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3 years ago

Really need the answers

Mathematics

1 answer:

yan [13]3 years ago

6 0

Answer:

Of what???? what question?

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Kelly’s baby brother weighs 7.71 is pounds. Her newborn kitten weighs 0.24 pound. How much more does kelly’s baby brother weigh

sleet_krkn [62]

Answer:

7.47

Step-by-step explanation: 7.71-0.24=7.47 which is how you find how much more the baby weighed than the kitten

3 0

3 years ago

8.5 written as a decimal??

Galina-37 [17]

Its already written as a decimal but it can be 8 1/2

5 0

4 years ago

Read 2 more answers

Calculating cos-1 ( help is gladly appreciated :) )

Alekssandra [29.7K]

Answer:

$\frac{3\pi}{4}$

(Assuming you want your answer in radians)

If you want the answer in degrees just multiply your answer in radians by $\frac{180^\circ}{\pi}$ giving you:

$\frac{3\pi}{4} \cdot \frac{180^\circ}{\pi}=\frac{3(180)}{4}=135^{\circ}$ .

We can do this since $\pi \text{ rad }=180^\circ$ (half the circumference of the unit circle is equivalent to 180 degree rotation).

Step-by-step explanation:

$\cos^{-1}(x)$ is going to output an angle measurement in $[0,\pi]$ .

So we are looking to solve the following equation in that interval:

$\cos(x)=-\frac{\sqrt{2}}{2}$ .

This happens in the second quadrant on the given interval.

The solution to the equation is $\frac{3\pi}{4}$ .

So we are saying that $\cos(\frac{3\pi}{4})=\frac{-\sqrt{2}}{2}$ implies $\cos^{-1}(\frac{-\sqrt{2}}{2})=\frac{3\pi}{4}$ since $\frac{3\pi}{4} \in [0,\pi]$ .

Answer is $\frac{3\pi}{4}$ .

4 0

3 years ago

A school bought 45 band uniforms and 18 musical instruments. If the

Oxana [17]

Answer:

45 times 89

Step-by-step explanation:

The instuments are irrelevant and are only there to distract you.

4 0

3 years ago

Read 2 more answers

Plz I need help with only the perimeter one

Tcecarenko [31]

Answer:

I believe the answer is 25.3

5 0

3 years ago

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