Answer:
x = - 9, x = 10
Step-by-step explanation:
Given
x² - x - 90 = 0
Consider the factors of the constant term (- 90) which sum to give the coefficient of the x- term (- 1)
The factors are - 10 and + 9, since
- 10 × 9 = - 90 and - 10 + 9 = - 1 , thus
(x - 10)(x + 9) = 0 ← in factored form
Equate each factor to zero and solve for x
x - 10 = 0 ⇒ x = 10
x + 9 = 0 ⇒ x = - 9
lesser x = - 9
greater x = 10
Answer:
from what i see i see thats its D
if not im sorry but i hope i got it right
Step-by-step explanation:
Answer:
340 sheep.
Step-by-step explanation:
There is a decrease of 640 - 576 = 64 sheep in the first year.
This is 1/10 of the previous year, so the number in year 2 is 0.90 of the number of sheep in year 1, so a model for this could be:
640(0.90)^x where x is the year.
So after 6 years the estimate would be 640 *(0.90)^6
= 340 sheep.
The answer would b be d 8 I think
Answer:
The logarithm of 10,000 with base 10 is 4." 4 is the exponent to which 10 must be raised to produce 10,000. "104 = 10,000" is called the exponential form. "log1010,000 = 4" is called the logarithmic form.
Step-by-step explanation: