Ask question

Ask question

All categories

3 years ago

9

The measure of angle n is 42º. what is the measure of angle k? parallelogram k l m n where k n is parallel to l m and k l is par

allel to m n enter your answer in the box.

1 answer:

Kipish [7]3 years ago

7 0

Becouse k and n are 'neighbours' so their sum are 180
so k=180-42=138

You might be interested in

Which is a y-intercept of the graphed function?<br><br> (–9, 0)<br> (–3, 0)<br> (0, –9)<br> (0, –3)

Nana76 [90]

Answer:

C is the answer

Step-by-step explanation:

The Y intercept of the graphed function would be,

(0,-9) because the graph (which is a function) intercepts on (0,-9) therefore the function's y-intercept is,

b= -9

8 0

3 years ago

Read 2 more answers

Explain how comparing 645 and 738 is different from comparing 645 and 649

Phantasy [73]

Its different because when u add 645 and 738 it equals 1,382 and when u add 645 and 649 it equals 1,294 so 1,382 is the greater number and its different from 1,294<span />

6 0

3 years ago

Laila read 36 pages in 4 hours. Which expression can be used to find the number of pages she read per hour?

scoray [572]

Lets see do 36/4 and you should have your answer

7 0

3 years ago

Read 2 more answers

HELP PLS ASAP WILL MARK BRAINLEIST IF YOU SHOW WORK

Vaselesa [24]

7) A. 1.8

divide 9 by 5

8) B. 0.444...

divide 4 by 9

9) You're correct: It's D. 3/5

Divide 1 1/5 by 2

3 0

3 years ago

Which of the following expressions is equivalent to a3 + b3?

lubasha [3.4K]

ANSWER
${a}^{3} + {b}^{3} = (a + b)( {a}^{2 } - ab + {b}^{2} )$

EXPLANATION

To find the expression that is equivalent to
${a}^{3} + {b}^{3}$
we must first expand
${(a + b)}^{3}$
Then we rearrange to find the required expression.

So let's get started.

${(a + b)}^{3} = (a + b) {(a + b)}^{2}$

We expand the parenthesis on the right hand side to get,

${(a + b)}^{3} = (a + b) ( {a}^{2} + 2ab + {b}^{2} )$

We expand again to obtain,

${(a + b)}^{3} = {a}^{3} + 3 {a}^{2}b + 3a {b}^{2} + {b}^{3}$

Let us group the cubed terms on the right hand side to get,

${(a + b)}^{3} = {a}^{3} + {b}^{3} + 3 {a}^{2}b + 3a {b}^{2}$

${(a + b)}^{3} = {a}^{3} + {b}^{3} + 3ab (a+ b)$

We make the cubed terms the subject,

${(a + b)}^{3} - 3ab (a+ b) = {a}^{3} + {b}^{3}$

We factor to get,

$(a + b)({(a + b)}^{2} - 3ab ) = {a}^{3} + {b}^{3}$

We expand the bracket on the left hand side to get,

$(a + b)( {a}^{2} + 2ab + {b}^{2} - 3ab ) = {a}^{3} + {b}^{3}$

We finally simplify to get,

$(a + b)( {a}^{2} - ab + {b}^{2} ) = {a}^{3} + {b}^{3}$

5 0

3 years ago

Read 2 more answers