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3 years ago

PLZ HELP ME

Mathematics

1 answer:

Luda [366]3 years ago

8 0

Answer:

3x³y - 2x²y²+ xy³

Step-by-step explanation:

Distribute

6xy · 1/2x²

6 × 1/2 = 3

x · x² = x³

y = y

3x³y

6xy · - 1/3 xy

6 · 1/3 = 2

x · x = x²

y · y = y²

- 2x²y² (do not forget sign)

6xy · 1/6 y²

6 · 1/6 = 1

x = x

y · y² = y³

xy³

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Plzz help me to solve this qns please

tatiyna

9514 1404 393

Answer:

₹14000

Step-by-step explanation:

Let c represent the cost price, and m represent the marked price.

c × (1 +40%) = m

m × (1 -15%) - c = ₹1900

Using the first expression for m, the second equation becomes ...

1.40c×0.85 -c = ₹1900

0.19c = ₹1900

c = ₹1900/0.19 = ₹10000

Then the marked price was ...

m = 1.40c = 1.40×₹10000 = ₹14000

The marked price was ₹14000.

_____

The selling price was ₹11900.

7 0

3 years ago

Calculate the length of a triangle if another length is 15 feet and the hypotenuse is 39 feet.

Y_Kistochka [10]

We have to use Pythagorean theorem that says :

$a^2+b^2=c^2\\\Rightarrow a^2+15^2=39^2\\a^2=39^2-15^2\\a=\sqrt{1296}\\a=36$

The missing length of the triangle is : 36 feet

3 0

3 years ago

What are the rules for rotating a figure about the origin?

Anastaziya [24]

Step-by-step explanation:

90 Degree Rotation. When rotating a point 90 degrees counterclockwise about the origin our point A(x,y) becomes A'(-y,x). ...

180 Degree Rotation. When rotating a point 180 degrees counterclockwise about the origin our point A(x,y) becomes A'(-x,-y). ...

270 Degree Rotation.

6 0

3 years ago

mustafa is putting a sidewalk using two diffrent style bricks, one style brick is 8 inches long, and the other style brick is 6

Svetlanka [38]

Answer:

8y+6y=288

Step-by-step explanation:

8y+6y= 12y

12y=288

12y divide by 12 = 288 divided by 12 =

y=24

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3 years ago

What is 23/40 as a decimal

DanielleElmas [232]

It is 0.575000. All you have to do is divide the numerator by the denominator.

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3 years ago