Answer: Option 'a' is correct.
Step-by-step explanation:
Since we have given that
Total number of students = 200
Number of females = 110
Number of students under the age of 21 years of age = 125
Number of males under the age of 21 years or older = 45
So, it becomes
Males Females Total
21 years 45 80 125
21 years or older 45 30 75
Total 90 110 200
So, Probability that a female student age 21 or older is selected is given by
Hence, Option 'a' is correct.
Answer:
<h3>X=-3</h3>
Step-by-step explanation:
Isolate x on one side of the equation.
<u><em>DISTRIBUTIVE PROPERTY</em></u>
A(B+C)=AB+AC
A(B-C)=AB-AC
3(4x+4) (First, expand.)
3*4x=12x
3*4=12
12x+12
2(5x+9)-12
2*5x=10x
2*9=18
10x+18
18-12=6
12x+12=10x+6
12x+12-12=10x+6-12 (Subtract 12 from both sides.)
6-12 (Solve.)
12-6=6
12x=10x-6
12x-10x=10x-6-10x (Subtract 10x from both sides.)
12x-10x (Solve.)
12x-10x=2x
2x=-6
2x/2=-6/2 (Then, divide by 2 from both sides.)
-6/2 (Solve.)
-6/2=-3
x=-3
As a result, the final answer is x=-3.
Answer:
Slope=− 1.083/1.083 =−0.542
x−intercept= 144/13 =11.07692
y−intercept= 144/24 =6.
Step-by-step explanation:
Answer:
The correct answer is 3/5
Step-by-step explanation:
I know its correct :)
Answer:
D
Step-by-step explanation:
Given
x² + 6x - 9 = 0 (add 9 to both sides )
x² + 6x = 9
Using the method of completing the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(3)x + 9 = 9 + 9
(x + 3)² = 18 ( take the square root of both sides )
x + 3 = ± 
= ± 
= ± 3
Subtract 3 from both sides
x = - 3 ± 3 → D
