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saw5 [17]
3 years ago
7

Need help! Find the area

Mathematics
1 answer:
sammy [17]3 years ago
7 0
7. the formula for octagon is a=2(1+radical2)s^2
s=4
a=about 77.25
8.
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20 3/10 rounded to the nearest whole number
julia-pushkina [17]
We know that 1/2 and above rounds up and below 1/2 rounds down

3/10 is lower than 1/2
When you round down you get 20

Your answer is 20

Hope this helped!
4 0
3 years ago
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A rectangular pyramid is sliced such that the cross section is perpendicular to its base and the cross section does not intersec
EleoNora [17]

Answer:

im pretty sure the answer is TRAPEZOID.

Step-by-step explanation:

5 0
3 years ago
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Find the number of permutations of the letters in twelve<br>​
kifflom [539]

Answer:

360

Step-by-step explanation:

Six letters in twelve with a repeated e would be 6! ÷ 2

6 0
3 years ago
Upper case letters like A and B represent events. For example, if the experiment is to roll one fair die, event A might be getti
frosja888 [35]

Answer:

P(A)

Step-by-step explanation:

-These uppercase letters are just used as notations/representations of probabilities and have absolutely no significance to the values obtained there in.

Hence the probability of an event A is written P(A)

3 0
3 years ago
Fill in the blank plz
Oduvanchick [21]

Step-by-step explanation:

a. Given => <em>m</em>∠5 = 40°

b. Given => <em>m</em>∠2 = 140°

c. Same Side Interior Angle Theorem => The same side interior angles must add up to 180°, which in this case, it does. m∠4 and m∠2 are alternate interior angles, and so there measurements are the same. 180 - 140 = 40

d. Both angles are part of the "same-side interior angles", which means that there measurements should add up to 180°. Note that m∠5 = 40°, and m∠2 = 140° (Given). Set the equation

m∠5 + m∠2 = 180

Plug in the number for each angle

40 + 140 = 180

180 = 180 (True).

e. It is proven that the above measurements are congruent with their corresponding parts. This means that a || b through <em>Converse of Same Side Interior angle Theorem</em>.

~

3 0
3 years ago
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