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3 years ago

Please help I’ll mark as brainliest

Mathematics

1 answer:

Vikki [24]3 years ago

3 0

Answer:

Step-by-step explanation:

Angle ABD is congruent to angle CBD--->Definition of perpendicular lines

Segment DB is congruent to Segment Db--->Reflextive property of congruence

Angle ADB is congruent to angle CDB--->angle bisector theorem

2 angles and 1 side is congruent, therefore <em><u>the triangles are congruent by the ASA Congruence Theorem</u></em>

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What is the sum of the interior angles of a nonagon?

SSSSS [86.1K]

To find the sum of the interior angles of a nonagon, divide it up into triangles... There are seven triangles... Because the sum of the angles of each triangle is 180 degrees... We get

7 * 180 = 1260°

So, the sum of the interior angles of a nonagon is 1260 degrees.

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3 years ago

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Five friends take a maths test

gulaghasi [49]

Answer:

Adam scored 60, Brandon scored 66, Chen scored 74, Damion scored 75, and Erica scored 75.

Step-by-step explanation:

Since five friends took the maths test, and Adam, Brandon, and Chen together together scored 200 marks; Brandon, Chen and Damion together scored 215; Chen, Damion and Erica together scored 224; and Damion and Erica scored more than Chen; While the five of them together scored 350 marks, to determine what are their individual scores the following calculations must be performed:

Adam + Brandon + Chen = 200

Damion + Erica = 150

Brandon + Chen + Damion = 215

Adam + Erica = 135

Chen + Damion + Erica = 224

Adam + Brandon = 126

Adam + Brandon = 126 + Chen = 200

Chen = 200 - 126

Chen = 74

Damion and Erica scored more than Chen

Chen + Damion + Erica = 224

74 + Damion + Erica = 224

Damion + Erica = 150

Damion = 75

Erica = 75

Brandon + Chen + Damion = 215

Brandon + 74 + 75 = 215

Brandon = 215 - 74 - 75

Brandon = 66

Adam = 350 - 75 - 75 - 74 - 66

Adam = 60

Therefore, Adam scored 60, Brandon scored 66, Chen scored 74, Damion scored 75, and Erica scored 75.

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2 years ago

In the fraction 7_8 the numerator or demomenator is 7

wlad13 [49]

If the fraction is 7/8, the top number would be the numerator. So the numerator is 7.

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3 years ago

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1) A fast food restaurant had 13 pounds of flour. If they split the flour evenly among 3

Ganezh [65]

Answer:

Each chicken would use 4.33 pounds of flour. Two whole numbers the answers relies is 4 and 5.

Step-by-step explanation:

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3 years ago

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Write the first ten terms of the geometric sequence a1 = 3, r = 1.1 to two decimal places. Am I supposed to multiply 3 by 1.1 te

Makovka662 [10]

The general formula for geometric series is tn = a×rⁿ⁻¹. In this question, a (or a1) is 3, and r is 1.1, therefore the first ten terms would be 3×1.1⁰ (3) , 3×1.1¹ (3.3), 3×1.1² (3.63) and so on up until you get to 3×1.1⁹ or 7.07.

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3 years ago