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Keith_Richards [23]
3 years ago
9

5a - {3b - 5[a - (b + -4a)]}

Mathematics
1 answer:
bulgar [2K]3 years ago
5 0
Interesting problem. When computers first came out (when dinosaurs ruled the planet), we had to deal with problems that were many brackets deep.  So  this has practical applications.

Start at the very right and keep on removing brackets and collecting like terms.

5a - {3b - 5[a - (b - 4a)]} I just changed the sign on the right bracket.
5a - {3b - 5[a - b + 4a]}
5a - {3b - 5[5a - b]} Now deal with []. You are still on the right.
5a - {3b - 25a + 5b}
5a - {8b - 25a} Finally remove {}
5a - 8b + 25a
30a - 8b
If you can solve another like this, you are well on your way to being good in computer science.

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What is the fraction that is less then 5/8
Rashid [163]

Answer:

4/6

Step-by-step explanation:

8 0
2 years ago
at five pm a four foot mailbox casts a shadow six feet long at the same time a tree cast a shadow 36 feet Long bhow tall is the
Andrej [43]

So the 4ft mailbox’s shadow was six feet. That 2ft longer. According to my logic if the tree had a showdown of 36ft we subtract 2ft. The trees actual size is 34ft.

I might be wrong don’t hate me :(

5 0
2 years ago
If EG = 59, and EF = 8x - 14, while FG = 4x + 1
lyudmila [28]

Answer:

x = 6

Step-by-step explanation:

EG = 59

EF = 8x - 14

FG = 4x + 1

to find the value of x

EF + FG = EG (same line)

8x - 14 + 4x + 1 = 59

12x -13 = 59

12x = 59 + 13

12x = 72

x = 72 ÷ 12

x = 6

You can even cross check for correct answer

EF + FG = EG

instead of x place the x's value we got

8x - 14 + 4x + 1 = 59

8 (6) - 14 + 4 (6) + 1 = 59

48 - 14 + 24 + 1 = 59

34 + 25 = 59

59 = 59

CROSS - CHECKED

4 0
2 years ago
In a large school district, for every one male teacher, there are three female teachers. Four teachers are selected at random to
serg [7]

Answer:

It would be a female teacher 3 out of 4 times, and male 1 out of 4. You could make a circle, divide it into quarters, make a spinner and likely get male once of four times.

6 0
2 years ago
F(x)=-x^(2)+6 find(-1)
kap26 [50]

Answer:

Step-by-step explanation:

When,x= -1

Now,

f(-1)=-(-1)^2+6

=1+6

=7

Hope it helped you.

7 0
2 years ago
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