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jekas [21]
3 years ago
12

Simplify the expression:

Mathematics
1 answer:
olga55 [171]3 years ago
5 0

Answer:

The correct answer is 20x-1

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Fraction math problems, have lots tonight need help for some
Vanyuwa [196]

Answer:

5

Step-by-step explanation:

7 0
3 years ago
Kelly subtracted 2.3 from 20 and got 17.7. explain why this answer is reasonable
Serga [27]
20-2.3=17.7 what don't you understand? 

<span>20-2= 18 </span>

<span>18-.3=17.7
</span><span>its reasonable because if you do the calculation, 17.7 is the answer
</span>HOPE HELPED:D
this is 5th grade,lol

3 0
3 years ago
1)cot a/2 -tan a/2 = 2 cot a<br>2) cot b/2 + tan b/2= 2 cosec b<br> prove​
VladimirAG [237]
1)

LHS = cot(a/2) - tan(a/2)

= (1 - tan^2(a/2))/tan(a/2)

= (2-sec^2(a/2))/tan(a/2)

= 2cot(a/2) - cosec(a/2)sec(a/2)

= 2(1+cos(a))/sin(a) - 1/(cos(a/2)sin(a/2))

= 2 (1+cos(a))/sin(a) - 2/sin(a)) (product to sums)

= 2[(1+cos(a) -1)/sin(a)]

=2cot a

= RHS

2.

LHS = cot(b/2) + tan(b/2)

= [1 + tan^2(b/2)]/tan(b/2)

= sec^2(b/2)/tan(b/2)

= 1/sin(b/2)cos(b/2)

using product to sums

= 2/sin(b)

= 2cosec(b)

= RHS
8 0
3 years ago
I need helpppppppppppp please
Gnom [1K]

Answer:


Step-by-step explanation:

The answer is 7,000,000

4 0
3 years ago
Read 2 more answers
Pls show work, need help!
Katyanochek1 [597]
A number has exactly eight factors. Two of the factors are 10and14. What is the number , and what are all the factors
3 0
3 years ago
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