Which expressions are equivalent to x + 2y + x + 2

Mathematics

1 answer:

nika2105 [10]2 years ago

3 0

Answer:

Where are the expressions??

Step-by-step explanation:

x + 2y + x + 2 simplified would be 2x+2y+2

Hope this helps :)

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In a different dimension, cows have $x+3$ legs, with 3 toes on each leg. Chickens have $2x-4$ legs, with 7 toes on each leg. If

Juli2301 [7.4K]

Answer:

20x-10

Step-by-step explanation:

Cows have $x+3$ legs and 3 toes on each leg, if we want to find the number of toes of ONE cow we have to multiply the legs by the toes giving the following:

$3(x+3) \quad (1)$

But we have two cows so (1) we have to multiply it by 2 giving a total of:

$2(3(x+3))\\6(x+3)\\6x+18 \quad (2)$

By the other hand chickens have $2x-4$ legs and 7 toes on each leg, if we want to find the number of toes we have to multiply the legs by the toes giving the following:

$7(2x-4)\\14x-28 \quad (3)$

To find the total amount of toes we have to add (2) and (3)

$(6x+18)+(14x-28)\\20x-10$

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2 years ago

Find sin theta if cot theta =-4 and cos theta < 0

asambeis [7]

Imagine the unit circle. The cot(theta) is a line from (0,1) to (-4,1). Imagine it is part of a triangle with the origin (draw it!).

Then the hypotenuse length is √(1+4²) = √17.

The sine rule says that sin(90)/√17 must equal sin(theta)/4, and sin(90)=1, so

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3 years ago

Read 2 more answers

What is X +7 equals 14

USPshnik [31]

Answer:

x = 7

Step-by-step explanation:

x + 7 = 14

Subtract 7 from both sides

x = 14 - 7 = 7

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