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Vlada [557]
3 years ago
14

Solve (answer please) n-8+n=1-4n

Mathematics
2 answers:
Andrej [43]3 years ago
7 0
N-8+n=1-4n
2n-8=1-4n
2n+4n=1+8
6n=9
n=9/6
n=3/2
STALIN [3.7K]3 years ago
6 0
n-8+n=1-4n\\\\2n-8=1-4n\ \ \ \ \ |add\ 8\ to\ both\ sides\\\\2n=9-4n\ \ \ \ \ |add\ 4n\ to\ both\ sides\\\\6n=9\ \ \ \ \ \ |divide\ both\ sides\ by\ 6\\\\n=\frac{9}{6}\ \ \ \ \ |divide\ a\ numerator\ and\ a\ denominator\ by\ 3\\\\n=\frac{3}{2}\\\\\boxed{n=1\frac{1}{2}}
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If you deposit money today in an account that pays 5.5% annual interest, how long will it take to double your money? Round your
Rashid [163]

Answer: it take 13.09 years to double your money.

Step-by-step explanation:

Assuming the interest was compounded annually, we would apply the formula for determining compound interest which is expressed as

A = P(1+r/n)^nt

Where

A = total amount in the account at the end of t years

r represents the interest rate.

n represents the periodic interval at which it was compounded.

P represents the principal or initial amount deposited

From the information given,

P = P

A = 2P

r = 5.5% = 5.5/100 = 0.055

n = 1 because it was compounded once in a year.

Therefore,.

2P = P(1 + 0.055/1)^1 × t

2P = P(1.055)^t

2P/P = 1.055^t

2 = 1.055^t

Taking log of both side, it becomes

Log2 = tlog1.055.

0.301 = 0.023t

t = 0.301/0.023

t = 13.09 years

6 0
4 years ago
5. Let A = (x, y), B = {1,2). Find the Cartesian products of A and B: A x B? (Hint: the result will be a set of pairs (a, b) whe
hichkok12 [17]

Answer: A x B = {(x,1), (x,2), (y,1), (y,2)}

Step-by-step explanation:

The Cartesian product of any two sets M and N is the set of all possible ordered pairs such that the elements of M are first values and the elements of N are the second values.

The Cartesian product of sets M and N is denoted by M × N.

For Example : M = {x,y} and N={a,b}

Then , M × N ={(x,a), (x,b), (y,a), (y,b)}

Given : Let A = {x, y}, B = {1,2}

Then , the Cartesian products of A and B will be :

A x B = {(x,1), (x,2), (y,1), (y,2)}

Hence, the Cartesian products of A and B = A x B = {(x,1), (x,2), (y,1), (y,2)}

8 0
3 years ago
A charity organization is collecting change to raise money. They have collected three times as many dimes as quarters, 11 more n
Scrat [10]

Answer:they collected 1020 dimes, 340 quarters, 1031 nickels and 2062 pennies.

Step-by-step explanation:

Let d represent the number of dimes that they collected.

Let q represent the number of quarters that they collected.

Let n represent the number of nickels that they collected.

Let p represent the number of pennies that they collected.

They have collected three times as many dimes as quarters. It means that

d = 3q

q = d/3

The collected 11 more nickels than dimes. It means that

n = 11 + d

They collected 2 times as many pennies as nickels. It means that

p = 2n

p = 2(11 + d)

p = 22 + 2d

If they have collected a total of 4453 coins, it means that

p + q + d + n = 4453 - - - - - - - - - -1

Substituting q = d/3, n = 11 + d and

p = 22 + d into equation 1, it becomes

22+ 2d + d/3 + d + 11 + d = 4453

66 + 6d + 6d + d + 33 = 13359

13d = 13359- 99

13d = 13260

d = 13260/13

d = 1020

q = d/3 = 1020/3

q = 340

n = 11 + d = 11 + 1020

n = 1031

p = 22 + 2d = 22 + 2 × 1020

p = 2062

8 0
3 years ago
1+1 pls omg its impossible
artcher [175]

Answer:

it equals 11 haha !

Step-by-step explanation:

have a great day/night :)

8 0
2 years ago
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