Answer:
382 children and
312 adults swam
Step-by-step explanation:
Let the number of children be x
And let the number of adult be y
Hence on a hot summer day
x +y = 694 - - - - - - - 1
x= 694-y
Also the daily prices are $ 1.25 for children and $ 2.50 for adults
1.25x + 2.50y= 1257.50-------2
Let us substitute x= 694-y in equation 2
1.25(694-y) + 2.50y =1257.50
867.5-1.25y +2.50y = 1257.50
-1.25y+2.50y= 1257.58-867.5
1.25y= 390
y= 398/1.25
y= 312
Substitute y= 312 in equation 1 to find x
x + 312= 694
x= 694-312
x= 382
Hence 382 children and
312 adults swam
The answer is <span>0.145</span>
<span>
14 1/2 can be expressed as:
</span>
![14 \frac{1}{2} = 14+ \frac{1}{2} =14+ \frac{1*5}{2*5} = 14+ \frac{5}{10} = 14 + 0.5 = 14.5](https://tex.z-dn.net/?f=14%20%20%5Cfrac%7B1%7D%7B2%7D%20%3D%2014%2B%20%5Cfrac%7B1%7D%7B2%7D%20%3D14%2B%20%5Cfrac%7B1%2A5%7D%7B2%2A5%7D%20%3D%2014%2B%20%5Cfrac%7B5%7D%7B10%7D%20%3D%2014%20%2B%200.5%20%3D%2014.5)
<span>
Since we know that x% is x/100, then </span>
14 1/2 % can be expressed as:
14 1/2% = 14.5% = 14.5/100 = 0.145
Uh! Maybe just 2.50/100 = 0.025 (without the % symbol)
Answer:
A really out of focus picture, but I think this might be what you want.
Step-by-step explanation:
Answer:
p(z<0.42) = 0.6628
Step-by-step explanation:
A normal distribution with a mean of 0 and a standard deviation of 1 is called a standard normal distribution. That is to say:
μ = 0
σ² = 1
Using a calculator, we find that:
p(z<0.42) = 0.6628 (See picture attached)