Its either A or C they both have the same spot when it is graphed.
Answer:
Step-by-step explanation:
The formula of a circumference of a circle:
Answer:
D is false
Step-by-step explanation:
f(x) = -2x2 + 4x + 6 should be written with a " ^ " to indicate exponentiation:
f(x) = -2x^2 + 4x + 6.
Because of the - sign, we know that the graph of this function opens down, so there is a maximum at the vertex. We can determine the x-value at the vertex by using the formula x = -b/(2a), which here is x = -4/(2*-2), or 1.
Evaluating f(x) = -2x^2 + 4x + 6 at x = 1, we get -2 + 4 + 6, or 8. So statement A is true: there's a max at (1, 8). This is also the vertex of the graph.
Let's now look at C and D. We evaluate f(x) at x = 3 and x - 2. If the output (y) value is 0, we know we have an x - intercept:
f(3) = -2(9) + 4(3) + 6 = 0. Yes, C is true, (3, 0) is an x-intercept.
f(-2) = -2(4) - 8 + 6 is not 0. Therefore D is false; (-2, 0) is not an x-intercept.
Look at B: Let x = 0 and find y: it's 6. Thus, (0, 6) is the y-intercept. B is true.
If the side of the square flower bed was enlarged by 8 feet and the area of the new flower bed was 3 times the area of the old one then the length of the side of the old flower bed was 4 feet.
Given that the side of square flower bed was enlarged by 8 feet and the area of the new flower bed was 4 feet.
We are required to find the length of the side of the old flower bed.
We know that the area of rectangle is equal to the product of length and breadth of that rectangle.
let x represents the side of the square old flower bed.
Dimensions of new rectangular flower bed:
Width=x
Length =x+8
Area=3*
=3
Thus:
x(x+8)=3
+8x=3
2=8x
2x=8
x=4
Hence if the side of the square flower bed was enlarged by 8 feet and the area of the new flower bed was 3 times the area of the old one then the length of the side of the old flower bed was 4 feet.
Question is incomplete as the next part of the question is as under:
Calculate the length of the side of the old flower bed?
Learn more about area at brainly.com/question/25292087
#SPJ4
Answer:
9 years 7 months
Step-by-step explanation:
I believe we're to find how long it took.
The interest on the money is $8865 - $6000 = $2865
Interest = P x t x r
P is the principal money $6000
t is time in years
r is the rate 5% = 0.05
Equating, we have
2865 = 6000 x t x 0.05
2865 = 300t
t = 2865/300 = 9.55 yrs
Approximately 9 years 7 months
