Answer:
1. 15
Step-by-step explanation:
I'll help you out with question #1 and follow these steps to help you with solving the rest of the problems.
1. and we know that .
We can substitute to the first equation.
Multiply both sides by 3 to get rid of the fraction.
Now you can solve for , for which the value is 15.
93% is 93/100 in fraction form. The reason it is 93/100 is because 93% came from the percentage of 100. You cannot simplify any more for it it in its lowest term. ANSWER:93/100
Answer:
0.5
Step-by-step explanation:
Given that height of 7 year old children are normally distributed with mean =49 inches and std deviation = 2inches
Brenda is 50 inches tall
This means her X score is 50
To convert this X score to Z score we use the formula given below
Here we know all the values of x, mu and sigma
Just substitute
Z score
=
Thus Z score of Brenda is 0.5
Find price per inch:
0.52 / 13 = 0.04 per inch.
Multiply cost per inch by inches:
0.04 x 34 = 1.36
It will cost $1.36 for 34 inches.
The interior angles of a triangle add up to 180 degrees, therefore:
40 + 40 + x-10 = 180
80 + x - 10 = 180
70 + x = 180
x = 110
< D = 110 - 10 = 100