Answer:
y=(x-1)(x-4) & 100°
Step-by-step explanation:
<u>Graph</u>
1) there are x-intercepts at 1 and 4so you set those equal to x
ex. x=1 x=4
2) then subtract them over to equal 0 and set it equal to y
ex. y=(x-1)(x-4)
<u>Angle</u>
*IMPORTANT* Straight lines are equal to 180°
∠CBD = 80°
1) So you just subtract ∠CBD from 180°
ex. 180° - 80° = 100°
The answers to the questions
We have that
f(x) = –4x²<span> + 24x + 13
</span>
we know that
The vertex form for a parabola that opens up or down is:
f(x) = a(x - h)^2 + k
in the given equation, <span>a=-4</span><span>, therefore we add zero to the original equation in the form of </span><span>4h</span>²<span>−4h</span>²
f(x) = –4x² + 24x + 4h²−4h² +13
<span>Factor 4 out of the first 3 terms and group them
</span>f(x) = –4*(x² -6x +h²) +4h² +13
<span>We can find the value of h by setting the middle term equal to -2hx
</span>−2hx=−6x
<span>h=3</span><span> and </span><span>4h</span>²<span>=<span>36
</span></span>f(x) = –4*(x² -6x +9) +36 +13
we know that the term (x² -6x +9) is equals to------> (x-3)²
so
f(x) = –4*(x-3)² +49
the answer isf(x) = –4*(x-3)² +49
Answer: -56 or b.
Step-by-step explanation: -6+(-73)=-79 because the negative number means minus.
-79+(positive)56=-23 because a negative number plus a positive number is adding the positive number meaning you subtract but keep the negative sign
-23+(-33)=-56 because the negative number means minus
I don't know how to explain that is just kind of how it works.
But here's something for the future.
Positive+(Negative) is minus
Positive+Positive is plus (duh)
Negative plus negative is minus (or add but theres a negative sign)
Negative-negative=plus (idk why but its meth)
Answer: huh
Step-by-step explanation:
