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cricket20 [7]
3 years ago
12

Given: △ABC, m∠B=90° AB=12, BC=16, BK⊥AC Find: AC and BK. PLS HELP ME!!!!!!

Mathematics
1 answer:
Monica [59]3 years ago
5 0
The blue that i circle idont know if the answer is true.. i m just trying

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Question number 8. Prove that 3 + √5 is an irrational number.​
Marina86 [1]

Answer :

Let's assume the opposite of the statement i.e., 3 + √5 is a rational number.

\\  \sf \: 3 +  \sqrt{5}  =  \frac{a}{b}   \\  \\   \qquad \: \tiny \sf{(where \:  \: a \:  \: and \:  \: b \:  \: are \:  \: integers \:  \: and \:  \: b \:  \neq \: 0)} \\

\\  \sf \:  \sqrt{5}  =  \frac{a}{b}  - 3 =  \frac{a - 3b}{b}  \\

Since, a, b and 3 are integers. So,

\\ \sf \:  \frac{p - 3b}{b}  \\  \\  \qquad \tiny \sf{ \: (is \:  \: a \:  \: rational \:  \: number \:) } \\

Here, it contradicts that √5 is an irrational number.

because of the wrong assumption that 3 + √5 is a rational number.

\\

Hence, 3 + √5 is an irrational number.

7 0
3 years ago
Michelle has to find the decimal equivalent of 15 yards. How can she do
kipiarov [429]

Answer:

15.0 yards

Step-by-step explanation:

8 0
3 years ago
Which expression is equivalent to b^m/b^n ? A. bm-n B. bmn C. bm n D. bm+n
sergij07 [2.7K]
\cfrac{b^m}{b^n}=b^{m-n}
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3 years ago
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Find the absolute value of negative 15. please help :)
sammy [17]

Answer:

the answer is 15.

Step-by-step explanation:

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3 years ago
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Please Help!!!!!! Me On These Questions!!!!!
baherus [9]
Consecutive odd or even integers are of the form x, x+2.
So we have x(x+2) = 63, where Diane's age = x.

x²+2x = 63.
x² + 2x - 63 = 0
(x + 9)(x - 7) = 0
x = -9, or 7.

Since -9 is awfully young, we rule it out and say Diane's age is 7, and her sister is 9.

7 0
2 years ago
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