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3241004551 [841]
3 years ago
12

Please answer number 1 I give brainliest thank you!

Mathematics
2 answers:
prohojiy [21]3 years ago
5 0

Answer:

Option C

Step-by-step explanation:

Add all grades together:

79 + 80 + 92 + 92 + 81 + 100 + 88 + 98 + 71 + 100 + 91 + 90 = 1062

Divide the total by the number of grades in the set:

1062/12 = 88.5

The average of the grades is 88.5%, therefore Option C should be the correct answer.

goldfiish [28.3K]3 years ago
4 0

Answer:

Step-by-step explanation:

79+80+92+92+81+100+88+98+71+100+91+90

=1,062/12 = 88.5

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5 0
3 years ago
Given: △ABC; AB=BC, m∠BDA = 60°, BD=4 cm, BD ⊥ BA . Find: DC, AC.
vekshin1

Answer:

DC = 10.93 cm ,  AC = 9.8 cm

Step-by-step explanation:

From trigonometry;

⇒ Tan 60 = AB/BD

⇒AB = BD Tan 60 ( where BD = 4 cm )

⇒ AB = 6.93 cm

Also, AB=BC , therefore;

⇒ BC = 6.93 cm

⇒ Cos 60 = BD/AD

⇒ AD = BD/ Cos 60 = 4/Cos 60

⇒ AD = 8 cm

From Pythagoras theorem;

⇒ AC^{2} = AB^{2} + BC^{2} = (6.93)^{2} + (6.93)^{2}

⇒ AC = \sqrt{96.05} = 9.80 cm

⇒ DC = BD + BC = 4 + 6.93

⇒ DC = 10.93 cm

8 0
3 years ago
Define the pattern 1,3,9,27 next three terms
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81 , 243 , 729 the pattern is mutiply each by three
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Are there any integers between 0 and 1? Explain
zvonat [6]

Answer:

No

Step-by-step explanation:

Integers are whole numbers (not decimals or fractions) that are either <u>positive,</u> <u>negative</u>, or <u>zero</u>.

There are no whole numbers (integers) between 0 and 1.

4 0
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What's the answer? pls help
Sunny_sXe [5.5K]

Answer: -2

I'm not so sure what it means by slope, but because I saw a pattern between x and y (it decreases by 2 every x value and decreases by 4 every TWO x values) values so I would pick -2. BUT I don't know if the answer is -4.

Step-by-step explanation:

7 0
3 years ago
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