3 years ago

Find the common difference of the arithmetic sequence. 9, 13, 17, 21, . ..

Mathematics

1 answer:

sesenic [268]3 years ago

7 0

Step-by-step explanation:

4 is the common difference

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What is the solution to the system of equations below?

Pachacha [2.7K]

Answer:

(-8, 2)

Step-by-step explanation:

set these equations equal to each other

1/2x + 6 = -3/4x -4

5/4 x = -10

x = -10x4/5 = -40/5 = -8

plug this x into one of the equations

y = 1/2 (-8) + 6

y = -4 + 6

y = 2

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3 years ago

10.The function f(x) is shown below:

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A. -f(1)=1,f(2)=2,f(n)=2f(n-1)f(n-2);n>2

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2 years ago

For what values of a is the value of the binomial 2a−1 smaller than the value of the binomial 7−1.2a by 7?

Nimfa-mama [501]

ANSWER

$a = \frac{5}{16}$

EXPLANATION

We want to find the value of a for which the binomial, 2a-1 is smaller than the value of the binomial 7-1.2a by 7.

This means that, when we subtract 2a-1 from 7-1.2a, we should get 7.

$7 - 1.2a - (2a - 1) = 7$

Expand:

$7 - 1.2a - 2a + 1= 7$

Group similar terms:

$- 1.2a - 2a = 7 - 7 - 1$

$- 3.2a = - 1$

Divide both sides by -3.2,

$a = \frac{ - 1}{ - 3.2}$

$a = \frac{5}{16}$

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3 years ago

A larger number is twelve more<br>than a smaller. Their sum is<br>84. Find the numbers.

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Answer: bigger number is 48 and smaller number is 36

Step-by-step explanation:

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Solve 3[-x + (2 x + 1)] = x - 1.

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Answer:

x = -2

Step-by-step explanation:

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