3 years ago

Solve the system of equations by y= 5x + 8 y = 8x + 9

Mathematics

1 answer:

rodikova [14]3 years ago

6 0

You should’ve put a picture to make it easier for us

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What are the domain and range of the function? F(x)=-3/5x^3

Ksivusya [100]

Answer:

A) Domain: All real numbers, excluding zero (-∞, 0) ∪ (0, ∞)

Range: All real numbers, excluding zero (-∞, 0) ∪ (0, ∞)

Step-by-step explanation:

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2 years ago

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A 20 ft. ladder is used against a 15 ft. wall. What is the measure of the angle made by the ladder and the ground (nearest whole

Brrunno [24]

Step-by-step explanation:

Given that,

The length of a ladder, H = 20 feet

The height of the wall, h = 15 ft

We know that,

$\sin\theta=\dfrac{h}{H}$

h is perpendicular and H is hypotenuse

So,

$\sin\theta=\dfrac{15}{20}\\\\\theta=\sin^{-1}(\dfrac{15}{20})\\\\\theta=48.59^{\circ}$

Now using Pythagoras theoerm,

$b=\sqrt{H^2-h^2}\\\\b=\sqrt{20^2-15^2}\\\\b=13.2\ ft$

Hence, the angle made by the ladder and the ground is 48.59° and the ladder is 13.2 feet from the wall on the ground.

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3 years ago

A train leaves Philadelphia at 3 PM. The second train leaves the same city in the same direction at 9 PM. What is the speed of t

Musya8 [376]

This question is lacking vital information, such as when they got there.

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3 years ago

What is the value of f(4) in f(x)=3x-6

vodka [1.7K]

F(4) value is 6.
I believe it would work like this:
f(x) is being turned into f(4), so 4 would equal x. Put 4 into the equation 3x-6, and you get 12-6, which gives you 6. So the value of f(4) is 6. I hope this helps!

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Use a special right triangle to write<br> tan 60° in simplest radical form.

Tems11 [23]

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