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arsen [322]
3 years ago
10

Find the cotangent.

Mathematics
2 answers:
forsale [732]3 years ago
7 0
You need more information, which one is the adjacent and opposite (it’s either 5/12 or 12/5)
Nataly_w [17]3 years ago
6 0
Use Socratic it will give you the answer
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ANSWEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE NOWEWEW
masya89 [10]

The first one is not equivalent. The second one is equivalent.

4 0
3 years ago
Read 2 more answers
Jotham needs 70 liters of a 50% alcohol solution. He has a 30% solution and an 80% solution available. How many liters of
Nuetrik [128]

x+y=70. (30x+80y)/(100x+100y)=50/100

6 0
3 years ago
Read 2 more answers
What is the base of the natural logarithm function f(x) = ln(x)? Explain how you know.
Zarrin [17]

Answer:

base = e

Step-by-step explanation:

The general log function is defined as

f(x)=\log_a x             .... (1)

where, a is the base of the log function.

The natural logarithm function is

f(x)=\ln x

It can be rewritten as

f(x)=\log_e x              .... (2)

where, e is a constant or Euler's number is:

e ≈ 2.71828183

On comparing (1) and (2) we get

a=e

Therefore, the base of the natural logarithm function is e.

4 0
3 years ago
Change<br> 9 2/5<br> into an improper fraction
Rzqust [24]

Answer:

below

Step-by-step explanation:

9 2/5 = [(9*5)+2]/5=(45+2)/5=47/5

8 0
3 years ago
Solve for a and b. please help.
Pachacha [2.7K]

Answer:

a= 22.5

b= 37.5

Step-by-step explanation:

<u>In</u><u> </u><u>△</u><u>BCD</u><u>:</u>

Applying Pythagoras' Theorem,

a² +30²= b²

a² +900= b² -----(1)

<u>In</u><u> </u><u>△</u><u>ABC</u><u>:</u>

Applying Pythagoras' Theorem,

b² +50²= (40 +a)² -----(2)

Substitute (1) into (2):

a² +900 +50²= 40² +2(40)(a) +a²<em> </em><em> </em><em> </em><em> </em><em> </em><em>(</em><em>expand</em><em> </em><em>bracket</em><em>)</em>

a² +900 +2500= 1600 +80a +a²

a² +3400= a² +80a +1600 <em>(</em><em>simplify</em><em>)</em>

a² +3400 -a² -80a -1600= 0 <em>(</em><em>bring</em><em> </em><em>everything</em><em> </em><em>to</em><em> </em><em>1</em><em> </em><em>side</em><em>)</em>

-80a +1800= 0

80a= 1800 <em>(</em><em>+</em><em>8</em><em>0</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>

a= 1800 ÷80

a= 22.5

Subst. a= 22.5 into (1):

22.5² +900= b²

b²= 506.25 +900

b²= 1406.25

b= √1406.25 <em>(</em><em>square</em><em> </em><em>root</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>

b= 37.5 <em>(</em><em>reject</em><em> </em><em>negative</em><em> </em><em>value</em><em> </em><em>since</em><em> </em><em>b</em><em> </em><em>is</em><em> </em><em>a</em><em> </em><em>length</em><em>)</em>

☆(a +b)²= a² +2ab +b²

3 0
3 years ago
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