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3 years ago

Write an equation to find the number of Mr.night's homeroom if the total number of students is 90

Mathematics

1 answer:

tia_tia [17]3 years ago

5 0

This question is obviosly missing an ending but, I bet you will have to divide.

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2v^2-12 =-12v <br> Would really appreciate it loves❤️

Black_prince [1.1K]

For this case we have the following equation:

$2v ^ 2-12 = -12v$

Rewriting we have:

$2v ^ 2 + 12v-12 = 0$

Dividing by 2 to both sides of the equation:

$v ^ 2 + 6v-6 = 0$

We apply the quadratic formula:

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

We have to:

$a = 1\\b = 6\\c = -6$

Substituting:

$x = \frac {-6 \pm \sqrt {6 ^ 2-4 (1) (- 6)}} {2 (1)}\\x = \frac {-6 \pm \sqrt {36 + 24}} {2}\\x = \frac {-6 \pm \sqrt {60}} {2}\\x = \frac {-6 \pm \sqrt {4 * 15}} {2}\\x = \frac {-6 \pm2 \sqrt {15}} {2}$

Thus, we have two roots:

$x_ {1} = - 3+ \sqrt {15}\\x_ {2} = - 3- \sqrt {15}$

ANswer:

$x_ {1} = - 3+ \sqrt {15}\\x_ {2} = - 3- \sqrt {15}$

7 0

3 years ago

Which of the following statements is TRUE? You cannot choose the Economy Plan if you have a family. You can choose to opt out of

xxTIMURxx [149]

The statement which is true is; You can choose to opt out of any health care, vision coverage, and/or dental coverage included in the Standard Plan described in the Medical Plan documents.

<h3>Medical plans</h3>

In partial fulfillment of exercising one's human rights, an individual can choose to opt out of any healthcare, vision coverage, and/or dental coverage included in the Standard Plan described in the Medical Plan documents.

However, there are consequences for not having medical plans.

Read more on medical plans;

brainly.com/question/25793763

3 0

2 years ago

Pls help me thank you

SOVA2 [1]

Answer:

A no. is correct one

Step-by-step explanation:

Hope it will help you. and please mark me brilliant

4 0

2 years ago

Read 2 more answers

If gumballs cost 150 a bag ,and there 15!gumballs in each bag much do you need to charge for each gumball in order to make money

pshichka [43]

More than 10 a gumball.

150 divided by 15 is 10, which would be the price you bought for. If you want to make more money, you must at least have a surge pricing of 10 unit prices per gumball.

7 0

3 years ago

Read 2 more answers

Which of the following is a correct name for plane R below? * Which of the following is a correct name for plane R below? * plan

olga_2 [115]

Answer:

Plane SPT and Plane SPV

Step-by-step explanation:

A plane is defined by the set of three points lying on the same (two dimensional) surface.

A plane 'R' has been given in the picture.

Points lying on this plane or surface are S, P, T and V.

Therefore, possible names may be,

SPT, STV, SPV, PTV

From the given options names of the plane R will be,

Plane SPT and Plane SPV,

8 0

3 years ago