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chubhunter [2.5K]
3 years ago
7

The arnold family arrived at the beach at 10:30 a.m. The spent 3 3/4 hours there. what time did they leave the beach?

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
4 0
2:15 was the time they left the beach
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La
Marysya12 [62]

Answer:

Step-by-step explanation:

The formula you need for this is

A(t)=P(1+\frac{r}{n})^{nt where

A(t) is the amount after a certain number of years has gone by,

P is the initial deposit,

r is the interest rate in decimal form,

n is the number of compoundings done per year, and

t is the amount of time in years.

For us,

A(t) = 11900

P is 250

r is .048

n is 12 (there are 12 months in a year)

t is our unknown. Filling in:

11900=250(1+\frac{.048}{12})^{(12)(t) which simplifies a bit to

11900=250(1_.004)^{(12t) . Now we'll divide both sides by 250:

47.6=(1.004)^{12t and then take the natural log of both sides to bring that t down out front:

ln(47.6)=ln(1.004)^{12t and then

ln(47.6) = 12t ln(1.004). Now divide both sides by ln(1.004) to isolate the 12t:

967.6383216 = 12t and divide both sides by `12 to get

t = 80.6 months which is 6.7 years

5 0
3 years ago
An someone hlpe me with my problme​
ahrayia [7]

Answer:

2*4ⁿ

Step-by-step explanation:

4^{n-1}=4^n*4^{-1}\\4^{-1}= \frac{1}{4}\\8*\frac{1}{4}*4^n\\2*4^n

4 0
3 years ago
Find the greatest common factor of the following monomials 34n^5 32n4
Andrew [12]

Answer:

by u meant 32n^4, then the answer is 2n^4

Step-by-step explanation:

first find the gcf of the coefficient

32 and 34

their gcf is 2, because they're both even but have no other common factor, so it is 2

then for the variables

n^4 and n^5

their gcf is n^4. you can tell by dividing each term by n^4

n^4 / n^ 4 = 1

n^5 / n^4 = n

so then 2 * n^4 is 2n^4

7 0
3 years ago
Read 2 more answers
A rectangular rug has a perimeter of 220 feet. The width of the rug is two feet less than the length. Find the length and the wi
Gekata [30.6K]

Answer:

The length is 56 and the width is 54.

Step-by-step explanation:

The perimeter of a rectangle is 2x+2y (width and length on both sides). so 2x+2y=220. Also x=y-2, because the width is 2 feet less than the length. Fill x=y-2 in 2x+2y=220 and we get 2(y-2)+2y=220. 2y-4+2y=220. 4y=216. y=54. Fill in y=54 in 2x+2y=220 and we get 2x+2(54)=220. 2x=220-2(54)=112. x=56.

7 0
3 years ago
What is the sum of the zeros of the equation (m-4) (3m-2)=0 ? Enter your answer as a fraction.
Katen [24]

Answer:

4 2/3

Step-by-step explanation:

(m-4) (3m-2)=0

Use the zero product property to find the zeros

m-4 = 0             3m-2 =0

m =4                    3m =2

                              m = 2/3

We want the sum of the zero's

4+ 2/3

4 2/3

6 0
3 years ago
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