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jolli1 [7]
3 years ago
12

Karen jumped rope for 20 minutes she stopped at 8:05 when does she start jumping

Mathematics
1 answer:
Anna [14]3 years ago
4 0

she started jumping rope at 7:45

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Which ones are rational
Alenkasestr [34]
A rational number is a number that can be made by dividing two integers. An integer is a number that doesn't have a fraction part.

1. 2.4 - rational
2. 74 - rational
3. 17.3333333… - rational
4. π -irrational
5. there is no number
6. –18 - rational
7. there is no number
8. 87.125 - rational
9. –30 - rational
10. –8.3 -rational
11. 58.25 -rational
12. 121 -rational
13. 4.5 -rational
14. 3 7/10 -rational

As you can see, most numbers are rational. But, when you come across pi or when you have a decimal that goes on forever without repeating (like some square roots), it tends to be irrational.
3 0
3 years ago
" A car is travelling around a horizontal circular track with radius r = 230 m at a constant speed v = 17 m/s as shown. The angl
Luda [366]
R = 230 m
v = 17 m/s

Formula: |Ac| = v^2 / r

Point A

|Ac| = v^2 / r = (17m/s)^2 / (230m) = 1.257 m/s^2

Components:

cos(25) = - [ x-component / |Ac| ] => x-component = -|Ac|*cos(25)
sin(25)  = - [y-component / |Ac| ] => y-component = - |Ac|*sin(25)

x-component = - 1.256 * cos(25) m/s^2 = - 1.139 m/s^2
y-component =  -1.256 * sin (25) m/s^2 = - 0.531 m/s^2

Point B

|Ac| = 1.256

x-component = - 1.256 cos(58) = - 0.666 m/s^2
y-component = + 1.256 sin(58) = + 1.065 m/s^2

 

 
7 0
3 years ago
He made a baby quilt that was 3 feet wide. it's perimeter is 16 feet. What was it's area?
Anon25 [30]
Since it’s 3 feet wide that means this is a rectangle, not a square. so Two sides are 3 feet which would equal 6. 16-6=10. The other two sides would have to be 5 so that all the sides add up to 16. The area for a rectangle is Length • Width. so 3•5= 15 feet squared.
7 0
4 years ago
Read 2 more answers
What is 4,000/80 show your work
attashe74 [19]
Well you may already know that 8 x 5 = 40.

So, add zeros. 

80 x 50 = 4,000.

So now, make it division. 

4,000/80 = 50.
7 0
3 years ago
What is the Greatest Common Factor of x4 and x5? <br> x − x4 <br> x3 <br> x2 <br> x
const2013 [10]

Answer: x^4

Step-by-step explanation:

Here, the given expressions are,

x^4

x^5

The factors of x^4 = x × x × x × x

While, the factors of x^5 = x × x × x × x × x

Hence, the common factors = x × x × x × x = x^4  

So, the greatest common factor of the given expression is x^4          

5 0
3 years ago
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