21) 473 1/5
22) 1/3
23) 4 1/4
Answer:
Height h = 9 cm
Step-by-step explanation:
Given:
Surface area of cuboid = 102 cm²
Length l = 2 cm
Breadth b = 3 cm
Find:
Height h
Computation:
Surface area of cuboid = 2[lb + bh + hl]
102 = 2[(2)(3) + (3)(h) + (h)(2)]
51 = 6 + 3h + 2h
45 = 5h
Height h = 9 cm
Answer:
2 1/4 gallons
Step-by-step explanation:
If 3/4 covers 1/3 of the wall, you need to multiply 3/4 by 3, which gives you 9/4, or 2 1/4 gallons
Hope this helps
Answer:
The answer to your question is:
Step-by-step explanation:
24.-
y = 5x - 6
x + 5y = 5 5y = - x - 5 y = -(1/5) x - 1
Because of the slopes "5" and "-1/5" the lines are perpendicular.
25.- 2x + y = 10 y = -2x + 10 slope = -2
-6x - 3y = 3 -3y = 6x + 3 y = -2x - 1 slope = -2
x - 2y = 8 -2y = - x + 8 y = (1/2) x - 4 slope = 1/2
Lines a and b are parallels and perpendicular to c
Answer:
The mean of the sampling distribution of p is 0.75
The standard deviation of the sampling distribution of p is 0.0274
Step-by-step explanation:
According to the given data 75% of the sampled households watch sports on television at least once a month therefore the mean of the sampling distribution of p is 0.75.
In order to calculate the standard deviation of the sampling distribution of p we would have to use the following formula as follows:
Standard deviation = √ [ p ( 1 - p) / n ]
= √[ 0.75 * ( 1 - 0.75) / 250]
= 0.0274
The standard deviation of the sampling distribution of p is 0.0274.