Answer:
x = sqrt(15) - 1 or x = -1 - sqrt(15)
Step-by-step explanation:
Solve for x:
x^2 + 2 x + 7 = 21
Subtract 7 from both sides:
x^2 + 2 x = 14
Add 1 to both sides:
x^2 + 2 x + 1 = 15
Write the left hand side as a square:
(x + 1)^2 = 15
Take the square root of both sides:
x + 1 = sqrt(15) or x + 1 = -sqrt(15)
Subtract 1 from both sides:
x = sqrt(15) - 1 or x + 1 = -sqrt(15)
Subtract 1 from both sides:
Answer: x = sqrt(15) - 1 or x = -1 - sqrt(15)
The answer is n=10 I already did this
A function is said to be an exponential function when the value of the function increases/decreases rapidly.
The situations that can be represented by an exponential function are:
<span>an event organizer finds each year's attendance for the past five years is about 4/5 of the previous year's attendance.
</span>a toad population is increasing by about 7.5% each year
Answer:
She will need 8 boxes.
Step-by-step explanation:
Given that,
Total no of seashells = 125
She gives her little brother Chris 53 seashells.
Remaining seashells = 125 - 53
= 72
Regina wants to put her remaining seashells in Little Boxes. There will be 9 seashells in each box.
No of boxes needed = remaining seashells/total no of seashells in each box
Hence, she will need 8 boxes.
