3 years ago

1. What is the mean for the following scores: 2, 5, 4, 1, 8? A. 3 B. 4 c. 5 20

Mathematics

2 answers:

atroni [7]3 years ago

8 0

Answer to your question is:

B. 4

Explanation:

2 + 5 + 4 + 1 + 8 = 20

20 ÷ 5 = 4

Kamila [148]3 years ago

8 0

Answer: B: 4

Step-by-step explanation:

2+5+4+1+8= 20

20/5= 4

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The first term of an arithmetic sequence is -3 and the fifteenth term is 53. What is the common difference of the sequence?

Maru [420]

C: 4 is the right answer

Step-by-step explanation:

Given

a1 = -3

a15 = 53

We know that explicit formula for the arithmetic sequence is:

$a_n=a_1+(n-1)d$

For the 15th, term it will be

$a_{15}=-3+(15-1)d\\53=-3+14d$

Adding 3 on both sides

$53+3 = -3+3 + 14d\\56 = 14d$

Dividing both sides by 14

$\frac{56}{14}=\frac{14d}{14}\\d=4$

Hence,

C: 4 is the right answer

Keywords: Arithmetic sequence, Common Difference

Learn more about arithmetic sequence at:

#LearnwithBrainly

4 0

3 years ago

Zoe went on a shopping trip to Fairfax. She purchased a barbecue grill originally priced at $600 but discounted 50%. If sales ta

sergey [27]

Answer:

The total cost is $345

Step-by-step explanation:

Zoe purchased a barbecue grill originally priced at $600

Discount % = 50%

So, cost after discount = $600-50\%(600)$

Cost after discount =300

Sales tax in Fairfax is 15%

So, cost including tax = 300+0.15(300)

Cost including tax = 345

Hence The total cost is $345

6 0

3 years ago

Help quick! Sheet attached 30 points on offer!

ddd [48]

Answer:

Step-by-step explanation:

1/2 of 96 = 48

1/2 of 48 = 24

48 + 24 = 72

8 0

3 years ago

Ryan planted 1/6 of his garden with green peppers and 1/6 of his

joja [24]

Answer:1/6 plus 1/6 is 1/3

Step-by-step explanation:

7 0

3 years ago

best answer will be awarded the brainliest and 5 stars which answer shows 4x4x4x4x4x4x4x4x4x4x4 correctly in exponential form se

oksian1 [2.3K]

4^11

4 = 4^1
4x4 = 4^2
etc

4 0

3 years ago

Read 2 more answers