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ipn [44]
4 years ago
5

Which expression is equal to –2i(4– i)?

Mathematics
2 answers:
Agata [3.3K]4 years ago
6 0
Hope it will help you....

Mnenie [13.5K]4 years ago
3 0
-8i + 2i^2
-8i - 2  OR -2 - 8i

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Does anybody know the answer's to, 2,3, and 4?
Jobisdone [24]
2, No solution
3, Infinite many solutions
4, (0,-3)
i hope i was able to help!! so sorry if i made a mistake
7 0
3 years ago
What is the slope of the line represented by the equation – 5x + 2y = 10 ?
77julia77 [94]
the answer is A. -5/2

Hope this helpedb
4 0
3 years ago
Read 2 more answers
????????????????????????????????????????????????????????????
Nuetrik [128]

Answer:

r=20

Step-by-step explanation:

to get rid of the division part, you multiply 6 each side. now you have r+10=30. to solve, now you subtract 10 from both sides. this gives you r=20 :)

8 0
3 years ago
Decreasing 3/4 times a number by 18 is equal to<br> increasing 1/5 times the number by 5.
Naya [18.7K]

Answer:

460/11, rounded to 41.8

Step-by-step explanation:

Let's say that our number is x. The first part states that we decrease 3/4 of a number by 18. Therefore, we find (3/4) of x and subtract that by 18, or (3/4)x-18. That is then equal to increasing (1/5) of x by 5, or (1/5)x+5. Our equation is then (3/4)x-18=(1/5)x + 5.

Adding 18 to both sides, we get (3/4)x = (1/5)x + 23.

Multiplying both sides by 5 and 4 (or 20 as a whole) to remove the denominators, we get that 15x=4x + 460. Subtracting both sides by 4x, we get that 11x=460, and dividing both sides by 11, our answer is rounded to 41.8 (or just 460/11)

Feel free to ask further questions

6 0
3 years ago
Over the weekend, trigg and Craig drove to lake of the pines to go fishing. Now they're preparing to go home. Trigg needs gas fo
larisa86 [58]
Added gallons:  23.50÷1.25=18.8
All of the gases: 5+18.8=23.8
now the total distance: 23.8*27=642.6≈643 miles.

I hope this helps!
7 0
3 years ago
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