Answer:
is this actually a question?
Step-by-step explanation:
Answer:
y = 2.5(x + 2)^2 - 3
The answer is A
Step-by-step explanation:
The general equation for the vertex is
y = a (x + b)^2 + c
a we are not certain about
b = 2
c = - 3
y = a(x + 2)^2 - 3 Now we have to solve for a.
a is found by using the one point we know (0,7) It means when x = 0 y = 7 so just put those two numbers in.
7 = a(0 - 2)^2 - 3
7 = a (- 2)^2 - 3 Add 3 to both sides.
7 + 3 = a(4) Combine 7 and 3
10 = 4a Divide by 4
10/4 = a Do the actual division
2.5 = a
Answer: See above
Answer:
28° A
Step-by-step explanation:
we have isosceles triangle, which's 2 sides and 2 angles are equal.
we have two equal sides, so another side is base.
base angles are equal, so if E=28 thenG=28 too
<span>Let the wall's length be y. So the fence parallel is also y.
We form the equation;
2x + y = 240
Now the area A is x*y, which is given as 5500.
We have 2 equations with 2 variables. Solve them and get the answer.
xy = 5500
2x + y = 240
Y = 5500/x
2x + (5500/x) = 240
2x^2 - 240x + 5500 = 0
x^2 - 120x + 2750 = 0
Work out the value(s) of x from above. </span>
Answer: -x + 2
Step-by-step explanation:
So I assume that the question would be set up like this if you are finding the sum of all 3 terms:
(x + 5) + (-4x - 2) + (2x - 1)
1) Take out parentheses
x + 5 - 4x - 2 + 2x - 1
2) Add like terms
For the x terms:
x - 4x = -3x
-3x + 2x = -x
For the other terms:
5 - 2 = 3
3 - 1 = 2
The sum of the terms is <u>-x + 2</u>
