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krek1111 [17]
4 years ago
13

Help on 1,2,3,4,5,6,7, and 8 please!

Mathematics
1 answer:
Bogdan [553]4 years ago
3 0
Number 7 is 6 2/3 ...
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Jasmine is riding on a carousal. She is sitting 9.5 feet from the center and it takes 20 seconds to
rusak2 [61]

Answer:

<em>2.983 </em>ft/sec

Step-by-step explanation:

Given that

Distance between center and Jasmine riding on a carousal = 9.5 feet

Time taken to complete one rotation = 20 seconds

To find:

Jasmine's linear speed = ?

Solution:

Number of revolutions per minute = \frac{60}{20} = 3

Formula for linear speed is given as:

v=\dfrac{2\pi}{60}\cdot r\cdot RPM

Where r is the radius of circular path and

RPM is the number of revolutions per minute.

v=\dfrac{2\pi}{60}\times 9.5 \times 3\\\Rightarrow v=\dfrac{\pi}{10}\times9.5 \\\Rightarrow v = \bold{2.983\ ft/sec}

Therefore, the linear speed is <em>2.983 ft/sec.</em>

5 0
4 years ago
Please help me y’all look at the picture attached
myrzilka [38]

Answer:

the answer her is 180 the second one

5 0
3 years ago
What is the value of the expression below?<br><br> -3 (n - 5)
nataly862011 [7]
Your answer is gonna be 2
4 0
3 years ago
Credit cards place a three digit security code on the back of cards. What is the probability that a code starts with the number
yan [13]
<h2>Answer:</h2>

The probability that a code starts with the number 7 is:

                          1/10

<h2>Step-by-step explanation:</h2>

There are total 10 digits:

0   1   2    3    4   5   6   7   8   9

Also, the total number of codes that are possible using these digits are:

                            1000

( Since there are 10 choices for first place, 10 for second and 10 for third as well

Hence, total possibilities are: 10×10×10=1000 )

Also, if the first place of the code is fixed with number 7.

So, we need to chose the digits for second and third place.

Hence, total codes whose first digit is 7 are:

                      100

( Since the choice for first place is fixed and for second and third place we have 10 choices i.e. total such cases are: 1×10×10=100   )

Hence, the probability is calculated as:

            Probability=100/1000

                               =1/10

4 0
3 years ago
If 25% of n is 18, then what is 125% of n?<br><br> SHOW ALL WORK!!!!!!!!!!!!
Lorico [155]
25 % = 18
50% = 36
75 % = 54
100 % = 72 

25% x 72 = 18 therefore n = 72 
125% x 72 = 90

Therefore 125% of n is 90
6 0
3 years ago
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