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3 years ago

The volume of a cylinder is 80 cubic centimeters. If the diameter and

Mathematics

1 answer:

slava [35]3 years ago

7 0

Answer:2 yds and h

Step-by-step explanation:

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|(2,9)<br> J (79)<br> 00 -<br> H(25)

elena-14-01-66 [18.8K]

Answer:

what :(

Step-by-step explanation:

8 0

3 years ago

when 6 is subtracted from the square of a number, the result is 5 times the number. Find the negative solution.

sveta [45]

When 6 is subtracted from the square of a number, the result is 5 times the number, then the negative solution is -1

<h3><u>Solution:</u></h3>

Given that when 6 is subtracted from the square of a number, the result is 5 times the number

To find: negative solution

Let "a" be the unknown number

Let us analyse the given sentence

square of a number = $a^2$

6 is subtracted from the square of a number = $a^2 - 6$

5 times the number = $5 \times a$

<em><u>So we can frame a equation as:</u></em>

6 is subtracted from the square of a number = 5 times the number

$a^2 - 6 = 5 \times a\\\\a^2 -6 -5a = 0\\\\a^2 -5a -6 = 0$

<em><u>Let us solve the above quadratic equation</u></em>

For a quadratic equation $ax^2 + bx + c = 0$ where $a \neq 0$

$x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

Here in this problem,

$a^2-5 a-6=0 \text { we have } a=1 \text { and } b=-5 \text { and } c=-6$

Substituting the values in above quadratic formula, we get

$\begin{array}{l}{a=\frac{-(-5) \pm \sqrt{(-5)^{2}-4(1)(-6)}}{2 \times 1}} \\\\ {a=\frac{5 \pm \sqrt{25+16}}{2}=\frac{5 \pm \sqrt{49}}{2}} \\\\ {a=\frac{5 \pm 7}{2}}\end{array}$

We have two solutions for "a"

$\begin{array}{l}{a=\frac{5+7}{2} \text { and } a=\frac{5-7}{2}} \\\\ {a=\frac{12}{2} \text { and } a=\frac{-2}{2}}\end{array}$

We have asked negative solution. So a = -1

Thus the negative solution is -1

6 0

3 years ago

Can’t figure this out help please

Juliette [100K]

Answer:

the slope which is given is to plot the points on a graph.

4 0

3 years ago

Is (-8,1), (-5,1) endpoints of a vertical line, a horizontal line, or neither?

oee [108]

It can be both because there are diffrent sizes

3 0

3 years ago

In an election, Candidate A received 75 votes and candidate B received 25 votes, after the first 100 votes were counted. Assume

enot [183]

Answer:

Candidate receives 2250 votes

Step-by-step explanation:

Ratio of votes A : B = 75 : 25 = 3 : 1

3 : 1 = x : 750

Product of means = Product of extremes

1 *x = 3*750

x = 3 *750

= 2250

3 0

3 years ago