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olganol [36]
3 years ago
11

What's (9+9i)(-1-5i) using foil method

Mathematics
1 answer:
hammer [34]3 years ago
5 0

Answer:

36-54i

Step-by-step explanation:

(9+9i)(-1-5i)

v

-9-9×5i-9i-9i×5i

v

-9-45i-9i-45i^2

v

-9-45i-9i-45×(-1)

v

(-9)-45i-9i+(45)

v

36(-45i)(-9i)

v

36-54i

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Please help <br> thanksss
expeople1 [14]

Answer: y = -\frac{2}{3} x - 6

Step-by-step explanation:

The line crosses the y intercept at y = -6

The slope of the graph looks negative, as it extends from the top left quadrant to the bottom right quadrant.

A key trick is to use rise/run to figure out the slope:

Between each dot on the line, it rises 2 and runs -3 (negative because the direction is left).

So your equation would be: y = -\frac{2}{3} x - 6

7 0
4 years ago
Olivia needs $36 to buy a coat. She has saved $8 and plans to work as a babysitter to earn $7 per hour. Which inequality shows t
Sati [7]
█ Solution <span>█

</span><span>✦ Since Olivia has already saved 8 dollars, the inequality would be addition.
</span><span>✦ The only two choices for that would be choice #1 or #2
</span>✦ Since she's earning 7 dollars per hour, the answer would be the first choice.
✦ 8 + 7n ≥ 36, so n ≥ 4

Answer: Choice 1 

<span>Hope that helps! ★ <span>If you have further questions about this question or need more help, feel free to comment below or leave me a PM. -UnicornFudge aka Nadia </span></span>
4 0
4 years ago
Read 2 more answers
Help please I'm struggling on this problem<br>27,811 ÷ 10(6)? ​
Mnenie [13.5K]

Answer:

45/811

Step-by-step explanation

7 0
3 years ago
13 (3) = ???<br><br> Please help ant get the answer for nothing...
Lunna [17]

Answer:

39

Step-by-step explanation:

13 x 3?

8 0
3 years ago
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Two numbers x and y, have a sum of 23 and a difference of 7. x is greater than y.
Finger [1]

Answer:

X+Y =23

X-Y =7

Is this the answer you were looking for??

5 0
3 years ago
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