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Brrunno [24]
3 years ago
12

Which addition expression has the sum 8 – 3i ? (9 + 2i) + (1 – i) (9 + 4i) + (–1 – 7i) (7 + 2i) + (1 – i) (7 + 4i) + (–1 – 7i)

Mathematics
2 answers:
Ber [7]3 years ago
7 0

Answer:(9+4i) + (-1-7i), or B on edgunity

Step-by-step explanation:

Firlakuza [10]3 years ago
4 0

Answer:

B

Step-by-step explanation:

Just took it. Edg 2020. Hope this helps :)

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Please help! I will mark brainliest.
jek_recluse [69]

Answer:

the correct answer is D 175

7 0
3 years ago
Since an instant replay system for tennis was introduced at a major​ tournament, men challenged 1436 referee​ calls, with the re
Artemon [7]

There is no sufficient evidence to suggest that men and women have equal success in challenging calls. This was illustrated in the hypothesis.

<h3>How to compute the value?</h3>

It should be noted that based on the information given, P1 will be:

= 424/1436

= 0.295

P2 will be:

= 222/754

= 0.294

The value of the test statistic will be:

= (424 + 222)/(1436 + 754)

= 646/2190

= 0.2949

In this case, the value of the test statistic falls on the rejection region, therefore, there is no sufficient evidence to suggest that men and women have equal success in challenging calls.

Learn more about hypothesis on:

brainly.com/question/11555274

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4 0
2 years ago
Jason paints 1/4 of the area of his living room walls, w, on Monday. On Tuesday, he paints twice as much as he painted on Monday
AlekseyPX

Answer:

Step-by-step explanation:

Let us assume that the total area of the wall to be painted is w.

Then Jason painted an area of  (1/4)w on Monday

And he painted (2)(1/4)w on Tuesday

So to find the unpainted area, we just take the whole wall area to be painted (which is w) and subtract out the amounts painted on Monday and Tuesday, which are shown above.

So the unpainted area (U) would be shown by the following expression:

U = w - (1/4)w - (2)(1/4)w

We can simplify this expression by factoring out w

U = w(1 - 1/4 - 1/2)

U = w (1/4) or w/4

So all Jason needs to do is paint as much of the wall as he did on Monday, and he will be done!

8 0
3 years ago
Read 2 more answers
The formula f(x + 1) = Two-thirds(f(x)) defines a geometric sequence where f(1) = 18. Which explicit formula can be used to mode
astraxan [27]

Answer:

The explicit formula is Tn = 18[(2/3)^(n-1)]

Where n is the term we are looking for

Step-by-step explanation:

Here, we want to get an explicit formula to model the equation

Now, F(2) = 2/3 * f1 = 2/3 * 18 = 12

F(3) = 2/3 * f(2) = 2/3 * 12 = 8

F(4) = 2/3 * F(3) = 2/3 * 8 = 16/3

F(5) = 2/3 * 16/3 = 32/9

Thus, seeing how the equations are progressing, we can definitely see a pattern.

That is Tn = (2/3)^(n-1)(18)

7 0
4 years ago
Write an equation that represents the line use exact numbers
RSB [31]

Answer:

y = (-6/7)x - 1

Step-by-step explanation:

There's a dot where this line crosses the y-axis; it's represented by the point (0, -1).  Consequently, the y-intercept, b, of this line is -1.

As x increases from -6 to 0, y decreases from 7 to -1.  The change in x is 7 units and the change in y is -6 units.  Thus, the slope of this line is

m = rise / run = -6 / 7.

Again, the y-intercept is b = -1.

Thus, inserting the knowns into the slope-intercept form of the equation of a straight line results in:

y = (-6/7)x - 1

3 0
3 years ago
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