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DedPeter [7]
3 years ago
7

What is the algebraic expression for:

Mathematics
1 answer:
ra1l [238]3 years ago
8 0
I wrote the algebraic expressions in order for you. When I show the up arrow, it represents that the number after the arrow is an exponent. Hopefully this helps. :D

4 • (n^3 - 7)

(5 x n) + 3

(n^2) - 15

3 + (5 x y)
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In May Mr. Lee's earings were 60 percent of the Lee family's total income. In June Mr. Lee earned 20 percent more than in May. I
murzikaleks [220]

Answer: 64.29%

Step-by-step explanation:

Let the total earnings of the Lee family in May be x

Amount earned by Mr Lee in May = 60% of x = 0.6x

Amount earned by other family members in May = x - 0.6x (total earnings - Mr Lee's earnings) = 0.4x

Amount earned by Mr Lee in June = 20% more than what Mr Lee earned in May.

That is, amount earned by Mr Lee in June = 1.2 × 0.6x = 0.72x

Amount earned by other members of the family in June remains unchanged, that is = 0.4x

Total amount earned by the Lee family in June = 0.72x + 0.4x = 1.12x

Percentage of total earnings in June earned by Mr. Lee = (0.72x/1.12x) × 100% = 64.29%.

QED!

6 0
4 years ago
Can you evaluate the expressions for the given value. (show steps if you can)
exis [7]

Answer:

Q1. -45

Q2. -10

Q3. 31?

Step-by-step explanation:

Q1 -- you times -8 and 2 which comes out to -16. Since you have -16 + 1 inside of the parentheses you add 1 to -16 which comes out to -15. Then you take -15 times 3 and it comes out to -45.

Q2 -- the m gets replaced by the 5 so now its -2 times 5. Which comes out to -10. Then you take -10 times 2, which is -20. Now take -20 + 10 which gives us the answer of -10.

Q3 -- I'm not completely sure on this one but I think the equation would transfer to this 2*5 + 5*3 + 2*3. So 2*5 is 10, 5*3 is 15, and 2*3 is 6. Add them all together and you get 31.

I hope this was right and it helps you!

6 0
3 years ago
What is the equation for the line that passes through (3, 2) and has a slope<br> equal to 1/3
lana66690 [7]

Answer:

y=1/3x+1

Step-by-step explanation:

6 0
3 years ago
An amount a divided by 17
Ad libitum [116K]
What’s the question for it?
8 0
3 years ago
What would be the fourth and fifth figures? How many dots will be in the 100th figure?
KengaRu [80]

Answer:

4th=8 dots

5th=10 dots

100th=200 dots

Step-by-step explanation:

Since you’re adding two dots each time, it will always bed double the figure number.

4th=8 dots

5th=10 dots

100th=200 dots

5 0
3 years ago
Read 2 more answers
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