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3 years ago

I need help on a math question

Mathematics

2 answers:

lakkis [162]3 years ago

5 0

Answer: 1 student and 1 parent each, 41 students and 41 parents

Step-by-step explanation:

well assuming that 3 people are already attending removes 3 seats leaving us with 82 conference seats for student and parents

so simply 1 student and 1 parent each or in other words 82 divided by 2

const2013 [10]3 years ago

3 0

Context ? i need more info.

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In each of the following ,make y the subject and hence find the value of y when a=2, b=3 ,and c=4.

zvonat [6]

Part i

$\dfrac{2a-7}{6y} = \dfrac{3b-5}{2c}$

$y = \dfrac{ 2c(2a-7)}{6(3b-5)} = \dfrac{c(2a-7)}{9b-15}$

Substituting,

$y = \dfrac{4(2(2)-7)}{9(3)-15} = \dfrac{ -12}{12} = -1$

Answer: -1

Part ii

I'm not sure that one's typed in correctly but I'll solve it as written.

$3-34y + 2a = \dfrac{3b-5}{2c + 1}$

$34y = 3+2a-\dfrac{3b-5}{2c + 1}$

$y = \frac 1 {34}\left(3+2a-\dfrac{3b-5}{2c + 1} \right)$

We're not asked to simplify it so I wont. Substituting,

$y = \frac 1 {34}\left(3+2(2)-\dfrac{3(3)-5}{2(4) + 1} \right) = \frac 1 {34}(7-4/9) = \dfrac{59}{306}$

Answer: 59/306

3 0

3 years ago

Please help someone pleaseeeeeeeeeeeeeeeeeeee

Ray Of Light [21]

Mean is adding all the numbers then dividing the answer you go from the numbers.

7 0

3 years ago

Read 2 more answers

Find the solution of this system of equations<br> 4x - 5y = -12<br> -X + 5y = 18

Natalka [10]

4x - 5y = -12

-x + 5y = 18

Add the equations together:

4x + -x = 3x

-5y + 5y = 0

-12 + 18 = 6

So now you have:

3x = 6

Divide both sides by 3:

X = 2

Now you have the value of x, replace x with 2 in one of the equations and solve for y:

4(2) -5y = -12

8 -5y = -12

Subtract 8 from both sides:

-5y = -20

Divide both sides by -5:

Y = 4

The solution is x = 2 and y = 4 which is written as (2,4)

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CaHeK987 [17]

The answer would be B.

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Andreyy89

Answer:

The value is 27

Step-by-step explanation:

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