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3 years ago

A histogram and a__ don’t show individual data. They show how the data are distributed

Mathematics

1 answer:

uranmaximum [27]3 years ago

4 0

Answer:

A dot plot

Step-by-step explanation:

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Give the properties for the equation -2x 2 - y + 10x - 7 = 0.

Sladkaya [172]

Given:

The quadratic equation is

$-2x^2-y+10x-7=0$

To find:

The vertex of the given quadratic equation.

Solution:

If a quadratic function is $f(x)=ax^2+bx+c$ , then

$Vertex=\left(\dfrac{-b}{2a},f(\dfrac{-b}{2a})\right)$

We have,

$-2x^2-y+10x-7=0$

It can be written as

$-2x^2+10x-7=y$

$y=-2x^2+10x-7$ ...(i)

Here, $a=-2,b=10,c=-7$ .

$\dfrac{-b}{2a}=\dfrac{-10}{2(-2)}$

$\dfrac{-b}{2a}=\dfrac{-10}{-4}$

$\dfrac{-b}{2a}=\dfrac{5}{2}$

Putting $x=\dfrac{5}{2}$ in (i), we get

$y=-2(\dfrac{5}{2})^2+10(\dfrac{5}{2})-7$

$y=-2(\dfrac{25}{4})+\dfrac{50}{2}-7$

$y=\dfrac{-50}{4}+25-7$

$y=\dfrac{-25}{2}+18$

On further simplification, we get

$y=\dfrac{-25+36}{2}$

$y=\dfrac{11}{2}$

So, the vertex of the given quadratic equation is $\left(\dfrac{5}{2},\dfrac{11}{2}\right)$ .

Therefore, the correct option is A.

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2 years ago

What are the least common factors of 8 and 4?

Nana76 [90]

Answer:

i think its 2, 4, and 1

Step-by-step explanation:

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3 years ago

Graph the equation y= -1/2x. Please help

DanielleElmas [232]

Answer:

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Step-by-step explanation:

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2 years ago

What is the correct solution set for the following graph?

Serhud [2]

Answer: i do not see a graph

Step-by-step explanation:

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2 years ago

Joe is training for a race in 30 days. He needs to run a total of 135 miles. How many miles will Joe need to run each day to be

yuradex [85]

135/30=4.5mi per day

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2 years ago

Read 2 more answers