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expeople1 [14]
3 years ago
11

Sarah competes in a long jump competition.

Mathematics
1 answer:
hammer [34]3 years ago
8 0
How to find Sarah’s best jump:
First you multiply 4.25 by 12% (or 0.12) to get 0.51 meters.
4.25 + 0.51 = 4.76 meters. So her best jump is 4.76 meters.
How to find the winning jump:
Since her best jump is 15% less than the winning jump, it must be 85% of the winning jump (as in 85 is 85% of 100).
So you divide 4.76 by 85% (or 0.85) which equals 5.6 meters.
So, the winning jump was 5.6 meters.

If you need help calculating percentages, you can use this website:

https://www.skillsyouneed.com/num/percent-calculators.html

Hope this helps!
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Andrej [43]

Answer:

sry I can't understand how to do this question

3 0
3 years ago
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Determine whether the normal sampling distribution can be used. The claim is p &lt; 0.015 and the sample size is n
Svetradugi [14.3K]

Complete Question

Determine whether the normal sampling distribution can be used. The claim is p < 0.015 and the sample size is n=150

Answer:

Normal sampling distribution can not be used

Step-by-step explanation:

From the question we are told that

    The  null hypothesis is  H_o  :  p =  0.015

     The  alternative hypothesis is    H_a  :  p  <  0.015

     

The  sample size is  n= 150

Generally in order to use  normal sampling distribution  

     The value  np  \ge  5

So  

         np =  0.015 * 150

         np =  2.25

Given that  np < 5   normal sampling distribution  can not be used

8 0
3 years ago
A number doubled and has four added to it. The result is divided by three and then added to the product of the original number a
IrinaK [193]
X= a number

(2x+4)/3 + (x+2)= 20
Multiply everything by 3 to eliminate the fraction
(3/1)((2x+4)/3) + (3)(x+2)= (3)(20)
2x+4+3x+6= 60
5x+10=60
Subtract 10 from both sides
5x=50
divide both sides by 5
x=10

Check:
Substitute answer in original equation
(2x+4)/3 + (x+2)= 20
(2(10)+4)/3+(10+2)= 20
(20+4)/3+12= 20
24/3+12= 20
8+12= 20
20=20

Hope this helps! :)
8 0
3 years ago
How do you express 43.7% as a decimal?
maksim [4K]
43.7 % is equivalent to 0.437 .
8 0
3 years ago
Read 2 more answers
X^2-3=0 solve for all real values of x
sineoko [7]

Step-by-step explanation:

x²-3=0

x²=3

x=√3

<h2>stay safe healthy and happy.</h2>
3 0
3 years ago
Read 2 more answers
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