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3 years ago

PLEASE. HELPPPPPPPhshdjfnhdhe

Mathematics

1 answer:

arlik [135]3 years ago

6 0

Answer:

x+2y= -10......eqn(i)

3x-y=12.........eqn(ii)

multiply the eqn(ii) by 2

x+2y= -10

6x-y=12

or, 7x=14

or, x=14/7

or, x=2

now, substituting the value of x=2 in eqn(i)

x+2y= -10

or, 2+2y= -10

or, 2y= -10-2

or, 2y= -12

or, y= -12/2

or, y= -6

therefore the equation is proved

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denis-greek [22]

Answer:

$\boxed{\large\sf y = 3x - 5}$

Step-by-step explanation:

Here we are given a equation which is ,

$\longrightarrow y = 3x + 6$

We need to find out the equation of the line which is parallel to the given line and passes through the given point .

And as we know that the slope of two parallel lines are equal .

On comparing the given equation with slope intercept form (y = mx + c )of the line , we have ,

$\longrightarrow m = 3$

Therefore the slope of the parallel line will be ,

$\longrightarrow m_{||}= 3$

Now we can use the point slope form of the line which is ,

$\longrightarrow y - y_1 = m(x - x_1)$

Substitute ,

$\longrightarrow y - 7 = 3 ( x -4)\\\\\longrightarrow y -7 = 3x -12 \\\\\longrightarrow y = 3x -12+7\\\\\longrightarrow y = 3x -5$

This is the required answer .

3 0

3 years ago

Find 4 consecutive even integers where the product of the two smaller numbers is 72 less than the product of the two larger numb

WARRIOR [948]

Answer: 6, 8, 10, 12

Step-by-step explanation:

Given that x is the number, the 4 numbers would be

x, x + 2, x + 4, x + 6

so the two smallest numbers would be x and x + 2

and the two largest numbers would be x+4 and x+6

now set up an equation

x(x+2) = (x+4)(x+6) - 72

now FOIL

x^2 + 2x = x^2 + 6x + 4x + 24 - 72

combine like terms

x^2 + 2x = x^2 + 10x -48

subtract x^2 from both sides

2x = 10x - 48

subtract 2x from both sides

0 = 8x - 48

add 48 to both sides

48 = 8x

divide both sides by 8

6 = x

so the four numbers, x, x+2, x+4, and x+6 when you plug in x are equal to

6, 8, 10, 12

5 0

3 years ago

Brainlist Write all the factors of .49 Use commas to separate them.

Margarita [4]

.7 and 1 that's all.

7 0

4 years ago

Read 2 more answers

Use the table to work out the values of a, b,

Dvinal [7]

So to find the value of -3 do the following process:

Insert the -3 in the x’s in the equation on the top of the table

y= 5x -3x to the second power + 3

y= 5 (-3) -3(-3) to the second power + 3

Then continue to simplify the equation

y= -15 + 9 to the second power + 3

y= -15 + 84

y = 69

Y= 69 for the chart for -3

For b, c, and d insert the number in the x values and simplify like the previous equation.

If you are confused, feel free to ask questions. I hope this is effective and helps you in your studies.

4 0

2 years ago

The value of 2 in 204.75 is how many times in the value of the 2 in 103.52

SOVA2 [1]

10000 times the value of the other one

5 0

3 years ago