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Firlakuza [10]
2 years ago
9

Find a 20 given that a 3 = 9 and a 8 = 24

Mathematics
1 answer:
Nimfa-mama [501]2 years ago
8 0

Answer:

<u>a₂₀ = 60</u>

Step-by-step explanation:

<u>Given :-</u>

a₃ = 9

a₈ = 24

<u>To find :-</u>

a₂₀

<u>Solving :-</u>

Expand the given values.

a + 2d = 9 -(1)

a + 7d = 24 -(2)

Now subtract (1) from (2).

=> 5d = 15

=> d = 3

a = 9 - 2d

a = 9 - 6

a = 3

<u>Final answer :-</u>

a₂₀

= a + 19d

= 3 + 19(3)

= 3+ 57

= 60

<u>a₂₀ = 60</u>

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3 years ago
4s - (s - 12) = 1- (1 - 6s)?
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3 years ago
Convert 4/6 into a fraction with a denominator of 24
deff fn [24]
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3 0
3 years ago
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( simultaneous equations)
daser333 [38]

Answer:

See method below.

Step-by-step explanation:

m/n + n/3 = 2

2/m + n = 4    

First  eliminate the fractions by multiplying the first equation by 3n:-

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2 + mn = 4m..............(2)

Now we solve using substitution:-

From equation  (2):-

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Now substitute for m in equation (1):-

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This will not factor so we could solve this using graphical software.

To find the values of the variable m we substitute the found values of n into one of the original equations and solve for m.






6 0
3 years ago
Write the fraction as a product of a whole number 4/8, 8/12, 3/4
Mademuasel [1]
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8 0
3 years ago
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