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3 years ago

Can some tell me what do do for this, how to solve it, and the answer?

Mathematics

1 answer:

kotykmax [81]3 years ago

5 0

1 2 3 4 5

2 4 6 8 10

8 10 12 14 16

4 5 6 7 8

3 3 3 3 3

How I did it is i took the numbers 1 to 5 and i doubled them, added 6, divided by 2 and subtracted the starting number.

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If there are 15 students who don’t wear glasses, how many students are in the class?

mixer [17]

Ummmm still 15???????

4 0

2 years ago

<img src="https://tex.z-dn.net/?f=x%20%20%5Cdiv%203x%20-%202%20%3D%201%20%5Cdiv%203x%20-%204" id="TexFormula1" title="x \div 3x

Maurinko [17]

Hello from MrBillDoesMath!

Answer:

x = 1/2 (1 +\- i sqrt(23))

Discussion:

x \3x - 2 = (x/3)*x - 2 = (x^2)/3 - 2 (*)

1 \3x - 4 = (1/3)x - 4 (**)

(*) = (**) =>

(x^2)/3 -2 = (1/3)x - 4 => multiply both sides by 3

x^2 - 6 = x - 12 => subtract x from both sides

x^2 -x -6 = -12 => add 12 to both sides

x^2-x +6 = 0

Using the quadratic formula gives:

x = 1/2 (1 +\- i sqrt(23))

Thank you,

MrB

4 0

3 years ago

What is the area of a book that has a length of 5 inches and a width of 10 inches? how do i find the answer?

wlad13 [49]

I hope this helps you

Area=length.width

Area=5.10

Area=50

4 0

2 years ago

Suppose that there are two types of tickets to a show: advance and same-day. The combined cost of one advance ticket and one sam

kogti [31]

Answer:

Advance tickets-$15

Same-day tickets-$20

Step-by-step explanation:

let x be the cost of advance tickets and y cost of same-day tickets:

$x+y=35\ \ \ \ \ \ \ ...i$

Given that there were 40 advance and 25 same-day tickets for a total of $1100:

$40x+25y=1100\\\\8x+5y=220\ \ \ \ \ \ \ \ \ \ \ ...ii$

#Make x the subject in i and substitute in ii:

$x=35-y\\\\\therefore 8x+5y=220, x=35-y\\\\8(35-y)+5y=220\\\\280-8y+5y=220\\\\60=3y\\\\y=20\\\\x=35-y=35-20=15$

Hence, advance tickets cost $15 each while same-day tickets cost $20 each.

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3 years ago

The sum of twice a number and 6

Allushta [10]

Answer:

The answer to your question is 4

The sum of twice a number and 6 is 4.

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2 years ago