Answer:
admission price of each parent = $7.5
admission price of each child = $15
Step-by-step explanation:
x = admission price of each parent
y = admission price of each child
Robinson family:
2x + 4y = 75
Moore family:
2x + 3y = 60
2x + 4y = 75 (1)
2x + 3y = 60 (2)
Subtract (2) from (1)
4y - 3y = 75 - 60
y = 15
Substitute y = 15 into (1)
2x + 4y = 75
2x + 4(15) = 75
2x + 60 = 75
2x = 75 - 60
2x = 15
x = 15/2
x = 7.5
Answer:
-3/5
Step-by-step explanation:
To find slope we use the formula, slope = (y2-y1)/(x2-x1)
We let (3,5) be the first point so, x1 = 3 and y1 = 5
We let (8,2) be the second point so, x2 = 8 and y2 = 2
Now we plug it in the formula,
slope = (2-5)/(8-3) = -3/5
Answer: 90.93%
Step-by-step explanation:
M= 372
s= 26
n=36
P(365<u><</u>x<380)
1. Find Z ----> <u>365-372</u>
= -1.6 Next Z----><u> 380 - 372 </u>
<u>= </u> 1.8
26 26
2. plug into calculator to find probablity: normalcdf(-1.6 , 1.8 ) = .90927 or 90.93% that the prob is between 365 and 380
Answer: $150
Step-by-step explanation: If you did not use the coupons you would have spent $150 on groceries. The way to calculate the original price is to divide the price that you paid by the percentage that you paid.
The formula is $120 / .8 = $150, meaning that the original price was $150.