Please help..

Mathematics

2 answers:

trasher [3.6K]3 years ago

8 0

They are all on a graph. They all have an x and y in the calculations. The graph has an x and y axes

podryga [215]3 years ago

3 0

Answer:

Answer is in step-by-step.

Step-by-step explanation:

What do you noticed about each solution:

Straight lines? I honestly don't know.

What do you notice about the graphs for each set of equations:

They all intersect.

What do you notice about each set of equations:

They each have a negative and positive equation.

What generalization can you make:

If two equations are given, and the slope of one is positive while the other is negative, the lines will intersect.

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What number two numbers when multiplied equal 24 but when added equal -4

madam [21]

Since it says when Added they are a negative and when multiplied they are positive, we know our two numbers are negative.
think of all multiples of 24
6 and 4
8 and 3
12 and 2
24 and 1
however, none of our choices here would be correct.

5 0

3 years ago

Sin5A/SinA-cos5A/cosA=4cos2A

irina1246 [14]

Answer:

See Explanation

Step-by-step explanation:

$\frac{ \sin5A}{\sin A} - \frac{ \cos5A}{\cos A} = 4\cos2A \\ \\ LHS = \frac{ \sin5A}{\sin A} - \frac{ \cos5A}{\cos A} \\ \\ = \frac{ \sin5A \:\cos A - \cos5A \: \sin A}{\sin A \:\cos A } \\ \\ = \frac{ \sin(5A -A )}{\sin A \:\cos A} \\ \\ = \frac{ \sin 4A}{\sin A \:\cos A} \\ \\ = \frac{ 2\sin 2A \: \cos 2A}{\sin A \:\cos A} \\ \\ = \frac{ 2 \times 2\sin A \: \cos A \: \cos 2A}{\sin A \:\cos A} \\ \\ = \frac{ 4\sin A \: \cos A \: \cos 2A}{\sin A \:\cos A} \\ \\ =4\cos 2A \\ \\ = RHS \\ \\ thus \\ \\ \frac{ \sin5A}{\sin A} - \frac{ \cos5A}{\cos A} = 4\cos2A \\ \\ hence \: proved$