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3 years ago

Can anybody help me with this equation?? :/

Mathematics

2 answers:

Ganezh [65]3 years ago

6 0

Answer:

Step-by-step explanation:

A full rotation takes 360°. From the picture, it would take 5 rotations to achieve such full degree rotation. Hence, each bit of rotation covers 360°÷5=72°

avanturin [10]3 years ago

6 0

is the object moving? There’s no way for us to know how much it rotates if we don’t see where it was and where it ends up. But I can help you find the answer.

Basically what you need to do is look at how much the object rotates. You want to look at the squares or the pentagon to see how much the object is rotating.

360 degrees is one full spin, we know what that looks like. If the object rotated 360 degrees then all the points on the hexagon end up where they began (same with squares). But I’m guessing it doesn’t do a full spin since all the answers are leas than 360 degrees.

What if the spin is smaller than 360 degrees? Use proportions based on the shapes. For example, every time a point on the pentagon ends up rotating to where the point next to it was, that’s a 360 degrees / 5 = 72 degree change. I calculated that by taking a full spin and dividing it by 5 angles that the pentagon has.

Does that make sense?

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The cost of 8 muffins and 2 quarts of milk is $18. The cost of 3 muffins and and one quart of milk is $7.50. How much does 1 muf

LUCKY_DIMON [66]

Hi, hope this helps :)

Feel free to ask me if you do not understand. I used the elimination method.

4 0

3 years ago

In converting 9 inches to yards, what unit (omit the number) would you place

Anna35 [415]

Answer:

9 inches are 1/4 or 0.25 yards and we used inches in the numerator and yards in the denominator for our ratio.

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

1 yard = 36 inches

2. In converting 9 inches to yards, what unit (omit the number) would you place in the numerator of your ratio?

This is the ratio for calculating the answer:

36/1 = 9/x

36x = 9 *1

36x = 9

x = 9/36

x = 1/4 or 0.25 yards

9 inches are 1/4 or 0.25 yards and we used inches in the numerator and yards in the denominator for our ratio.

7 0

3 years ago

What's the answer? Idk it bc I'm stupid and I don't feel like doing it

padilas [110]

The initial height is 4
after 2 seconds, the height is 8
Brainliest answer, please?

6 0

2 years ago

Which of the following trigonometric ratios are correct?

den301095 [7]

Hi there! In this problem, you should have the knowledge of three basic Trigonometric Ratio.

sinA = opposite/hypotenuse
cosA = adjacent/hypotenuse
tanA = opposite/adjacent

Now that we know three basic ratio. Let's check each choices!

sin50° = d/c

This choice is wrong because we focus on the 50° angle. When we focus on 50°, sin50° should be d/x and not d/c.

sin50° = c/x

This choice is also wrong because in ratio, it's cos50° that adjacent/hypotenuse.

tan50° = d/c

This choice is correct! As ratio states, tanA = opposite/adjacent.

tan50° = x/c

This choice is wrong. x/c is a reciprocal of cosine which is 1/cos. We call the reciprocal of cosine as secant or sec in short.

cos50° = x/d

This choice is wrong as x/d is a reciprocal of sine which is 1/sin. We call the reciprocal of sine as cosecant or cosec/csc in short.

cos50° = c/x

This choice is right by the ratio. Nothing really much to explain since we follow by ratio that is defined.

Answer

tan50° = d/c
cos50° = c/x

Questions can be asked through comment.

Furthermore, tan also has its reciprocal form itself which is called cotangent also known as cot in short.

Hope this helps, and Happy Learning! :)

8 0

3 years ago

You and Mr. Fowles have decided to race each other at the Boston Marathon (26 miles long). Mr. Fowles runs at a steady 4.2 miles

Maslowich

Answer:

The answer is below

Step-by-step explanation:

Speed is the time rate of change of velocity, it is the ratio of distance to time.

Mr. Fowles runs at a steady 4.2 miles per hour. The time taken to cover 26 miles is:

speed = distance / time

time = distance / speed = 26 / 4.2 = 6.19 hour

I run at 3 miles per hour. I was given 3 mile lead, so the remaining distance is 23 miles (26 - 3). The time needed to complete the 23 miles is:

time = distance / speed = 23 / 3 = 7.67 hour

a) Let d be the distance Mr Fowles catches me. Hence:

time = (d + 3)/4.2; also time = d/3

(d + 3)/4.2 = d/3

3d + 9 = 4.2d

1.2d = 9

d = 7.5 miles

He would catch me at 10.5 (7.5 + 3) miles from the starting point.

b) Mr. fowles finishes after 6.19 hour. At that time, the distance is have covered is:

distance = 6.19 * 3 mi/hr = 18.57 mile

Distance behind = 23 mile - 18.57 = 4.43 mile

c) time longer = 7.67 hour - 6.19 hour = 1.48 hour

4 0

2 years ago