3 years ago

Is the sequence -3, 1, 5, 9,... An arithmetic sequence

Mathematics

1 answer:

kramer3 years ago

6 0

Answer:

Yes, it's an arithmetic sequence.

Step-by-step explanation:

Each term in this sequence is 4 more than the previous term. Therefore we have an arithmetic sequence.

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What is the value of 11−3m , when m = 2? (Please do it step by step because I dont know how to do this ;[ )

STatiana [176]

Substitute the variable for the value given.

11 - 3m becomes 11 - 3(2)

Now do the order of operations.

11 - 3(2) =
11 - 6 =
5

So, the answer is 5.

6 0

2 years ago

The table below shows the scores of a group of students on a 10-point quiz.Test ScoreFrequency3 54 15 16 27 28 49 310 1The mean

Katarina [22]

Explanation

Part A

We can use the formula below to find the mean.

$\text{Mean}=\sum ^{}_{}(\frac{fx}{f})$

We will then have;

$\begin{gathered} \text{Mean = }\frac{5\times3+4\times1+5\times1+6\times2+7\times2+8\times4+9\times3+10\times1}{19}=\frac{15+4+5+12+14+32+27+10}{19} \\ =\frac{119}{19}=6.2632 \end{gathered}$

Mean = 6.2632

Part B

Since the data set is odd.

$\begin{gathered} \text{Median}=\frac{(n+1)}{2}^{th}\text{observation} \\ =\text{Value of }\frac{\text{(19+1)}}{2}^{th}\text{observation} \\ =\text{value of 10th observation} \end{gathered}$

Answer: From the column of cumulative frequency cf, the median is 7

5 0

1 year ago

Solve the equation 5x + 8 - 3x = -10 OX= -9 O x = -1 ON=1 O X = 9

Leokris [45]

Answer:

its OX= -9

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Which expression is equivalent to 20c - 8d?

bagirrra123 [75]

C.

if you multiply the 4 on each numbers inside of the parentheses then you’ll get ‘20c-8d’

6 0

3 years ago

What is the intermediate step in the form (x+a)^2=b(x+a)

icang [17]

Answer:

Step-by-step explanation:

x²+2 ×x×5+5²=-20x+2×x×5-3

(x+5)²=-20+10x-3

(x+5)²=-10x-3

3 0

2 years ago