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wariber [46]
3 years ago
11

I don’t understand number 89! please help I have a test tomorrow!

Mathematics
1 answer:
Rainbow [258]3 years ago
8 0
V = rw

where; v = velocity , r = radius , w = angular speed

you're given the diameter = 0.5 miles so the radius = 0.25 miles

180 = (0.25)w
180/0.25 = w
720 radians per hour = w

2pi radians in 1 revolution

720 rad/hr * 1 rev / 2pi rad = 720/2pi rev/hr
= 114.6 rev/hr
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Answer:

45%

Step-by-step explanation:

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5 0
2 years ago
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Three equivalent ratio of 48:36
Andre45 [30]
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5 0
3 years ago
Tell whether the angles are complementary or supplementary. Then find the value of x.
Paha777 [63]
The angles are complementary meaning they =90 degrees.

So take (x-20) and x, and write this equation,

x-20+x=90

2x-20=90

move the 20 over

2x-20=90
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x=55.

You can check it by plugging it back in,

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8 0
3 years ago
£864.00 to be accrued<br> after £800 is invested with<br> 2% pa simple interest.
Vsevolod [243]

Answer: 4 years

Step-by-step explanation:

Your question isn't complete but I believe that you want to calculate the number of years. This will be:

Simple Interest = PRT/100

where,

Interest = 864 - 800 = 64

Principal = 800

Rate = 2%

Therefore, 64 = 800 × 2 × T /100

Cross multiply

64 × 100 = 1600T

6400 = 1600T

T = 6400/1600

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6 0
2 years ago
The sum of two numbers is 136 one number is 51 what is the other number? What are the common factors of these two numbers?
Rom4ik [11]
The sum of two numbers is 136 (sum is what you get when you add two numbers together). If one of the two numbers is 51, and the other number is X, then:

X + 51 = 136

To solve for x we subtract both sides by 51.

X + 51 -51 = 136 - 51
X = 85

The other number is 85.

What are the common factors of these two numbers?
Factors are the numbers that multiply to make the product.

Factors of 51: 1, 51, 3, 17
Factors of 85: 1, 85, 5, 17
5 0
3 years ago
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