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2 years ago

Determine whether the graphs of y=-7x-4 and -y=7x+4 are parallel, perpendicular, coincident or none of these

Mathematics

2 answers:

Art [367]2 years ago

8 0

Answer:

Coincident

Step-by-step explanation:

horsena [70]2 years ago

5 0

we are given

$y=-7x-4$

$-y=7x+4$

we can multiply -1 on both sides of second equation

$-1*-y=-1(7x+4)$

$y=-7x-4$

we can see that

both equations becomes same

so, they are coincident............Answer

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X ÷ 4 + 5= 8 I need someone to do it and double check for me please.

kow [346]

= x/4 + 5 = 8

= x/4 = 8 - 5 ( transposing +5 from LHS to RHS changes +5 to -5 )

= x/4 = 3

= x = 3 × 4 ( transposing ÷4 from LHS to RHS changes ÷4 to ×4 l

= x = 12

Let us see whether the value of x is correct or not by placing 12 in the place of x .

= 12 ÷ 4 + 5 = 8

= 3 + 5 = 8

= 8 = 8

= LHS = RHS

Which means the value of x we found out is correct .

<h3>Therefore , x = 12 .</h3>

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2 years ago

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Sergio [31]

Answer:

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Step-by-step explanation:

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2 years ago

What is the percent of $12 off $48

Alinara [238K]

Percent means per one-hundred....

48(p/100)=12

48p=1200

p=25%

So $12 off of a $48 item is 25% off.

8 0

3 years ago

SEND HELP YO Find and simplify the area (You need to completely multiply it out and include units in your answer):

Ad libitum [116K]

Answer:

$Area = 2m^8 - 6m^4 + 4.5$

Step-by-step explanation:

Given

$Base = 2m^4 - 3$

$Height = 2m^4 - 3$

Required

The area

This is calculated as:

$Area = 0.5 * Base * Height$

$Area = 0.5 * (2m^4 - 3) * (2m^4 - 3)$

Open brackst

$Area = 0.5 * (4m^8 - 6m^4 - 6m^4 + 9)$

$Area = 0.5 * (4m^8 - 12m^4 + 9)$

Open bracket

$Area = 2m^8 - 6m^4 + 4.5$

5 0

2 years ago

If 11 - 3x = x, then 20x=

dimaraw [331]

Answer:

20x = 55

Step-by-step explanation:

First you have to add 3x to both sides of 11-3x=x

$11-3x=x\\+3x=+3x\\11=4x$

Now that you have 11 = 4x you divide 4 on both sides $\frac{11}{4} =\frac{4x}{4}$

11/4 = x

But you can't divide 11 by 4 unless you are looking for the decimal form of 11/4 which is 2.75

so now we take 11/4 or 2.75 depending on if you need your answer in fraction or as a decimal and replace that with x however both will equal the number 55

$20(\frac{11}{4})=55\\20(2.75)=55$

4 0

2 years ago