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3 years ago

What is the value of the x variable in the solution to the following system of equations?

Mathematics

2 answers:

Elina [12.6K]3 years ago

6 0

X=4 Using elimination method you get x=4 and y= -2

Mazyrski [523]3 years ago

5 0

Correct answer is A.

$3x + 2y = 8
\\2x + 3y = 2 
\\
\\9x+6y=24
\\-4x-6y=-4
\\
\\5x=20
\\x=4$

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For the function f(x) = 5x - 7 answer the following questions:

Elis [28]

Answer:

See below

Step-by-step explanation:

<h3>Given function </h3>

f(x) = 5x - 7

<u>Another notation for same function is</u>

y = 5x - 7, where 5 is the slope and -7 is the y-intercept

<h3>Questions </h3>

<u>1. Is the function increasing or decreasing? </u>

Increasing as x has positive slope

<u>2. What is the y-intercept? </u>

y- intercept is -7

<u>3. What is the slope? </u>

The slope is 5

f(-2) = 5(-2) - 7 = - 10 - 7 = -17

f(x) = 0
0 = 5x - 7
5x = 7
x = 7/5
x = 1.4

8 0

3 years ago

Read 2 more answers

1/4 × -2/3 = how do I solve this problem

Katyanochek1 [597]

$\bf \cfrac{1}{4}\times \cfrac{-2}{3}\implies \cfrac{1\times -2}{4\times 3}\implies \cfrac{-2}{12}\implies \stackrel{simplified}{-\cfrac{1}{6}}$

6 0

3 years ago

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The amount of paper recycled is directly proportional to the number of trees that recycling saves. If recycling 2,000 pounds of

aleksandrvk [35]

Aproximately 42 trees my friend

7 0

3 years ago

A 6 pound bag of oranges cost 6.78 What is the unit price?

oksano4ka [1.4K]

Answer:

$1.13

Step-by-step explanation:

Since 6 pound bag of oranges costs $6.78...

$\frac{6.78}{6}$

Now, let's divide 6.78 in to 6 to find our unit price.

$\frac{1.13}{1}$

Now we know 1 pound, (our unit price), costs...

$$1.13$

5 0

3 years ago

The perimeter of a rectangular campsite is 64 cm and its area is 207 cm. Find the length and the breadth of the rectangle.

AlladinOne [14]

Perimeter Formula:
$2l + 2b = 64$

Area Formula:
$l \times b = 207$
Set perimeter Formula equal to b:
$2l + 2b = 64 \\ 2(l + b) = 64 \\ l+ b = 32 \\ b = 32 - l$
Plug formula for be we just made above into the area Formula:
$(32 - l) \times l = 207$

Solve for L (you'll have to use quadratic formula) then plug that back into the area Equation and solve for b.

Here's a link to where the problem has been explained before (they go into more detail than me).

https://brainly.ph/question/468631

lmk if you need any more help

6 0

3 years ago

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