒ 0.5x = 1200

⇒ x = 1200 / 0.5 = 2400

Therefore, the retail price of the mattress, before the discount is $2,400.

Part B:

Given that the store marks up the retail price to 150% of the wholesale price. Let the whole sale price be p, then

(100% + 150%) of p = 2400

250% of p = 2400

2.5p = 2400

p = 2400 / 2.5 = 960.

Therefore, the wholesale price, before the markup was $960

7 0
3 years ago
Write 2 equivalent expressions that illustrate the associative property of addition
Katen [24]
(5 + 2) + 1 = 5 + (2 + 1)
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4 years ago
C. A missile is launched along a path determined by the equation f (x) = -2X2 +
eduard

Answer:

the answer is a.

Step-by-step explanation:

8 0
3 years ago
Please make sure this is right I only have 6 questions :)
Morgarella [4.7K]

Answer:

4

Step-by-step explanation:

3 0
3 years ago
Which of the following is not a polynomial identity?
olga_2 [115]

Answer:

Option B

Step-by-step explanation:

Option A

a² - b² = (a+ b)(a - b)

It's a polynomial identity.

Option B

a³ + b³ = (a - b)(a² - ab + b²)

It's not a polynomial identity.

Because the identity is,

a³ + b³ = (a + b)(a² - ab + b²)

Option C

a³ - b³ = (a - b)(a² + ab + b²)

It's a polynomial identity.

Option D

(a²+ b²)(c² + d²) = (ac - bd)² + (ad + bc)²

                         = a²c² - 2abcd + b²d² + a²d² + b²c² + 2abcd

                         = a²c² + b²c² + b²d² + a²d²

                         = c²(a² + b²) + d²(a² + b²)

                         = (a²+ b²)(c² + d²)

Therefore, it's a polynomial identity.

Option B will be the answer.

7 0
3 years ago
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