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crimeas [40]
3 years ago
5

Please answer this correctly

Mathematics
2 answers:
Elden [556K]3 years ago
7 0

Answer:

2 minutes and 50 seconds

I think thats the answer, sorry if it's wrong ;;

zysi [14]3 years ago
3 0

Answer:

it's 2.31 mins

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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
Can someone please help me with this problem!
Anna71 [15]

Answer:

11 yards

Step-by-step explanation:

The volume of a cone formula is:

V=\frac{1}{3}\pi r^2 h

Where V is the volume,

r is the radius (half of diameter)

h is the height

Given,

h = 15

V = 475.17

We find the radius (r) first by substituting given values:

V=\frac{1}{3}\pi r^2 h\\475.17=\frac{1}{3}\pi r^2 (15)\\475.17=5\pi r^2\\r^2=30.25\\r=5.5

The radius (r) is 5.5 yards

We need the diameter, which is DOUBLE THE RADIUS, so diameter would be:

Diameter = 5.5 * 2 = 11 yards

8 0
3 years ago
Which of the following services will be provided by a full-service broker but not by a discount broker? I. Research of potential
Goshia [24]
The answer is “A”
•Research of potential investments opportunities
And
•recommendation of investments
5 0
3 years ago
Read 2 more answers
Equations with variables on both sides<br> 22x - 33 = 10x + 10 + 5
Anuta_ua [19.1K]

Answer:

Step-by-step explanation:

Bringing like terms on one side

22x - 10x = 15 + 33

12x = 48

x = 48/12

x = 4

6 0
3 years ago
Susan has a number cube labeled with red, green, yellow, brown, pink, and blue stickers. She will roll the cube 240 times.About
erastova [34]
The answer for this question is A- 40 times
4 0
3 years ago
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