Answer:
Adult required in the case of “a” 28 and in the case of “b” the adult requirement is 19.
Step-by-step explanation:
(a) The percentage of adult that support the change is 20 percent.
Now calculate the number of adult required.
Given p = 0.20
Use the below condition:
![np(1 – p) \geq 10 \\n \times 0.20 (1 – 0.20) = 10 \\n = 63 round off](https://tex.z-dn.net/?f=np%281%20%E2%80%93%20p%29%20%5Cgeq%2010%20%5C%5Cn%20%5Ctimes%200.20%20%281%20%E2%80%93%200.20%29%20%3D%2010%20%5C%5Cn%20%3D%2063%20round%20off)
Since 35 adults are already there so required adults are 63 -35 = 28
(b) The percentage of adult that support the change is 25 percent.
Now calculate the number of adult required.
Given p = 0.25
Use the below condition:
![np(1 – p) \geq 10 \\n \times 0.25 (1 – 0.25) = 10 \\n = 54 (round off)](https://tex.z-dn.net/?f=np%281%20%E2%80%93%20p%29%20%5Cgeq%2010%20%5C%5Cn%20%5Ctimes%200.25%20%281%20%E2%80%93%200.25%29%20%3D%2010%20%5C%5Cn%20%3D%2054%20%28round%20off%29)
Since 35 adults are already there so required adults are 54 -35 = 19
.
A. -x=-22-38
-x=-60
Tú correcta respuesta es x=60
B. x+45
x=35-42
Tú correcta respuesta es x=-7
C. 18+x+-8=4
18+x-8=4
x+10=4
x=4-10
Tú correcta respuesta es x=-6
Thus the expression is 0.15x.
Given,
A reasonable tip for some is 15% of the subtotal.
We need to write an expression that would represent how much tip you should leave if x represented the subtotal.
<h3>How to write the percentage of a quantity?</h3>
Let the quantity be 100.
5% of 100 = 5/100 x 100 = 5
10% of 100 = 10/100 x 100 = 10
50% of 100 = 50/100 x 100 = 50
We have,
Subtotal = x
Tip = 15%
Write the expression for 15% of x
15% of x
= 15/100 x (x)
= 0.15x
Thus the expression is 0.15x.
Learn more about writing an expression that represents the total amount paid here:
brainly.com/question/18650503
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10 dergres that is the answer