3 years ago

12. Match the function with the correct parabola.

Mathematics

1 answer:

Mekhanik [1.2K]3 years ago

6 0

Step-by-step explanation:

a x^2/4

b -x^2/4+3

c 4x^2

d -x^2

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X is at most 30 represent as an algebraic inequality

masya89 [10]

Answer:

x ≤ 30

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3 years ago

Please help me solve the first one and show all work

Leto [7]

Acc. to midpoint theorem,

15={(2x+9) + (4x-15)}/2
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3 years ago

When three pipes fill a pool, they can finish in 12 hours. Two of the pipes can finish in 18 hours if they are working together.

ladessa [460]

3 pipes take 12 hours
⇒ In 1 hour, the 3 pipes can fill 1/12 of the pool

2 of the pipes take 18 hours
⇒ in 1 hour, the 2 pipes can fill 1/18 of the pool

In 1 hour, the third pipe alone can fill :

$\dfrac{1}{12} - \dfrac{1}{18} = \dfrac{3}{36} - \dfrac{2}{36} = \dfrac{1}{36} \text { of the pool}$

Time needed :

$1 \div \dfrac{1}{36} = 1 \times 36 = 36 \text { hours}$

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Answer: It will take 36 hours for the third pipe to fill the pool.
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3 years ago

Read 2 more answers