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3 years ago

This is a statistic question in a college course.Thanks

Mathematics

1 answer:

sertanlavr [38]3 years ago

8 0

Answer:

225

Step-by-step explanation:

$118.80 is the first quartile, so 25% of the people spent that amount or less. So, the number spending $118.50 or more is 3/4 of the total number:

(3/4)·300 = 225

About 225 people spent more than $118.80 on books.

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Which phrase bost describes the translation from the graph y=(x+2)^2 to the graph of <br> y=x^2 + 3?

maksim [4K]

Answer:

Step-by-step explanation:

2 units right and 3 units up

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3 years ago

Please help me I need help urgently

bazaltina [42]

Answer:

979.68in²

Step-by-step explanation:

3.14× 6² =226.08

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3 years ago

Evaluate the expression when =y−7.<br> y^2+4y-5

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(-7)^2 + 4(-7) -5
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3 years ago

Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of y=4x^2+5x-1

Ivanshal [37]

Answer:

Axis of symmetry: $x=-\frac{5}{8}$

Vertex: $(-\frac{5}{8},-2\frac{9}{16})$

Step-by-step explanation:

The given quadratic equation is

$y=4x^2+5x-1$

By comparing to the general quadratic function; $y=ax^2+bx+c$

We have a=4,b=5,c=-1

The equation of the axis of symmetry is given by the formula;

$x=-\frac{b}{2a}$

We got this formula by completing the square on the general quadratic function.

We substitute a=4 and b=5 to obtain;

$x=-\frac{5}{2(4)}$

$x=-\frac{5}{8}$
is the axis of symmetry.

To find the y-value of the vertex, we put $x=-\frac{5}{8}$ into the function to obtain;

$y=4(-\frac{5}{8})^2+5(-\frac{5}{8})-1$

$y=4(-\frac{5}{8})^2+5(-\frac{5}{8})-1$

$y=-\frac{41}{16}$

The vertex of the given function is $(-\frac{5}{8},-2\frac{9}{16})$

4 0

4 years ago

1/2 times 2/3<br> plzzzzz help

ch4aika [34]

The answer is 0.3333. Hope this helps!

6 0

4 years ago

Read 2 more answers