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3 years ago

Which is greater, 1/4 or 9/20

2 answers:

6 0

9/20

You need to have the same denominator so multiply it by 5 on the bottom and top to get 5/20 then you can compare it 5/20 < 9/20

Talja [164]3 years ago

5 0

9/20 is bigger

hopes this helps luv >w

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Use trigonometric identities to solve each equation within the given domain.

Softa [21]

Answer:

A) X=pi/2 or X=-pi/2

B) X=pi/6 or X=-pi/6

C) X=pi/4 , 3pi/4, 5pi/4 and 7pi/4

D) X= 1-cos^2(x/2)

E) X= pi/3 +2pi N, 5pi/3+2pi N

Step-by-step explanation:

Don't even bother asking. :)

3 0

3 years ago

There 77 students 7:4

melisa1 [442]

Answer:

49:28

Step-by-step explanation:

7+4=11

77/11=7

7*7=49

4*7=28

6 0

3 years ago

Tyler bought 3 7/16 pounds of oranges. Write this amount using a decimal.

Whitepunk [10]

3(7/16) in your calculator should do it

6 0

3 years ago

You deposit $500 in a savings account that earns 2.5% interest compounded yearly. Find the balance in the account after 1 year.

Viktor [21]

Answer:

$512.5

Step-by-step explanation:

Given data

P= $500

R=2.5%

T= 1 year

The compound interest formula is

A=P(1+r)^t

substitute

A=500(1+0.025)^1

A=500(1.025)

A=500*1.025

A=$512.5

Hence the balance is $512.5

4 0

2 years ago

Here are two expressions with a mixing number:

photoshop1234 [79]

An irrational number is a real number that can't be written as a fraction: since all rational numbers ( $\mathbb{Q}$ ) are real numbers ( $\mathbb{R}$ ), the irrational numbers are all elements in $\mathbb{R}$ that don't belong to $\mathbb{Q}$ .

The rational numbers are closed with respect to sum and multiplication, which means that the sum/product of two rational numbers is a rational number.

Note that, of all the options, only $\sqrt{3}$ is irrational, because the other options are

$3 = \dfrac{3}{1},\quad 2 =\dfrac{2}{1},\quad 0.\overline{23} = \dfrac{23}{99}$

so they all can be written as fraction. This means that

$-\dfrac{5}{9} \times 3,\quad -\dfrac{5}{9} \times 2,\quad -\dfrac{5}{9} \times\dfrac{23}{99}$

are all rational numbers, because they are the multiplication of two rational numbers.

So, your only hope to get an irrational number is to multiply

$-\dfrac{5}{9}\times \sqrt{3}$

Expression 2 works exactly in the same way, because everything we said about the product is true for the sum as well.

5 0

3 years ago