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3 years ago

Is (1,-4) a solution to the equation y=-2x true or false

Mathematics

1 answer:

Aleksandr-060686 [28]3 years ago

8 0

Answer:

False

Step-by-step explanation:

So, to start off we are going to input our (x,y) values into x and y.

-4 = -2(1)

Now, we are going to multiply 1 and -2!

-4 ≠ -2

Since -4 doesn't equal -2 we know that (1,-4) is not a solution to the equation y=-2x

Hope this Helps! :)

Have any questions? Ask below in the comments and I will try my best to answer. 

-SGO

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Please help i am giving away brainliest

Zepler [3.9K]

Answer:

The height for the original part is 10 cm

Never mind that the solid is standing at the angle of 60 degrees.

If you cut the bottom of the solid at the angle of 30 degrees, and put that part on the top of the solid,

the height is going to be exactly 10 cm.

So, we have... V = (10 * 4 * 3) / 8

or V = 5 * 2 * 1.5

Step-by-step explanation:

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2 years ago

Read 2 more answers

What is the solution to 3(x-1) -2(2x +1)= 8(x-1)

Alexxx [7]

i think this is it
4x - 3 = 36x - 8
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2 years ago

What is the perimeter of the triangle shown on the coordinate plane,to the nearest tenth of a unit ?

ollegr [7]

Answer:

25.6 units

Step-by-step explanation:

From the figure we can infer that our triangle has vertices A = (-5, 4), B = (1, 4), and C = (3, -4).

First thing we are doing is find the lengths of AB, BC, and AC using the distance formula:

$d=\sqrt{(x_2-x_1)^{2} +(y_2-y_1)^{2}}$

where

$(x_1,y_1)$ are the coordinates of the first point

$(x_2,y_2)$ are the coordinates of the second point

- For AB:

$d=\sqrt{[1-(-5)]^{2}+(4-4)^2}$

$d=\sqrt{(1+5)^{2}+(0)^2}$

$d=\sqrt{(6)^{2}}$

$d=6$

- For BC:

$d=\sqrt{(3-1)^{2} +(-4-4)^{2}}$

$d=\sqrt{(2)^{2} +(-8)^{2}}$

$d=\sqrt{4+64}$

$d=\sqrt{68}$

$d=8.24$

- For AC:

$d=\sqrt{[3-(-5)]^{2} +(-4-4)^{2}}$

$d=\sqrt{(3+5)^{2} +(-8)^{2}}$

$d=\sqrt{(8)^{2} +64}$

$d=\sqrt{64+64}$

$d=\sqrt{128}$

$d=11.31$

Next, now that we have our lengths, we can add them to find the perimeter of our triangle:

$p=AB+BC+AC$

$p=6+8.24+11.31$

$p=25.55$

$p=25.6$

We can conclude that the perimeter of the triangle shown in the figure is 25.6 units.

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3 years ago

If sin 15° =x and sin 75° =y then which one of the following correct

vaieri [72.5K]

Answer:

tan 75 =x/you is the my answer

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2 years ago

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Veseljchak [2.6K]

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