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3 years ago

Identify the expicit function for the sequence in the table.

Mathematics

1 answer:

marysya [2.9K]3 years ago

4 0

It is B. Because the formula for sequences in in the form of a+(n-1)d where a is the first number in the sequence, n is the nth term(position) and d is the difference between terms. So if a=9 and d=5 the answer is 9 + (n-1)*5

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Need help for question 8 and 9. I need the equation that’s passes through the points!

dsp73

Answer:

Step-by-step explanation:

Question 8

Let the equation of a line passing through two points $(x_1,y_1)$ and $(x_2,y_2)$ is given by,

y = mx + b

Here, m = slope and y-intercept = b

Since, m = $\frac{y_2-y_1}{x_2-x_1}$

For two points (1, 4) and (5, 8),

m = $\frac{8-4}{5-1}$

m = 1

Equation will be,

y = (1)x + b

y = x + b

Since, this line passes through (1, 4),

4 = 1 + b

b = 3

Therefore, equation of the line will be,

y = x + 3

Question 9

Let the equation is y = mx + b

m = $\frac{y_2-y_1}{x_2-x_1}$

For two points (2, 10) and (6, 4)

m = $\frac{10-4}{2-6}$

m = $-\frac{3}{2}$

By substituting the value of 'm' in the equation,

y = $-\frac{3}{2}x+b$

Since, this line passes through (2, 10)

10 = $-\frac{3}{2}(2)+b$

b = 10 + 2

b = 12

Therefore, equation of the line will be,

$y=-\frac{3}{2}x+12$

4 0

3 years ago

Find m <br> Help, I really don't understand this

Irina18 [472]

$m\angle B=m\angle C\\
m\angle C=180-100=80 \Rightarrow m\angle B=80$

3 0

3 years ago

Read 2 more answers

What is the period of f : R→R, f(x) = tan(x 3)?

Ksivusya [100]

12X is the period of what is the period of f : R→R, f(x) = tan(x 3)?

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3 years ago

I need help with identifying parallel and perpendicular lines from equations.

Semenov [28]

For the first one, lines one and two are perpendicular because they have opposite slopes. Parallel lines share the same slope

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3 years ago

letters cost $1 each to send in the mail and packages cost $5 each the equation x + 5y = 25 describes how many letters and packa

Vlada [557]

Answer:

y is the packages in the equation

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3 years ago