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Sloan [31]
3 years ago
6

I need the answers for 5 and 6 please and make sure they are accurate , thank you :)

Mathematics
1 answer:
velikii [3]3 years ago
7 0

Answer:

5. 6+6i

6. -2+(6\sqrt{3})i

Step-by-step explanation:

well, u just need to calculate

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Can anyone please help me with this? i need a step by step explanation please! very appreciated:)
EastWind [94]

Answer:

Step-by-step explanation:

x and y are variables. That means they represent numbers that are unknown. When we solve for x or y, we are trying to find what number the variable represents.

Y is a number that equals both 5x-9 and 3x+7. If it is a number, it can only have one value, so we can say that 5x-9 and 3x+7 have the same value.

In other words, 5x-9 = 3x+7.

Another way of thinking about this step is substitution. y=3x+7, so in the equation y=5x-9, we can replace the y with 3x+7. It will give 3x+7 = 5x-9.

In either case, we have this new equation

5x-9 = 3x+7.

From here it's just simple algebra- subtract 3x from each side

2x -9 = 7

and add 9 to each side

2x = 16

and divide each side by 2.

x = 8.

All these steps work because if two things equal each other, when you do the same thing to both of them (such as add 9), the new values will still equal each other.

Now that we know that x = 8, we can take one of the original equations

y=5x-9

and put 8 in for x.

y=5*(8) -9.

If x represents the value 8, we can obviously switch out x for 8.

Now simplify

y=40 -9

y = 31

Now we know that x = 8 and y = 31.

5 0
3 years ago
Read 2 more answers
Find the circumference of the given circle 11 ft
nasty-shy [4]

Answer:

69.12

Step-by-step explanation:

5 0
3 years ago
My homework says rewrite each statement using symbols for example one says
timurjin [86]
Well the question says "rewrite each statement using symbols so I guess it means using symbols...
4 0
3 years ago
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Write a function, f(x), which has a maximum and a y-intercept of −3.
LUCKY_DIMON [66]
Answer: One possible equation could be y = -2x^2 - 3.

The equation that is given would be in the shape of an upside down parabola. It would have a maximum (vertex) at (0, -3). 

The point (0, -3) would also be the y-intercept of the graph.

You could change the -2 to any other negative number and the equation would work in your problem.

3 0
3 years ago
find the sums.does the order of the addends matter in an addition sentence? what property is this. -5+6= 6+(-5)=
azamat

In this question we will be using Commutative Law of Addition which is as follows:

The Law that says you can swap numbers around and still get the same answer when you add.

a+b =b+a

where a and b are addends.

Using this law, we can clearly see that order of addends does not matter at all in addition.

Now adding -5+6, we get 6-5 which is equal to 1

Answer is 1

6 0
3 years ago
Read 2 more answers
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