3 years ago

In the diagram below , what is the value of a?

Mathematics

1 answer:

ipn [44]3 years ago

5 0

Step-by-step explanation:

solution

let,

AB = 9

AC = 9 + 3a - 6

AD = 12

AE = 12 + 20

now

AB/AD = AC/AE

or, 9/12 = 3 + 3a / 22

by cross multiply

or, 9×22 = 12×(3 + 3a)

or, 198 = 36 + 36a

or, (198 - 36)/36 = a

or, 4.5 = a

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barxatty [35]

Answer:

48,558

Step-by-step explanation:

The function which models the relationship between the elapsed time, t in years, since 2010 and the town's population, P(t), is given as:

$P(t)=36800\cdot2^{^\dfrac{t}{25}}$

Now, 2020-2010=10 Years

Therefore we are required to calculate the population of the town 10 years after.

To do this, we simply substitute t=10 in the function.

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3 years ago

1:X = X:25. What number can replace X?

igor_vitrenko [27]

5 is your answer

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Note that the colon can act like a fraction.

Simplify 5/25.

(5/25)/(5/5) = 1/5 = 1/5

5 is your answer

hope this helps

7 0

3 years ago

Find the slope of the line that passes through the pair of points (7/20,8/3) and (3/8,7/9)

Helen [10]

Slope=(y2-y1÷x2-x1)
7/20= x1
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3 years ago

When a national sample of heights of kindergarten children was? taken, a student was told that he was in the 20th percentile.

Nutka1998 [239]

Answer:

this question doesnt make sense as its like half of it

6 0

3 years ago

3/12 1/6 and 1/3 same denominator

iogann1982 [59]

Yes because if you turn 6 and three to 12 then you have 2/12 and 4/12!

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