2 years ago

use the order of operations to simplify this expression. exspress your answer in the simplest form. 1/4 + 1/2 ÷ 2/8

Mathematics

1 answer:

elixir [45]2 years ago

7 0

Answer:

9/4

Step-by-step explanation:

This is quite simple you do 1/2 divided by 2/8 which will become multiplication. Then its that number plus 1/4

you get a answer of

9/4 in fraction form

2.25 in decimal form

2 1/4 in mixed fraction form

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Which angle is an x-intercept for the function y = cos(1/2x)

KonstantinChe [14]

For the function
y = cos(1/2 x)
The x-intercept can be calculated by equating the function to zero and solving for x. So,
y = cos(1/2 x) = 0
1/2 x = arc cos 0
1/2 x = 90° +180°n
x =2 (90° +180°n)
x = 180° + 360°n
or converting to radians
x = (180° + 360° n)(π/180°)
x = π + 2π n
where n is any whole number

if n = 0
x = π

Therefore, the x-intercept is π or π+2π n

3 0

2 years ago

Read 2 more answers

There were 390 people in a cinema. There were 175 women and 215 men. Work out the percentage of men in a cinema.

Keith_Richards [23]

Answer:

55.13%

Step-by-step explanation:

Your comparison is 215 men out of 390 people.

Divide 215 by 390 and then multiply by 100 to get your percentage

215 ÷ 390 = 0.5513

0.5513 × 100 = 55.13%