Answer:
f(1)=0; f(0)= -2; f(-1)=(-4); f(2)=2
Step-by-step explanation:
For the first four questions, f(1) means that x= 1, so you need to look at the graph, find the point where x= 1, and find the corresponding y value which is 0. You do this same process for each of the rest.
For 5 and 6: when they say f(x) = some value, this is the y value. So look at the graph: when y = 4, you can see that x = 3. When y = -6, you can see that x= -2.
Answer:
-28
Step-by-step explanation:
Plugging in -6 as x we get 5(-6) + 2, which simplifies to -30 + 2 or -28.
Given :-
To find :-
Solution :-
<u>According</u><u> to</u><u> Question</u><u>,</u>
- x = 3 + √8
- 1/x = 1/3-√8
- 1/x = 1(3+√8)/(3+√8)(3-√8)
- 1/x = 3+√8/3²-(√8)²
- 1/x = 3+√8/9-8
- 1/x = 3 + √8
<u>So </u><u> </u><u>that</u><u> </u><u>,</u>
- x² + 1/x²
- (x + 1/x)² - 2
- ( 3+√8+3-√8)²-2
- 9² - 2
- 81 - 2
- 79
Answer:
19.5m
Step-by-step explanation:
Use the Pythagorean theorem.
a^2 + b^2 = c^2
The longest side, 35m, is c and the base of the triangle, 29m, is b.
a^2 + 29^2 = 35^2
Simplify.
a^2 + 841 = 1225
Get a by itself by adding -841 to both sides to cancel out the 841.
a^2 = 384
Find the square root of both sides to get rid of the exponent.
square root of 384 = ~19.5959
a = 19.5
Answer:
D
Step-by-step explanation:
Given
x² + 6x - 9 = 0 (add 9 to both sides )
x² + 6x = 9
Using the method of completing the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(3)x + 9 = 9 + 9
(x + 3)² = 18 ( take the square root of both sides )
x + 3 = ± 
= ± 
= ± 3
Subtract 3 from both sides
x = - 3 ± 3 → D
