Answer:
Step-by-step explanation:
The sum of a number and 9 is adding of any variable to 9.
E.g the sum of 8 and 7
8+7=15
We can also have the sum of two unknown numbers, we can let the first number be x and the second number be y, then the sum of the two unknown will be (x+y).
So, let apply this to the question
The sum of a number and 9, since we don't the number, let the number be n, then the sum of the number and 9 will be (n+9)
Then the correct option is B which is n+9
Change in temperature = final - initial
= 22 - (-13)
= 22 + 13
= 35
In short, Your Answer would be 35
Hope this helps!
Answer:
They had 4 more 7-9 runs than 10-12 runs.
Step-by-step explanation:
First you need to identify how many games they had 7-9 runs and 10-12 runs. Next, you need to subtract the 7-9 run games by the 10-12 run games.
14-10=4
Answer:
A.
62% of the respondents attended public universities.
Step-by-step explanation:
Answer:
x = 2 ± 2 sqrt(5)i
Step-by-step explanation:
(x – 2)^2 + 20 = 0
Subtract 20 from each side
(x – 2)^2 + 20 -20=0 -20
(x – 2)^2 =- 20
Take the square root of each side
sqrt((x – 2)^2) =±sqrt(- 20)
x-2 = ±sqrt(- 20)
We know sqrt(ab) = sqrt(a) sqrt(b)
x-2 = ±sqrt(- 1) sqrt(20)
We know the sqrt (-1) = i
x-2 = ±i sqrt(4*5)
x-2 = ±i sqrt(4) sqrt(5)
Add 2 to each side
x-2+2 = 2 ±i sqrt(4) sqrt(5)
x = 2 ±i 2 sqrt(5)
x = 2 ± 2 sqrt(5)i
