Let pages written by Tom for a school report = x
Pages written by Jen for school report= 10 x
Pages written by Tom + Pages written by Jen = 396
→ x + 10 x = 396
→ 11 x =396
Dividing both sides by 11, we get
→ x =36,
Pages wrote by Tom= 36 pages
Pages wrote by Jen = 36 × 10=360 pages
Answer: -40 - 180
Step-by-step explanation: So we have -40 feet below sea level at 2:15P.M. Notice at 2:16P.M it says 180 feet LOWER. This means if we subtract -40 feet by negative 180 feet, the answer would become -220 feet below sea level. Since we're writing an equation to express the answer, it would be -40 - 180 = -220.
Answer:
I would go with options A. and D.
Answer:
D) Standard deviation is 5.41
Step-by-step explanation:
We are given
count N = 9
Sum ∑xi = 113
Mean = ∑xi /N = 12.55
Standard deviation = 
where i = 1 to 9
upon substituting the values we get
Standard deviation = 
= 5.41
Answer:
x=3 and x=-5
Step-by-step explanation:
To find the x intercepts set y =0 and solve for x
0 = x^2+2x-15
Factor
What two numbers multiply to -15 and add to 2
5*-3 = -15
5+-3 =2
0 = (x+5) (x-3)
Using the zero product property
x+5=0 x-3 =0
x=-5 x=3
