Your test grades in math this semester are 96, 100, 72, and 85. Find your mean grade. This is mean median and mode. A) 90.75 B) 88.25 C) 86.50 D) 84.00

Answers

Answer 1

Answer: B. 88.25

To find mean, you need to add all numbers given, then divide by the amount of numbers you have, therefore:

96 + 100 + 72 + 85
353

353 / 4

88.25

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What's the value of sec 60 degrees

Answers

Answer:

Step-by-step explanation:

$\sec \: 60 \degree = 2$

Help pls. it’s from khan academy

Answers

ANSWER: 7/6

step 1: Simplify both sides of the equation.
step 2:Subtract 2/3 from both sides.
step 3: Multiply both sides by 7/(-1).

Austin takes 1 minute and 45 seconds to run three-quarters of a circular track answer

Answers

Let's take full circular length is M
Time taken to reach M/3 is 1min and 45 seconds which is 105 seconds.

Time taken to reach full M
105 seconds / (1/3)
105*3
315 seconds
5 min 15 seconds

21 years 8 months =
months?

Answers

Answer:

260 months.

Step-by-step explanation:

Since there are 12 months in per year,

12 ⋅ 21 = 252.

There are 252 months in 21 years.

Then add the months left over.

252 + 8 = 260.

There are 260 months in 21 years, 8 months.

How far will a jet travel in 2 hours and 30 minutes if its average speed is 450 miles per hour?

Answers

Distance = rate x time

D = 450 mph x 2.5 h
D = 1,125 miles

Well we know that in 1 hour it goes 450 miles. So to figure out how far it goes in 2.5 hours multiply 450 by 2.5 =1125. The jet will go 1,125 miles in 2.5 hours :)

Tell whether or not the value is a solution to the inequality

Answers

Answer:

Yes, n = -2.9 is a solution to the given inequality.

Step-by-step explanation:

To determine if n = -2.9 is a solution to the inequality 10.4 ≥ -2n + 4.6, substitute the value of n into the inequality.

10.4 ≥ -2(-2.9) + 4.6

10.4 ≥ 5.8 + 4.6

10.4 ≥ 10.4

Since the last line of the inequality states that 10.4 is greater than or equal to 10.4, which is true, this means that the original inequality holds true when n = -2.9.

So, n = -2.9 is a valid solution to the inequality 10.4 ≥ -2n + 4.6.

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For the given differential equation Y'' - Y' - 30 = sin(9t), with initial conditions Y(0) = 6 and Y'(0) = 4, what is the Laplace transform equation for Y(s)? a) Y(s) = (s^2 + 4s + 6)/(s^2 + s - 30) - (9s)/(s^2 + 81) b) Y(s) = (s^2 - 4s - 6)/(s^2 - s + 30) + (9s)/(s^2 - 81) c) Y(s) = (s^2 + 4s - 6)/(s^2 - s - 30) - (9s)/(s^2 + 81) d) Y(s) = (s^2 - 4s + 6)/(s^2 + s + 30) + (9s)/(s^2 + 81)

Find the area of the triangle 1. C=110 degrees, a=6, b=10 2. B=130 degrees, a=92, c=30

The table gives sales data for a stationery store in any given two weeks. It lists the probability of the number of items purchased in a single transaction and the average amount spent per transaction. Items Purchased in a Single Transaction Probability Average Amount Spent 2 0.35 $12 3 0.17 $20 4 0.33 $28 5 or more 0.15 $36 Based on the data provided, transactions with items are likely to bring in the most income during the next two-week transaction period.

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