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3 years ago

What is the difference of the two polynomials?

Mathematics

2 answers:

ehidna [41]3 years ago

5 0

(7y² + 6xy) - (-2xy + 3)

⇒ (-1 * -2xy) + (-1 * 3) = 2xy - 3

7y² + 6xy + 2xy - 3

7y² + 8xy - 3 Choice B.

mote1985 [20]3 years ago

4 0

B. 7y2 + 8xy – 3 is the answer

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Jimmy know the route from his house to his school, and can name each street along the way.

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A) Mental Map .......

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2 years ago

Which expression is equivalent to (x - 5)(4x2 – 3x + 8)?

ruslelena [56]

Answer:

(x - 5) (x (4 x - 3) + 8)

Step-by-step explanation:

4 x^3 - 23 x^2 + 23 x - 40

x (x (4 x - 23) + 23) - 40

(x - 5) (x (4 x - 3) + 8)

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2 years ago

What is the flow rate of the air in the pipeline if the cross sectional area of a pneumatic pipeline is 0.01 m2 and the speed of

e-lub [12.9K]

Answer:

0.2 m³/s

Step-by-step explanation:

Applying,

Q = vA.............. Equation 1

Where Q = Flow rate of air in the pipeline, v = flow velocity of the air in the pipeline, A = cross sectional area of the pneumatic pipeline.

From the question,

Given: v = 20 m/s, A = 0.01 m²

Substitute these values into equation 1

Q = 20(0.01)

Q = 0.2 m³/s

Hence the flow rate of air in the pipeline is 0.2 m³/s

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2 years ago

What is the area of this cube?

liubo4ka [24]

Surface Area of cube = 6× (side)^2 = 6×8×8 = 384 mm^2

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2 years ago

Read 2 more answers

What's x ? find the indicated side of the right triangle

expeople1 [14]

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Answer: $\textsf{x = 6}$

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Given: $\textsf{The image provided with 2 angles and one side}$

Find: $\textsf{Solve for the unknown side of x}$

Solution: In order to determine the length of x we need to use some trigonometric functions. Using Soh Cah Toa we can see that we can either use 30 degrees or 60 degrees. We will stick to 60 and we can see that the opposite side is 3 and the hypotenuse is x meaning that we need to use sin. Plug in the values and solve for the unknown.

Plug in the values