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Naily [24]
4 years ago
15

6(a+3) = 18 + 6a

Mathematics
1 answer:
ivanzaharov [21]4 years ago
7 0
6(a+3) = 18 + 6a 6(a+3)=6(3+a)
a+3=3+a
a-a=3-3
0a=0
<span>B. all real numbers</span>



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Bond [772]
Let n = 0, 1, 2, 3, 4, 5, 6, 7.... 
When n = 0 then 0^2 + 0 = 0. n = 1 we have 1^2 + 1 = 2. And when n = 2 we have 2^2 + 2 = 6. When n= 3 we have 3^2 + 3 = 12. When n = 4 we have 4^2 + 4 = 20. When n = 5 we have 5^2 + 5 = 30. When n = 6 = 6^2 + 6 = 42. And finally when n = 7 we have 7^2 + 7 = 56. So at n = 1, 2, ...7, ... Our values are = 2, 6, 12, 20, 30, 42, and 56. It is obvious that n is always an even number. Hence n^2 + n is always an even integer for all positive integers. 
When n = -1 we have (-1)^2 - 1 = 0 when n = -2 we have (-2)^2 -2 = 2. When n = -3 we have (-3)^2 - 3 = 6. When n = -4 we have (-4)^2 - 4 = 16 - 4 =12. When n =-5 we have (-5)^2 -5 = 20. When n = -6 we have (-6)^2 - 6 = 30. When n = (-7)^2 - 7 = 42. Hence n^2 + n is always even for all integers
4 0
3 years ago
A telemarketing company calls telephone numbers chosen at random. It finds that 70% of calls arc not completed (the party does n
saw5 [17]

Answer:

We conclude that the 8 % of calls result in a sale.

We conclude that the 5.3% of sales are made to women.

Step-by-step explanation:

We know  that 70% of calls arc not completed (the party does not answer or refuses to talk), that 20% result in talking to a woman, and that 10% result in talking to a man.  After that point, 30% of the women and 20% of the men actually buy something.

We calculate what percentage of calls result in a sale, and we get:

p=\frac{20}{100}\cdot \frac{30}{100}+\frac{10}{100}\cdot \frac{20}{100}\\\\p=\frac{6}{100}+\frac{2}{100}\\\\p=\frac{8}{100}

We conclude that the 8 % of calls result in a sale.

We know that the ratio of women to men talking on the telephone is 2:1.

We calculate a percent of sales are made to women, and we get:

w=\frac{2}{3}\cdot 8\\\\w=\frac{16}{3}\\\\w=5.3

We conclude that the 5.3% of sales are made to women.

8 0
4 years ago
Doess anyone know help plz
Readme [11.4K]

Answer:

71%

Step-by-step explanation:

The original price is 200. The dress was sold for 142.

Take the price of the dress divide the original price (142/200) then times 100.

6 0
3 years ago
What is 18/48 simplify
Y_Kistochka [10]
Hmm they're both even numbers so maybe we can start by cutting each number in half.
\rm \dfrac{18}{48}=\dfrac{9\cdot2}{24\cdot2}=\dfrac{9}{24}
18 and 48 had 2 as a common factor.
So factoring a 2 out of each number was the same as cutting each number in half. Try to do something similar with the 9 and 24. They each have something in common.
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3 years ago
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