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pantera1 [17]
3 years ago
14

Multiply (2+3i)(4+6i)

Mathematics
2 answers:
DochEvi [55]3 years ago
7 0

Answer:

-10+24i

hope that helps

kompoz [17]3 years ago
6 0

Answer:

-10+24i

Step-by-step explanation:

Attached file

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WHAT IS 41SQUARED PLUS XSQUARED +213?
Bingel [31]

Answer:

1894+x^2

Step-by-step explanation:

1894+x^2

41 squared IS 1,681.

Adding 213 makes it 1894.

And you end up with the expression 1894+x^2

Hope this helps!

4 0
3 years ago
Show that <br>sinx/1+cosx=tanx/2​
hammer [34]

Answer:

See proof below

Step-by-step explanation:

show that

sinx/1+cosx=tanx/2​

From LHS

sinx/1+cosx

According to half angle

sinx = 2sinx/2 cosx/2

cosx = cos²x/2 - sin²x/2

cosx = cos²x/2 - (1- cos²x/2)

cosx = 2cos²x/2 - 1

cos x + 1 = 2cos²x/2

Substitute into the expression;

sinx/1+cosx

= (2sinx/2 cosx/2)/2cos²x/2

= sinx.2/cos x/2

Since tan x = sinx/cosx

Hence sinx/2/cos x/2 = tan x/2 (RHS)

This shows that sinx/1+cosx=tanx/2​

7 0
3 years ago
What is the value of y in the equation 5x + 2y =
a_sh-v [17]

Answer:

Not Enough Details

Step-by-step explanation:

8 0
3 years ago
Which ordered pairs are solutions to the inequality 3x-4y&gt;5
Sloan [31]

Note: you did not provide the answer options, so I am, in general, solving this query to solve your concept, which anyways would clear your concept.

Answer:

Please check the explanation.

Step-by-step explanation:

Given the inequality

3x-4y>5

All we need is to find any random value of 'x' and then solve the inequality.

For example, putting x=3

3\left(3\right)-4y>5

9-4y>5

-4y>-4

\mathrm{Multiply\:both\:sides\:by\:-1\:\left(reverse\:the\:inequality\right)}

\left(-4y\right)\left(-1\right)

4y

\mathrm{Divide\:both\:sides\:by\:}4

\frac{4y}{4}

y

So, at x = 3, the calculation shows that the value of y must be less

than 1 i.e. y<1 in order to be the solution.

Let us take the random y value that is less than 1.

As y=0.9 < 1

so putting y=0.9 in the inequality

3\left(3\right)-4\left(0.9\right)

=9-3.6

=5.4

  • As 5.4 > 5

Means at x=3, and y=0.9, the inequality is satisfied.

Thus, (3, 0.9) is one of the many ordered pairs solutions to the inequality 3x-4y>5.

6 0
3 years ago
A cube has a length, width and height of 6 feet. What is the volume in cubic INCHES?
rodikova [14]

Volume of cube = ( side)^3

Side = 6 feet = 6×12 = 72 inches ( 1ft =12 inch)

Vol. = (72)^3 = 72×72×72= 373248 cubic inches

6 0
3 years ago
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