Answer:
16/15
Step-by-step explanation:
Ratio: 3/4 : 4/5
Whole number ratio: 15 : 16
You need to divide both sides by 15 so you can turn 15 to 1
Divide both sides of the ratio by 15: 1 : 16/15
So, for 1 pound of flour, you need 16/15 pounds of brown sugar for a cake.
Answer:
23%<x<43%
Step-by-step explanation:
The formula for calculating confidence interval is expressed;
Confidence Interval = p ± z√p(1-p)/n
n is the sample size
z is the z score at 98% confidence interval
n is the sample size = 120
z = 2.33
If in a randomly chosen handful of 120 beans 40 were black, then;
p = 40/120
p = 4/12
p = 0.33
CI = 0.33± 2.33√0.33(1-0.33)/120
CI = 0.33± [2.33√0.33(0.67)/120]
CI = 0.33± [2.33√0.2211/120]
CI = 0.33± [2.33(0.04292)]
CI = 0.33±0.100014
CI = (0.33-0.100014, 0.33+0.100014)
CI = (0.229, 0.430014)
CI = (22.9, 43.0014)
Hence 98% confidence interval for the proportion of black beans in the jar is 23%<x<43%.
Equation would be 420 - 5m - 25w so the answer would be B. 4 months
This is a division question, to find the answer we need to divide the number of pens by the amount of pens in each box.
So 420 / 10 = 42
Ty bought 42 boxes
Answer:
B
Step-by-step explanation:
because 25w is 25 dollars per week and you have to add the 55 dollars she earned which equals the total of money she will have.
sorry I'm not great at explaining lol
