Answer:
36 people
Step-by-step explanation:
The expected value E(X) = mean of sample = np
Where, p = population proportion, p = 9% = 0.09
n = sample size, = 400
The mean of the number of people with genetic mutation, E(X) = np = (400 * 0.09) = 36
36 people
Answer:
<em>(-2, -6)</em>
Step-by-step explanation:
Given the simultaneous equation
3x-y=0 ... 1
2x+y=-10 ... 2
Add both equations to eliminate y
3x + 2x = 0 - 10
5x = -10
x = -10/5
x = -2
Substitute x = -2 into 1
3(-2)- y = 0
-6 - y = 0
-y = 0+ 6
-y = 6
y = -6
<em>Hence the coordinate (x, y) is (-2, -6)</em>
Answer:
0.84, 84%
Step-by-step explanation:
Tax sucks, trust me. Since we use tax often in our lives, it's quite easy nowadays.
Switch the 7% tax to a number that can be used in a calculation.
Always divide the percent (7%) by 100%.
7% divided by 100% = 0.07
Now, you need to find out the total cost.
Always multiply 0.07 by 1500.
0.07 × 1500 = 105.
Now that we know that you have to pay an extra $105 tax, we can add it with the original price.
$1500 + 105 = 1605.
Your total price for the computer will be: $1605.
