All categories

4 years ago

What is 17/18 + 1/20

Mathematics

1 answer:

MrMuchimi4 years ago

8 0

Answer:

179/180

Step-by-step explanation:

Step One

Find the prime factors of 18 and 20

18:3*3*2

20: 2 * 2 * 5

Step Two

You need two 2s two 3s and one 5 for the common denominator

The common denominator is 2 * 2 * 3 * 3 * 5 = 180

Step Three

Put the two fractions over 180

$\dfrac{17*10}{10*18} + \dfrac{1*9}{10*18}$

$\dfrac{170}{180} + \dfrac{9}{180}$

179/180

You might be interested in

What is x if x(x+3)(x+3)=0

timama [110]

Answer:

hello :

Step-by-step explanation:

x(x+3)(x+3)=0 means : x=0 or x+3=0 or x+3=0

x=0 or x=-3 or x=3

7 0

3 years ago

You paint 12 wall in 14 hour. At that rate, how long will it take you to paint one wall?

egoroff_w [7]

So for this question we have 12 wall in 14 hours and we want to know 1 wall in how many hours so you can say 14 /12 = ?/1 ⇒ ? ? = ( 1×14 )/12 =14 /12 = 1.166
i hope this be helpful :))
* merry Christmas *

7 0

4 years ago

Read 2 more answers

(02.03)Which statement is true about the result of a rigid transformation?

oksian1 [2.3K]

Answer:

the preimage will be congruent to the image

Step-by-step explanation:

4 0

3 years ago

1+Sin/Cos + Cos/1+Sin = 2Sec

Bond [772]

Step-by-step explanation:

Consider the left-hand side:

$\dfrac{1+\sin{\theta}}{\cos{\theta}} + \dfrac{\cos{\theta}}{1+\sin{\theta}}$

$\:\:\:\:= \dfrac{(1+\sin{\theta})^2 + \cos^2{\theta}}{\cos{\theta}(1+\sin{\theta})}$

$\:\:\:\:=\dfrac{1+2\sin{\theta}+\sin^2{\theta} + \cos^2{\theta}}{\cos{\theta}(1+\sin{\theta})}$

$\:\:\:\:=\dfrac{2+2\sin{\theta}}{\cos{\theta}(1+\sin{\theta})} =\dfrac{2(1+\sin{\theta})}{\cos{\theta}(1+\sin{\theta})}$

$\:\:\:\:= \dfrac{2}{\cos{\theta}} = 2\sec{\theta}$

7 0

3 years ago

(Evaluating Expressions) If x = 1, y = 3, and z = 2, what is the value of the expression 4xy + 3xz + 7y? *

pshichka [43]

Answer:

Step-by-step explanation:

4 x 1 x 3 + 3 x 1 x 2 + 7 x 3

4 x 3 + 3 x 1 x 2 + 7 x 3

12 + 3 x 1 x 2 + 7 x 3

12 + 3 x 2 + 7 x 3

12 + 6 + 7 x 3

12 + 6 + 21

8 0

3 years ago