3 years ago

Is -3/4 rational or irrational? Why?

1 answer:

6 0

-3/4 is rational because it can be written as a ratio.

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frutty [35]

Part A

$-16x^2 + 60x+16=0\\\\4x^2 - 15x-4=0\\\\(4x+1)(x-4)=0\\\\x=-\frac{1}{4}, 4$

Part B

The vertex of the graph will be a maximum because the leading coefficient is negative.

The x coordinate of the vertex is $-\frac{60}{2(-16)}=\frac{15}{8}$ .

When x=15/8, $f\left(\frac{15}{8} \right)=\frac{289}{4}$ .

So, the vertex has coordinates $\left(\frac{15}{8}, \frac{289}{4} \right)$

Part C

Plot the two x-intercepts and the vertex and then draw a curve in the shape of a parabola passing through them.

The graph is in the attached image.

3 0

2 years ago

vivado [14]

The answer is D because 35x3 is 105 + the $5 fee is 110

7 0

2 years ago

ivann1987 [24]

-|-3p|

-|-3(5)|
= -|-15|
= -(15)
= -15

The value of the expression when p = 5 is -15.

4 0

2 years ago

Oliga [24]

Answer:

x=3

Step-by-step explanation:

7 0

3 years ago

mina [271]

Answer: n3 when

Step-by-step explanation: just say he fell in the water

8 0

3 years ago