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yarga [219]
3 years ago
5

I really need help , can someone please help me?!

Mathematics
2 answers:
kobusy [5.1K]3 years ago
4 0

Answer:

1

Step-by-step explanation:


padilas [110]3 years ago
3 0
C because the points make a trapizoid that has two congruent sides
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1+cos2A /1-cos2A=cotA.cotA​
Allisa [31]

Answer:

See Explanation

Step-by-step explanation:

formulae \: to \: be \: used :  \\  \cos 2 \theta = 2 { \cos}^{2}  \theta - 1 \\ and \\ \cos 2 \theta = 1 - 2 { \cos}^{2}  \theta  \\  \\ now \: let \: us \: prove \: the \: given \: trigonometrical \:  \\ identity. \\  \\  \frac{1 +  \cos2A}{1  -   \cos2A}  = \cot \: A. \cot \: A \\ LHS =  \frac{1 +  \cos2A}{1  -   \cos2A}  \\  \\  =  \frac{1 +2 { \cos}^{2}   A- 1 }{1 - (1  - 2 { \sin}^{2}   A)}  \\  \\ =  \frac{1 +2 { \cos}^{2}   A- 1 }{1 - 1   + 2 { \sin}^{2}   A}  \\  \\ =  \frac{2 { \cos}^{2}   A }{2 { \sin}^{2}   A}  \\  \\ =  \frac{{ \cos}^{2}   A }{ { \sin}^{2}   A}  \\  \\  =  { \cot}^{2} A \\  \\  =  { \cot} A .{ \cot} A \\  \\  = RHS \\  \\ hence \: proved.

6 0
3 years ago
Solve the Equation p+5/8=15/16?
Sphinxa [80]
So the first thing you want to do when faced with two fractions with different denominators (when subtracting or adding) is to make the denominators the same. So for this equation they would turn out to be p+10/16=15/16 (because 16 is the lowest common denominator, 8 times two) so then you want to subtract 10/16 from 15/16 to isolate the variable (p) which would get: 
p=5/16
This is the final answer because it cannot be simplified.
Hope this helps!
6 0
4 years ago
Find b and then solve the equation:(b−5)x2−(b−2)x+b=0, if one of its roots is0.5
grigory [225]

Answer:

b = ⅓

x = ½, -1/7

Step-by-step explanation:

(b−5)x² − (b−2)x + b = 0

(b - 5)(0.5)² - (b - 2)(0.5) + b = 0

0.25b - 1.25 - 0.5b + 1 + b = 0

0.75b = 0.25

b = ⅓

(⅓−5)x² − (⅓−2)x + ⅓ = 0

(-14/3)x² + (5/3)x + 1/3 = 0

14x² - 5x - 1 = 0

14x² - 7x + 2x - 1 = 0

7x(2x - 1) + (2x - 1) = 0

(7x + 1)(2x - 1) = 0

x = 0.5, -1/7

4 0
4 years ago
Read 2 more answers
Simplify as far as possible.<br> 2<br> √<br> 75<br> +<br> 3<br> √<br> 12
Hunter-Best [27]
16√3 or ≈27.71…
Hope it helps!
3 0
3 years ago
Read 2 more answers
4 6 6<br> x 2 7 <br> _____<br> 12865
spin [16.1K]

Answer:

I believe it is 3262

Step-by-step explanation:

7 0
3 years ago
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