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shutvik [7]
3 years ago
13

NEED HELP I SUCK AT GEOMETRY (OFFERING 40POINTS)!!! best answer get brainlest

Mathematics
2 answers:
beks73 [17]3 years ago
8 0

Answer: B is

48

Step-by-step explanation:

Vera_Pavlovna [14]3 years ago
7 0

Answer:

angle b is 135 degrees

Step-by-step explanation:

a is 45 degrees, which means c is as well. a quadrilateral has 360 degrees, so you subtract the angles you already know from 360 to get 270 left, and divide that by 2 because there are 2 angles left that you dont know, b and d, and they are congruent. for angles d and b you get 135, so theres your answer, hope it helps :)

360-45-45=270

270/2=135

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A test is worth 80 points. Multiple-choice questions are worth 2 points, and
gavmur [86]

Answer:

<u>There are 10 multiple-choice questions and 15 short-answer questions in the test</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Test worth 80 points

Multiple-choice questions are worth 2 points

Short-answer questions are worth 4 points

Multiple-choice questions + Short-answer questions = 25

2. How  many multiple-choice questions are there?

Let's solve this problem, this way:

m = Multiple-choice questions

s = Short-answer questions

Our equations system is:

m + s = 25

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Solving for m in the 1st equation:

m + s = 25

m = 25 - s

Substituting m in the 2nd equation and solving for s:

2m + 4s = 80

2 * ( 25 - s) + 4s = 80

50 - 2s + 4s = 80

2s = 80 - 50

2s = 30

<u>s = 30/2 = 15</u>

Substituting s in the 1st equation and solving for m:

m = 25 - 15

<u>m = 10 </u>

<u>There are 10 multiple-choice questions and 15 short-answer questions in the test</u>

4 0
3 years ago
What times what equals 81 (besides 9×9)
Ksju [112]
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3 years ago
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Sergeeva-Olga [200]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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