Step-by-step explanation:
ED = EB
2x +3 = 5x -15
3+15=5x -2x
18 = 3x
18 ÷ 3 = x
x = 6
Answer:
We conclude that there has been a significant reduction in the proportion of females.
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 400
p = 50% = 0.5
Alpha, α = 0.05
Number of women, x = 118
First, we design the null and the alternate hypothesis
This is a one-tailed test.
Formula:
Putting the values, we get,
Now, we calculate the critical value.
Now, 
Since the calculated z-statistic is less than the critical value, we fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.
Thus, there has been a significant reduction in the proportion of females.
The sum of three even consecutive integers if the first integer is y will be 3y + 6.
First integer = y
Second integer = y + 2
Third integer = y + 4
Therefore, based on the expressions given above, the sum of the three integers will be:
= y + y +2 + y + 4
= 3y + 6
Therefore, the sum will be 3y + 6.
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A and sjiababsiana ahaha sjajaBba
Answer: He travels 280 miles.
Step-by-step explanation:
Speed = Distance / Time
Distance = speed x time
Distance covered at first 2 hours at 55 mph
= distance = 55 X 2= 101 miles
Distance covered in next hour at 70mph
Distance = 70 x 1= 70 miles
Distance covered in the last 2 hours at 50mph
Distance = 50 x 2= 100 miles
Total distance traveled = 110+70+ 100= 280 miles.
