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Alexandra [31]
2 years ago
7

Rewrite 4/21 and 2/9 so that they have a common denominator,

Mathematics
2 answers:
Agata [3.3K]2 years ago
8 0
The common denominator between 21 and 9 is 63, the LCM OF them two numbers is 63
So…

12/63 and 14/63
adell [148]2 years ago
7 0

Answer:

\frac{12}{63} \: and \:  \frac{14}{63}

Step-by-step explanation:

The lowest common multiple between 21 and 9 is 63 as 21 = 21, 42, 63

9 = 9, 18, 27, 36, 45, 54, 63

therefore the common denominator is 63

\frac{4}{21}  =  \frac{?}{63}

21 × 3 = 63, so do the same to the numerator.

4 × 3 = 12 the numerator is 12

\frac{4}{12}  =  \frac{12}{63}

let's do the same to 2/9

\frac{2}{9}  =  \frac{?}{63}

9 × 7 = 63, so do the same to the numerator.

2 × 7 = 14

the numerator is 14

\frac{2}{9}  =  \frac{14}{63}

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Given that the points (12, –4) and (–36, 8) lie on a line, what is the equation of the line?
Alinara [238K]

The equation of the line passing through the points (12, –4) and (–36, 8) is y = -1/2 x  - 1

The formula for calculating the equation of a line is expressed as:

y = mx + b

m is the slope of the line

b is the y-intercept

Given the coordinate points expressed as (12, –4) and (–36, 8)

Get the slope:

m = 8+4/-36-12

m = 12/-48

m = -1/4

Get the y-intercept "b"

Recall that y = mx + b

8 = -1/4(-36) + b

8 = 9 + b

b = 8 - 9

b = -1

Get the required equation.

Recall that y = mx + b

y = -1/2 x + (-1)

y = -1/2 x - 1

Hence the equation of the line passing through the points (12, –4) and (–36, 8) is y = -1/2 x  - 1

Learn more here: brainly.com/question/17003809

3 0
3 years ago
Evaluate. 72 - 3 + 9 × 8 ÷ 2 w =
d1i1m1o1n [39]

Answer:

Step-by-step explanation:

Request of activities so increase then division, at that point deduction and expansion.  

9*8 = 72  

72/2 = 36  

72-3 = 69  

69+36 = 105

Another way of saying it is:

Utilize the request for tasks to improve on mathematical articulations. The request is brackets, types and roots, augmentation and division, expansion and deduction. Duplication and division are "something similar" so you would utilize the first that happens from left to right.  

Bit by bit clarification:  

7^2 - 3 + 9 x 8 ÷ 2  

49 - 3 + 9 x 8 ÷ 2  

49 - 3 + 72 ÷ 2  

49 - 3 + 36  

49 - 39  

W=10  

Brainliest?

6 0
3 years ago
Read 2 more answers
Please help I’ll give brainiest answer
marishachu [46]
Mass of 1 sheet = (160 g/m^2)*(1/8 m^2) = 160/8 g = 20 g

mass of 25 sheets = (25 sheets)*(20 g/sheet) = 25*20 g = 500 g
8 0
4 years ago
Which set of ordered pairs represents y as a function of x? O {(-8,3), (0,7), (2,-4), (-3,7)} O {(-4,0), (-1,3), (-9,-3), (-4,-8
Arada [10]

Answer:

hsdmcajkcjwhvbehvfjwgfu

Step-by-step explanation:

its nothing compared to college !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

8 0
3 years ago
I really don’t know this!!
postnew [5]

Answer:

vnghjgmgmghgmkjvcvghjk

Step-by-step explanation:

6 0
3 years ago
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