Set up an equation and solve:
2x-14=52
2x=66
x=33
sydney is 33 and devaughn is 19
If the question was -20.48 divided by -4 then the answer is 5.12
Answer:
d.
Step-by-step explanation:
The absolute value of a negative makes it a positive so |-3| is actually just 3
Tan x degrees = 31
To find X use arctan.
x = arctan(31)
x = 88.15
x = 88.2 (rounded to the nearest tenth)
Answer:
The mean of the combined math and verbal scores is 1100, while the standard deviation is 141.
Step-by-step explanation:
Normal variables
Normal variables have mean and standard deviation
When we add normal variables, the combined mean is the sum of both means, and the standard deviation is the square root of the sum of both variances. The distribution is still normal.
In this question:
Verbal: .
Math:
Combined:
The mean of the combined math and verbal scores is 1100, while the standard deviation is 141.