I need help with this please...

Mathematics

2 answers:

Luda [366]2 years ago

5 0

Answer:
I think it should be 56

DENIUS [597]2 years ago

3 0

Minimum the answer should be 34

You might be interested in

Find the x intercept of the parabola with vertex 3,-2 and y intercept 0,7 round to the nearest hundredth

12345 [234]

An x-intercept is namely a "solution" or "zero" or "root" often called, and when that happens, y = 0, just like with any other x-intercept.

$\bf ~~~~~~\textit{parabola vertex form}
\\\\
\begin{array}{llll}
\boxed{y=a(x- h)^2+ k}\\\\
x=a(y- k)^2+ h
\end{array}
\qquad\qquad
vertex~~(\stackrel{}{ h},\stackrel{}{ k})\\\\
-------------------------------\\\\
\begin{cases}
h=3\\
k=-2
\end{cases}\implies y=a(x-3)^2-2
\\\\\\
\textit{we also know that }
\begin{cases}
x=0\\
y=7
\end{cases}\implies 7=a(0-3)^2-2
\\\\\\
9=9a\implies \cfrac{9}{9}=a\implies 1=a\qquad therefore\qquad \boxed{y=(x-3)^2-2}$

so what is its x-intercept anyway?

$\bf \stackrel{y}{0}=(x-3)^2-2\implies 2=(x-3)^2\implies \pm\sqrt{2}=x-3
\\\\\\
\pm\sqrt{2}+3=x\qquad therefore\qquad (\pm\sqrt{2}+3~~~~,~~~~0)$

5 0

2 years ago

Which of the following expressions is equivalent to 3 m ( m − 2 ) − ( m ^2 + 1 ) ?

leonid [27]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A $30 shirt is marked, "Get 25% off." What is the sale price of the shirt?

Alchen [17]

Answer : $22.50
Explanation: .30•25=7.5 30-7.5=22.5