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3 years ago

The sum of two numbers is 36 twice the first number minus the second number is 6 find the numbers

Mathematics

1 answer:

Ilia_Sergeevich [38]3 years ago

3 0

Answer:

14, 22

Step-by-step explanation:

x+y = 36

2×x - y = 6

=> x = 36 - y

=> 2×(36 - y) - y = 6

72 - 2y - y = 6

-3y = -66

3y = 66

y = 22

=> x = 36 - 22 = 14

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vova2212 [387]

Given:

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$\begin{gathered} \text{ar}^{2-1}\text{ = 18} \\ ar\text{ = 18} \\ \\ ar^{5-1}=\text{ 144} \\ ar^4\text{ =144} \end{gathered}$

Divide the expression for the fifth term by the expression for the second term:

$\begin{gathered} \frac{ar^4}{ar}\text{ = }\frac{144}{18} \\ r^3\text{ = }\frac{144}{18} \\ r\text{ = 2} \end{gathered}$

Substituting the value of r into any of the expression:

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$a_n\text{ = 9\lparen2\rparen}^{n-1}$

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1 year ago

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elena-s [515]

Answer:

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