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LuckyWell [14K]
3 years ago
6

NEED HELP ON 17 AND 18!!!

Mathematics
2 answers:
Paraphin [41]3 years ago
8 0

#17:  C+D=0

This is because -4+4 is 0. And 0 is equal to 0...

Talja [164]3 years ago
5 0
For question 17 it’s the last one
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Thanks again for the answer :)
jek_recluse [69]
X=.5________________
7 0
3 years ago
Find the exact value of tan( cos^-1 ( -5/13))
trasher [3.6K]

Answer:

-¹²/₅  

Step-by-step explanation:

Let cos a = -⁵/₁₃

Then tan a = sin a/cos a

= [√(1 - cos²a)]/cos a

= {√[1 - (-⁵/₁₃)²]}/(-⁵/₁₃)

= -[√(1 - ²⁵/₁₆₉)] × ¹³/₅

= -[(√(¹⁴⁴/₁₆₉ )] × ¹³/₅

= -¹²/₁₃ × ¹³/₅

= -¹²/₅

tan(arccos (-⁵/₁₃)) = -¹²/₅

The diagram shows the 2nd  quadrant of a circle with radius 13, cos a = -⁵/₁₃, and tan a = ¹²/₍₋₅₎ = -¹²/₅.

4 0
3 years ago
Is the set of numbers one 1,5,25 and 125 a geometric sequence
Strike441 [17]
Short answer: Yes.
Each member of the sequence is multiplied by 5 to get to the next member of the sequence.

Find the general equation.
tn = a*5^(n - 1)

Example
t4 = 1*5^(4 - 1)
t4 = 1*5^3
t4 = 125 just as the sequence shows.

t5 = 1^5^4
t5 = 625     Any member of the sequence can be found this way.
6 0
3 years ago
NEED HELP ASAP!!!! Due by 4!!!! The question is the triangle find x
sashaice [31]
It’s 15x plus 1 I believe it is the sender
5 0
3 years ago
What is the volume of a cone with the given dimensions?
yuradex [85]
B. 102.57 cu. cm is the answer Solution: V=πr^2h The diameter is 14. To find the radius you divide the radius by 2 which is equal to 7. [Radius is 2 times diameter] V= 3.14×7×7×2 V= 102.57
8 0
3 years ago
Read 2 more answers
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