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3 years ago

5x + 2y = 8

Mathematics

2 answers:

Mrrafil [7]3 years ago

8 0

Mult the 2nd by 2 then add. this eliminates one of the variables (y) and allows you to solve the other one x

vitfil [10]3 years ago

5 0

Answer:

So it's b.) right

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How do I get the exact value of y

VladimirAG [237]

Y = - pie/4
y = -0.785
I'm not sure if I'm right so u might wanna make sure

5 0

2 years ago

Help me please thanks

horrorfan [7]

Answer:

325m = c

Step-by-step explanation:

Each meeting room has 325 chairs.

Since we don't know how many meeting rooms there are, the number is replaced with the variable, m.

An equation is a problem with an equals sign so you need to put what it would equal.

Since you don't know how many meeting rooms there are you use the variable, c which represents the total number of chairs.

8 0

2 years ago

A vacant lot is being converted into a community garden. The garden and and a walkway around its perimeter have an area of 460 s

mariarad [96]

Answer:

The width of the walkway is 4 feet.

Step-by-step explanation:

The garden and a walkway around its perimeter have an area of 460 square feet.

The length of the garden = 15 feet

The width of the garden = 12 feet

Assuming that walkway is of uniform width, we can solve the following equation.

$(12+2x)\times(15+2x)= 460$

Expanding this we get;

$4x^{2}+54x+180=460$

$=> 4x^{2}+54x-280=0$

We will solve this using quadratic equation formula:

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

Here a = 4 , b = 54 , c = -280

We get the roots as x = 4 and x = $-\frac{35}{2}$

Neglecting the negative value, we will take x = 4 feet.

Hence, the width of the walkway is 4 feet.

5 0

2 years ago

What is the value of w?

PilotLPTM [1.2K]

The Answer is-2.5 because first multiply the numbers are in parentheses

8 0

3 years ago

Plz help me answer this question

Lynna [10]

Answer:

Line A

Step-by-step explanation:

7 0

3 years ago