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2 years ago

Explain why my calculator gives an error when you enter cos^-1 (5/4)

Mathematics

2 answers:

Gemiola [76]2 years ago

5 0

Answer:

see explanation

Step-by-step explanation:

To obtain a solution for $cos^{-1}$ (x) , then

- 1 ≤ x ≤ 1

That is the value of x cannot be greater than 1 or less than - 1

here x = $\frac{5}{4}$ = 1.25 which is greater than 1 , thus calculator will return ' error'

Gnoma [55]2 years ago

4 0

Step-by-step explanation:

because the is no answer for that in the calculator

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Consider the inequality-5(x+7)<-10 write an inequality representing the solution for x

GrogVix [38]

Answer:

Step-by-step explanation:

-5(x + 7) < -10 use the distributive property a(b + c) = ab + ac

(-5)(x) + (-5)(7) < -10

-5x - 35 < -10 add 35 to both sides

-5x < 25 change the signs

5x > - 25 divide both sides by 5

x > -5

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2 years ago

How fast is the apple traveling when the kinetic energy is 32 joules?

Daniel [21]

Answer

The apple is traveling at 8 meters per second

Explanation

We have the equation that relates the kinetic energy with the velocty:

$K=\frac{v^2}{2}$

Then, to find thevelocity when the apple has 32, we replace K = 32 j:

$\begin{gathered} 32=\frac{v^2}{2} \\ 32\cdot2=v^2 \\ 64=v^2 \\ v=\sqrt{64}=8 \\ \end{gathered}$

Thus, the speed of the apple is 8meter per second

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10 months ago

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3 years ago

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Fantom [35]

Amplitude: 1/4 (= |a|)
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3 years ago

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Answer:

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Step-by-step explanation:

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