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Elan Coil [88]
2 years ago
15

Just the top one!!! please help and show work please

Mathematics
1 answer:
Harrizon [31]2 years ago
8 0

Answer:

HEY GIRLY

Step-by-step explanation:

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What is the solution of the equation when solved over the complex numbers?
marishachu [46]

Try this option:

x²+27=0;

(x+\sqrt{-27})(x- \sqrt{-27})=0; \ => \ \left[\begin{array}{ccc}x=3 \sqrt{3}i\\x=-3 \sqrt{3}i \end{array}\right

3 0
3 years ago
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Please someone help me. It's about proving related to transformation of trigonometric ratios. Thank you!!​
kvasek [131]

Answer:

see explanation

Step-by-step explanation:

Using sum to product identities

cos x - cos y = - 2sin(\frac{x+y}{2} )sin(\frac{x-y}{2} ) = 2sin(\frac{x+y}{2} )sin(\frac{y-x}{2} )

cos x + cos y = 2cos(\frac{x+y}{2} )cos(\frac{x-y}{2} )

Note that

sin10° = sin(90 - 10)° = cos80°

Thus

\frac{2sin(\frac{10+80}{2})sin(\frac{80-10}{2})  }{2cos(\frac{10+80}{2})cos(\frac{80-10}{2})  } ← cancel 2 from numerator/ denominator

= \frac{sin45}{cos45} × \frac{sin35}{cos35}

= tan45° × tan35° { tan45° = 1 ]

= 1 × tan35°

= tan35° ← as required

5 0
3 years ago
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Use inverse operations to complete the second equation each time
ratelena [41]

Answer:

a) 55-42=13

b) 29-10=19

c) 65÷5=13

d) 72÷8=9

6 0
3 years ago
Write an expression that is equivalent to
finlep [7]

Answer:

15/2r - 40; Distributive Property

Step-by-step explanation:

You can use the Distributive Property to multiply the 5 across the expression in the parentheses.

5(3/2r - 8)

5 × 3/2r = 15/2r

5 × -8 = -40

Combine.

15/2r - 40

Hope this helps!

5 0
3 years ago
Evaluate 22p÷11 for p=3
leva [86]
22x3=66 then plug it into the problem

66÷11=6
so your answer is 6
4 0
3 years ago
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