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2 years ago

Find the value of a if given points are collinear (5,1) (3,2) and (1,a)

Mathematics

1 answer:

Ksenya-84 [330]2 years ago

8 0

9514 1404 393

Answer:

a = 3

Step-by-step explanation:

The x-values 5, 3, 1 form an arithmetic sequence. The y-values will do the same: 1, 2, a = 1, 2, 3 -- a common difference of +1.

a = 3

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If x = -2, then the equation is 2x = -4. True or False

Alex777 [14]

Answer:

true

Step-by-step explanation:

2(-2)=-4

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2 years ago

3.30, -√10, 17/5, √11 least to greatest

Vilka [71]

Answer:

-√10,√11 , 3.30, 17/5

Step-by-step explanation:

-√10,√11 , 3.30, 17/5

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3 years ago

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three couples go to the movies and sit together in a row of six seats. In how many ways can they arrange themselves if each coup

vagabundo [1.1K]

Answer:

Step-by-step explanation:

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2 years ago

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What is the area,in square centimeters,of a circle that has a circumference of 16 centimeters?

Ray Of Light [21]

Answer: $20.38\ cm^2$

Step-by-step explanation:

We know that the circumference of a circle is given by :-

$C=2\pi r$ , where r is the radius of the circle .

Given : Circumference of circle = 16 cm

Then, $16=2\pi r$

i.e $r=\dfrac{16}{2\pi}=\dfrac{8}{\pi}$ (1)

We know that the area of circle is given by :-

$A=\pi r^2$

i.e. $A=\pi (\dfrac{8}{\pi})^2$ [From (1)]

i.e. $A=\pi (\dfrac{64}{\pi^2})$

i.e. $A=\dfrac{64}{\pi}$

Put $\pi=3.14$

$A=\dfrac{64}{3.14}=20.3821656051approx20.38\ cm^2$

Hence, area of circle = $20.38\ cm^2$

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2 years ago

Coach Roberts ordered 16 trophies from the Finish Line sports shop to give to each player at the end of the season. Since this w

jok3333 [9.3K]

Answer:

$12.50

Step-by-step explanation:

Divide the total amount by the number of trophies

152 ÷16 = 9.5

than add 3 to your total

9.5 + 3= 12.5

since where dealing with money add a zero and a dollar sign.

$12.50

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2 years ago

Find the value of a if given points are collinear (5,1) (3,2) and (1,a)​

Find the value of a if given points are collinear (5,1) (3,2) and (1,a)