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brilliants [131]
3 years ago
12

I need the answer to be proper in simple steps​

Mathematics
1 answer:
Stella [2.4K]3 years ago
6 0

Answer:

  a) φ = 4/7

  b) φ = 4

Step-by-step explanation:

The relationship between radius, angle, and arc length is ...

  a = r·φ . . . . . φ in radians

You want to find the angle φ, so you can divide this equation by r:

  φ = a/r

__

a) φ = a/r = (8 cm)/(14 cm) = 8/14

  φ = 4/7 radians

__

b) φ = a/r = (16 cm)/(4 cm) = 16/4

  φ = 4 radians

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I have two coins. One is fair, and has a probability of coming up heads of.5. \text {The second is bent, and has a probability o
aniked [119]

Answer:0.625

Step-by-step explanation:

Given

There are two coins one is fair and another is bent

Probability of getting a head on fair coin is 0.5

Probability of getting a head on bent coin is 0.75

If both coins are tossed once

probability of getting at least one of the coin will come up tails is

P=1-P(both\ heads)

P=1-0.5\times 0.75

P=1-0.375

P=0.625

6 0
3 years ago
Fill in each blank for the function f(x) = 3x - 6.
IRINA_888 [86]

Answer:

reeee :(

Step-by-step explanation:

7 0
3 years ago
Someone pls help me :)
klasskru [66]

1.

25%

.3 + .2 + .15 + .1 = .75

1.00 - .75 = .25

2.

120 students

There are 400 total students

.3 * 400 = 120

4.

tennis-

.1 * 400 = 40 students prefer tennis

football-

.25 * 400 = 100 students prefer football

140 students like football/tennis

5.

400 students

There are four quarters in a whole

.25% = 100

100 * 4 = 400

4 0
3 years ago
Evaluate the expression for <br> b = -6.<br> 3b =
ch4aika [34]

Answer:

-18

Step-by-step explanation:

Hope that helps

You do 3(-6) to get neg 18

6 0
2 years ago
Read 2 more answers
Lakelyn is training for a triathlon she is practising her swiming running and biking skills so far she can swim at a rate of 250
Nezavi [6.7K]

Answer:

The answer to the question is

It would take Lalelyn bout 3 hours to run the 18m miles, and it will take her

\frac{x}{1.7} +\frac{y}{6} +\frac{z}{12} = t and x +y+z =18 where x, y, and z are the distannce covered swimming, running and bikinr respectifully

Step-by-step explanation:

To solve the question, we lisrt out the variables as follows

Swimming speed of Lakelyn = 250 yards every 5 minutes or 250×12 = 3000 yards/hour = 1.7 miles/hr

Running speed of Lakelyn = 6 miles/hour

Biking speed = 12 miles/hour

The duration it will take for Lakelyn to run 18 miles is given by

Timee taken to run 18 miles t = (Distance covered)/ (Speed of Lakelyn))

or t = D/S

Substituting the known values of such as

Running speed of Lakelyn = 6 miles/hour

From which we have the time taken  to run 18 miles = 18 miles /(6 miles/hour) = 3 hours

should the 18 miles form part of the triathlon then, we have

\frac{x}{1.7} +\frac{y}{6} +\frac{z}{12} = t and x +y+z =18

Where x, y and z are the distance covered Swimming, Running and Biking respectively

4 0
3 years ago
Read 2 more answers
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