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Masja [62]
3 years ago
5

PLEASE HELP! IT’S 40 POINTS! What is the area of this octagon?

Mathematics
1 answer:
Zinaida [17]3 years ago
3 0

Answer:

B) 59 cm²

Step-by-step explanation:

4x8=32

2x3=6

3x7=21

32+6+21=59 cm²

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Identify the y intercept of the parabola below
Stells [14]

Answer:

The y intercept for this one is two.

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2 years ago
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Identify the property shown by the equation.
IceJOKER [234]

7 + (5 + 8) = (7 + 5) + 8 is showing associative property as it is in the form a + (b + c) = (a + b) + c.

Given: To identify the property for the following:

7 + (5 + 8) = (7 + 5) + 8

What are the different types of properties?

1. Commutative Property: Given two numbers a and b, then

a + b = b + a where a, b are some real numbers.

Note: It is commutative on the binary operator of addition (+).

2. Associative Property: Given three numbers a, b and c, then

(a + b) + c = a + (b + c) where a, b and c are some real numbers

Note: It is associative on the binary operator of addition (+).

3. Identity Property: Given some real number a. Then there exist some number (say for instance 1) within the real domain such that a ×  1 =  a.

For this demonstration above 1 is the identity element.

4. Distributive Property: Given three numbers a, b and c, then

a × (b + c) = a × b + a × c, where a, b and c are some real numbers.

Note: It is distribute over the binary operator of addition  (+) and multiplication (×)

So, for the given question: 7 + (5 + 8) = (7 + 5) + 8, it is in the form of

a + (b + c) = (a + b) + c, which shows the associative property over the binary operator of addition.

Hence 7 + (5 + 8) = (7 + 5) + 8 is associative.

Know more about "properties of equation" here: brainly.com/question/5637942

#SPJ9

5 0
1 year ago
A local park is adding a new 14 ft long slide to the playground. The vertical height of the slide is h. The distance from the bo
Luden [163]
If a local park is adding a new 14 ft long slide to the playground, and the vertical height of the slide is H, then the correct answer to the following given statement or question above is 7 meters long.
6 0
3 years ago
The following data represent the muzzle velocity​ (in feet per​ second) of rounds fired from a​ 155-mm gun. For each​ round, two
Cloud [144]

Answer:

Step-by-step explanation:

A. Two measurements(AandB)are taken on the same round.\oIs there a difference in the measurement of the muzzle velocity between device A and device B at the α=0.01 level of significance? Note: A normal probability plot and boxplot of the data indicate that the differences are approximately normally distributed with no outliers.

B. Construct a 99% confidence interval about the population mean difference. Compute the difference as device A minus device B. Interpret your results. The confidence interval is (__,__)?

Answer:

Open chart in StatCrunch --- Stat --- T Stats --- Paired --- Enter values: Sample 1 = A, Sample 2 = B --- Click on Confidence Interval… and enter Level which is my #%. --- Compute

7 0
3 years ago
3 hours 20 minutes + 1 hour 48 minutes =___ days
Elenna [48]

zero days, 3 hours + 20 min + 1 hour + 48 min = 308 min which is about 5 hours.

6 0
3 years ago
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