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luda_lava [24]
3 years ago
12

I have 88 apples, I gave 4 to everyone in my class, I have 8 left, how many people are in my class?

Mathematics
2 answers:
Elza [17]3 years ago
7 0

Answer:

20

Step-by-step explanation:

88-8=80

80/4=20

bogdanovich [222]3 years ago
6 0

Answer:

There are 20 students in your class

Step-by-step explanation:

88 apples - 4 * ( amount of students in class ) = 8 apples

88 - 4(c) = 8

88 - 4c = 8

Add 4c to both sides

88 = 8 + 4c

Subtract 8 from both sides

80 = 4c

Divide by 4 on both sides

c = 20

There are 20 students in your class

Hope this helps :)

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8 0
3 years ago
An acute triangle has sides measuring 10 cm and 16 cm. The length of the third side is unknown.
saveliy_v [14]

Answer: Choice B

12.5 < x < 18.9

================================================

Explanation:

We have a triangle with these side lengths:

  • a = 10
  • b = 16
  • c = x = unknown

Let's assume that b = 16 is the largest side of this triangle.

By the converse of the pythagorean theorem, we need b^2 < a^2+c^2 to be true in order for an acute triangle to happen.

So,

b^2 < a^2 + c^2\\\\c^2 > b^2 - a^2\\\\c > \sqrt{b^2-a^2}\\\\x > \sqrt{16^2-10^2}\\\\x > \sqrt{156}\\\\x > 12.4899959967968 \ \text{(approximate)}\\\\x > 12.5

Now let's consider the possibility that the missing side x is actually the longest side.

Using the same theorem as before, we would say,

c^2 < a^2 + b^2\\\\c < \sqrt{a^2 + b^2}\\\\x < \sqrt{10^2 + 16^2}\\\\x < \sqrt{356}\\\\x < 18.8679622641132 \ \text{(approximate)}\\\\x < 18.9\\\\

We found that x > 12.5 and x < 18.9

This is the same as saying 12.5 < x and x < 18.9

Put together, they form the approximate answer of 12.5 < x < 18.9

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What is the sum of i° + k°?
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Answer

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Step-by-step explanation:

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