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3 years ago

14

How is adding mixed numbers with unlike denominators the same as adding fractions with unlike denominators? How is it different?

1 answer:

Sedaia [141]3 years ago

5 0

To add a mixed number you must first convert it into a heavy headed fraction eg. 12/4
Then you must find a common denominator for all of the fractions like you normally do for regular addition of fractions
After you have added them you must convert the heavy headed fraction back into a mixed number by seeing how many times the numerator goes into the denominator

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Add and subtract polynomials

ziro4ka [17]

Answer: $8w^2-7w+7$

Step-by-step explanation:

$x=7w^2+4w-6\\y=w^2-11w+13\\x+y=?$

$7w^2+4w-6+w^2-11w+13$

$8w^2-7w+7$

4 0

3 years ago

Given that cosec A= -2, sec B= -2, A and B lie in the same quadrant. Find sin (2A+2B)

sergij07 [2.7K]

Answer:

sin (2A+2B) = 0

Step-by-step explanation:

Given that,

cosec A= -2 and sec B= -2, A and B lie in the same quadrant.

We need to find the value of sin (2A+2B).

$A=cosec^{-1}(-2)\\\\=-30$

And

$B=\sec^{-1}(-2)\\\\=120^{\circ}$

To find the value of sin (2A+2B) as follows :

sin [2(-30)+2(120)] = sin (-60+240)

=sin (180)

= 0

So, the value of sin (2A+2B) is qual to 0.

7 0

2 years ago

HELP PLEASE I WILL MARK YOU BRAINIEST

kotegsom [21]

Step-by-step explanation:

In total there is 6 cups of soup.

So lets put that in /8 form

48/8 and do the same to the other 27/8

So when you see it takes 27/8 for one you know she can only do one full serving.

21/8 is what's left

So 2 5/8 is left

She is 6/8 off of one more serving

I'm sorry this is all I can do. I hope you can use this info to answer

8 0

3 years ago

You are a woodworker who is designing a custom doghouse. The doghouse will have an A frame, with the front and back of the house

kondor19780726 [428]

Answer:

b

Step-by-step explanation:

it is

7 0

3 years ago

Shtirlitz [24]

Answer:

x= -1.24, 3.24

Step-by-step explanation:

x² – 2x=4

Bring 4 over

x² – 2x - 4=0

Quadratic formula:

if ax²+bx+c=0

$\frac{b(+-)\sqrt{b^2-4ac} }{2a}$ the (+-) = ±

$\frac{-(-2)+\sqrt{(-2)^2-4*1*(-4)} }{2*1}$ = 3.24

$\frac{-(-2)-\sqrt{(-2)^2-4*1*(-4)} }{2*1}$ = -1.24

3 0

3 years ago