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3 years ago

Plss helpppppppppppppp

Mathematics

1 answer:

Aloiza [94]3 years ago

4 0

The mean and therefor the answer is 61

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PLEASE HELP: Picture is below

vodka [1.7K]

Answer:

f(g(x)) = 14x³ - 3

Step-by-step explanation:

Given:

f(x) = 7x² - 3
g(x) = $\sqrt{2x^3}$

To find f(g(x)), substitute x in f(x) with the value of g(x):

f(g(x)) = $7(\sqrt{2x^3})^2 - 3$ = 7(2x³) - 3 = 14x³ - 3

This represents the amount of money she earns every hour, where x is the number of hours.

6 0

3 years ago

a 9ft ladder is placed 4.5 feet from the base of a wall. How high up will the ladder reach? Round to the nearest hundredth.

spin [16.1K]

Answer:

$\huge\boxed{7.79 \ \text{feet}}$

Step-by-step explanation:

We know that we have a 9 foot long ladder resting upon a wall, with an unknown height, but the ladder is 4.5 feet away from the wall.

This can be represented as a triangle, where x is the unknown side.

| \

x | \ 9

| \

|_____\

4.5

We can use The Pythagorean Theorem to find the value of x. The theorem states that $a^2+b^2=c^2$ , where a and b are the lengths of the legs and c is the length of the hypotenuse.

However, we already know the hypotenuse and one leg. Therefore we can substitute inside the equation to find the missing value.

$a^2 + 4.5^2 = 9^2\\\\a^2 + 20.25 = 81\\\\a^2 = 60.75\\\\a \approx 7.79$

Hope this helped!

7 0

3 years ago

THIS IS TEST TO SEE HOW IT WORKS What is 1+4?

Luba_88 [7]

5.... this is a weird question..

8 0

4 years ago

5. Earl runs 75 meters in 30 seconds. How many meters does Earl run per second?

Rudik [331]

Answer:

He runs 2.5 meters per second

Step-by-step explanation:

all you do is divide 75/30 and the answer is 2.5.

8 0

4 years ago

The pumpkin patch is open day.if it sells 2,750 pounds of pumpkin each day, about how many pounds does it sell in 7 days?

siniylev [52]

So...each day the patch sells 2750lb.
in 2 days it would double... so you have to multiply
2750*7 = 19250lb

5 0

3 years ago