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Andrei [34K]
3 years ago
7

Pls I need help this

Mathematics
1 answer:
Citrus2011 [14]3 years ago
6 0

Answer:

the third side is 4.

Step-by-step explanation:

Using  Pythagorean theorem of a^2 + b^2 = c^2 for right triangles, substitute

the numbers to show (\sqrt{65})^{2} + b^{2} = 9^{2} and solve for b. The square root and square cancel each other out, so you get 65 + b^{2} = 81.

Subtract 65 from both sides to get b^{2} = 16.

Then take the square root of both sides to get b = \sqrt{16} which equals 4.

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The sum of three consecutive even integers is 36. Let x represent the least consecutive integer.
lubasha [3.4K]
The integers are x, x + 2 and x + 4

x + x + 2 + x + 4 = 36
3x + 6 = 72
3x = 36 - 6 = 30
x = 30/3 = 10

The least numbers is 10
Therefore, the numbers are 10, 12 and 14
4 0
3 years ago
A survey of high school juniors found that 82% of students plan on attending college. If you pick three students at random, what
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3 years ago
Read 2 more answers
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OLga [1]
5•17.98=89.9

$89.9 is needed
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3 years ago
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HELP PLZ DUE RN BRAINIEST TO WHOEVER RIGHT
stealth61 [152]

Answer:

x = 11, -1

Step-by-step explanation:

First, let's identify what the quadratic formula is:

x = [-b ± √(b² - 4(a)(c))] / 2

Our equation is written in standard form:

ax² + bx + c = 0

x² - 10x - 11 = 0

Let's plug in what we know.

x = [-(-10) ± √((-10)² - 4(1)(-11))] / 2

Evaluate the exponent.

x = [-(-10) ± √(100 - 4(1)(-11))] / 2

Simplify the negatives.

x = [10 ± √(100 - 4(1)(-11))] / 2

Multiply.

x = [10 ± √(100 + 44)] / 2

Simplify the parentheses.

x = [10 ± √(144)] / 2

Simplify the radical (√)

x = [10 ± 12] / 2

Evaluate the ±.

x = [10 + 12] / 2

x = [22] / 2

x = 11

or

x = [10 - 12] / 2

x = [-2] / 2

x = -1

Your answers are x = 11, -1

Hope this helps!

8 0
3 years ago
there are five people in a room each person shakes the hand of every person exacally once how many handshakes or exchanged
nalin [4]
25  because there's 5 people so you take 5 times 5
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3 years ago
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