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2 years ago

Help pls just help i can't take this anymore

Mathematics

2 answers:

alexgriva [62]2 years ago

8 0

Answer:

it's the second one sooo "B"

Step-by-step explanation:

Romashka-Z-Leto [24]2 years ago

4 0

It is C
Ksixkskxksmxmamlsldllxlallzlskmclaldlldle

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A sports magazine prints 12 issues per year, and a technology magazine prints 10 issues per year. The total number of pages in a

Evgesh-ka [11]

Answer:

$s=t-18...(1)$

$12*s=10*t+32...(2)$

Step-by-step explanation:

Let s be the number of pages in each issue of the sports magazine, and t be the number of pages in each issue of the technology magazine.

We have been given that Each issue of the sports magazine has 18 fewer pages than each issue of the technology magazine. We can represent this information in an equation as:

$s=t-18...(1)$

We are also given that sports magazine prints 12 issues per year, so the total number of pages in all the issues of sports magazine will be 12*s.

We are given that a technology magazine prints 10 issues per year, so the total number of pages in all the issues of technology magazine will be 10*s.

Further, the total number of pages in all the issues of the sports magazine for one year is 32 more than the total number of pages in all the issues of the technology magazine for one year.

We can represent this information in an equation as:

$12*s=10*t+32...(2)$

Therefore, our desired system of equations will be:

$s=t-18...(1)$

$12*s=10*t+32...(2)$

8 0

3 years ago

What is the interquarile range of this box plot

wariber [46]

IQR = Q3 - Q1

= 67 - 45

= 22

Answer is B. 22

4 0

3 years ago

Read 2 more answers

If 7/x + 8/y = 2; 2/x + 12/y = 20, then x = ?

kvv77 [185]

Answer:

<h3><u>Given Question</u></h3>

$\sf \: \dfrac{7}{x} + \dfrac{8}{y} = 2, \: \dfrac{2}{x} + \dfrac{12}{y} = 20, \: then \: x \: = \:$

$\green{\large\underline{\sf{Solution-}}}$

Given pair of equations are

$\rm :\longmapsto\:\dfrac{7}{x} + \dfrac{8}{y} = 2 - - - - (1)$

and

$\rm :\longmapsto\:\dfrac{2}{x} + \dfrac{12}{y} = 20$

On dividing by 2, we get

$\rm :\longmapsto\:\dfrac{1}{x} + \dfrac{6}{y} = 10 - - - - (2)$

On multiply equation (1) by 3 and (2) by 4, we get

$\rm :\longmapsto\:\dfrac{21}{x} + \dfrac{24}{y} = 6 - - - - (3)$

and

$\rm :\longmapsto\:\dfrac{4}{x} + \dfrac{24}{y} = 40 - - - - (4)$

On Subtracting equation (3) from (4), we get

$\rm :\longmapsto\: - \dfrac{17}{x} = 34$

$\rm :\longmapsto\: - \dfrac{17}{34} = x$

$\bf\implies \:x \: = \: - \: \dfrac{1}{2}$

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<h3><u>Concept Used :- </u></h3>

There are 4 methods to solve this type of pair of linear equations.

1. Method of Substitution

2. Method of Eliminations

3. Method of Cross Multiplication

4. Graphical Method

We prefer here Method of Eliminations :-

To solve systems using elimination, follow this procedure:

<h3><u>The Elimination Method</u></h3>

Step 1: Multiply each equation by a suitable number so that the two equations have the same leading coefficient.

Step 2: Subtract the second equation from the first to eliminate one variable

Step 3: Solve this new equation for other variable.

Step 4: Substitute the value of variable thus evaluated into either Equation 1 or Equation 2 and get the value other variable.

4 0

2 years ago

How many pizzas will she need to bring to have exactly enough?

masha68 [24]

So what is 24 divided by 4 is 6 so 6 pizzas she brought to her class. Do you need a full explanation or do u get it ??

3 0

2 years ago

Read 2 more answers

For every touchdown scored by the Timberwolves, the mascot does

KengaRu [80]

You divide 18 by 6 and you get 3. the mascot that does 3 backflis does not matter. The answer is they made 3 touchdowns

5 0

3 years ago

Read 2 more answers

Help pls just help i can't take this anymore​

Help pls just help i can't take this anymore