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4 years ago

Which of the following equations is equivalent to x - y = 6?

Mathematics

2 answers:

Agata [3.3K]4 years ago

8 0

I believe the answer would be A. 2x-y=6 :)

slava [35]4 years ago

7 0

Answer with explanation:

The given linear equation ,whose equivalent equation we have to find is

x - y =6

→If you will multiply this linear equation by any real number ,m then that equation will be it's equivalent equation.

So, equivalent equation of , x-y=6 , will be

m x - my = 6 m, where , m is a real number.

→→None of the three equation are equivalent to : x- y=6

because ,none of the equation has been multiplied with the same real number on both sides.

≡None of these

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Find the perimeter of a rectangle with a length of 6x+3 and a width of -2x-5.

blsea [12.9K]

The simple way of calculating a perimeter is to add all of the sides.
For a rectangle this would equal 2 x length + 2 x width
P = 2(6x + 3) + 2(-2x - 5)
= 12x + 6 - 4x - 10
= 8x - 4

At a higher level both the length and width must be greater than zero (= zero is a trivial rectangle)
6x + 3 > 0
6x > -3
x > -0.5

-2x - 5 > 0
2x + 5 < 0 (multiplying by -1 reverses the inequality)
2x < -5
x < -2.5

This rectangle cannot exist as x cannot be < -2.5 and > -0.5 at the same time!

8 0

3 years ago

Read 2 more answers

Using the diagram, find sin B. Express your answer as a decimal rounded to the nearest hundredth, such as .86 or 0.86.

inessss [21]

Hi, thank you for posting your question here at Brainly.

This problem could be solved using the Law of Cosines, since we are given with the three sides. The equation goes,

b^2 = a^2 + c^2 - 2accosB. Substituting,

24^2 = 7^2 + 25^2 - 2(7)(25)cosB

Then B = 73.7 degrees. Therefore sinB or sin(73.7) = 0.96.

4 0

3 years ago

In the figure, PA and PB are tangent to circle O and PD bisects ∠BPA . The figure is not drawn to scale. For m

Mademuasel [1]

Angle AOC = 46° Find angle BPO

We have congruent right triangles PAO and PBO, right angles A and B.

So AOC=BOC=46 degrees,

PBO is a right angle so BPO is complementary to BOC, so 42 degrees

Answer: 42 degrees

3 0

3 years ago

What number will be multiplied to give -100 and be added to give 8

andrew11 [14]

Answer:

-12.5

Step-by-step explanation:

Hope it helps u

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3 years ago

Which is closest to the total surface area of a cylinder with a radius of 5 inches and a height that is equal to its diameter?

Pie

For this case, the surface area of the cylinder is given by:
A = 2 * pi * r * h + 2 * pi * r ^ 2
Where.
r: cylinder radius
h: cylinder height
Substituting values we have:
A = 2 * 3.14 * 5 * (2 * 5) + 2 * 3.14 * 5 ^ 2
A = 471
Answer:
The total surface area of the cylinder is:
A = 471

5 0

3 years ago

Read 2 more answers