Answer:
B and C are the answers.
Step-by-step explanation:
3b+b = 4b because the value of B or any variable is 1 so 3 +1 is four and 4b is our answer.
2(2b) the brackets tell the number before brackets should be multiplied and 2 × 2 is 4 so the answer is 4b
Answer:
a = - 4, b = 5
Step-by-step explanation:
Expand the left side and compare the coefficients of like terms on the right side.
- 3(2x² + ax + b)
= - 6x² - 3ax - 3b
Comparing like terms with - 6x² + 12x - 15
x - term → - 3a = 12 ( divide both sides by - 3 )
a = - 4
constant term → - 3b = - 15 ( divide both sides by - 3 )
b = 5
Answer:
4800
Step-by-step explanation:
Given the function
y = 75 × 
x is the number of 15 year periods
45 years has 3 15 year periods , thus x = 3
Substitute x = 3 into the function and solve for y
y = 75 × 4³ = 75 × 64 = 4800
There will be 4800 foxes after 45 years
We will calculate the length of the hypotenuse using the Pythagorean theorem. Suppose that the hypotenuse = c, then:
c^2 = 6^2 + 3^2
c^2 = 36 + 9
c^2 = 45
c = square root of 45
c = square root of 9 * square root of 5
c = 3 * square root of 5 ; <em>square root of 5 = approximately 2,24</em>
c = 3 * 2,24 = 6,72 = 6,7
The correct answer is 6,7.
