MATHEMATICS MIDDLE SCHOOL

What’s the cot(180°) + (cos(180°)/sin(180°))

Answers

Answer 1

Answer:

Answer:

the answer is 'undefined'

Step-by-step explanation:

Cot is defines as (cos x)/(sin x)

So we can rewrite our expression as...

(cos 180°)/(sin 180°) + (cos 180°)/(sin 180°)

2(cos 180°)/(sin 180°)

Cos 180° = 1, sin 180° = 0 (you get these from the unit circle)

so we have

2(1/0) = 2/0, which is undefined, because we don't divide by zero

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List all of the numbers between 20 and 30 that are prime

Answers

23 and 29 are the only 2 prime numbers from 20 to 30

What is 5 over 18 divided by 2 over 6

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5/18 divided by 2/6 is as follows:
5/18 x 6/2: change division to multiplication then flip 6/2,
Next:
factor 6 and 18 as 1 and 3 since the gcf is 6.
New Equation is:
5/3 x 1/2 = 5/6

Write as a percent 11/12

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approximately 92 percent

Aprox. 92% im or 20%

How many calories does he consume

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I think it will be 135

60 calories because it is 180 divided by the number of rice cakes he eats!!:)

John is twice as old as her sister Jane. Four years ago, John was three times as old.What is John’s current age?

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$x-Jane\n2x-John\n\nx-4-Jane\ (4\ years\ ago)\n2x-4-John\ (4\ years\ ago)\n\n2x-4=3(x-4)\n2x-4=3x-12\ \ \ /+4\n2x-4+4=3x-12+4\n2x=3x-8\ \ \ /-3x\n2x-3x=3x-3x-8\n-x=-8\ \ \ /\cdot(-1)\nx=8\n\n2x=2\cdot8=16\n\n\nAnswer:John's\ current\ age\ is\ 16\ years.$

ROUND 753 TO THE NEAREST HUNDRED.

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Wouldn’t it be like 800??

it would be 800 because you moving it up 1 so yea