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lapo4ka [179]
4 years ago
12

A geologist is keeping track of the erosion of an island. The land of the island is changing at a rate of -14 inches per year. H

ow long will it take for the change in length of the island to be -168 inches?
Mathematics
1 answer:
Andrej [43]4 years ago
8 0

Answer:

It will take 12 years to reach from -14 to -168.

Step-by-step explanation:

Just multiply 14 time 12 and that's how to get the answer. Make sure to change it as negative, of course.

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Juan joins a movie club. He pays $10 to join and each movie cost $5. Which equation represents the relationship between the y ,
TiliK225 [7]
Y = 5x + 10. X represents the number of movies, and Y is the cost per month.
6 0
3 years ago
A quantity with an initial value of 4000 grows exponentially at a rate of 0.05% every 5 decades. What is the value of the quanti
icang [17]

The value of the quantity after 1 year, to the nearest hundredth is 4000.00

<h3>The exponential form of an equation</h3>

The standard exponential equation is eexpressed as:

P(t)=P_0e^{kt}

Given the following parameters

P_0=4000\\r =0.0005\\t = \frac{1}{50} =0.02 (yearly)

Substitute into the formula to have:

P(t)=4000e^{0.0005(0.02)}\\P(1)=4000e^{0.00001}\\P(1)=4000

Hence the value of the quantity after 1 year, to the nearest hundredth is 4000.00

Learn more on exponential equations here: brainly.com/question/12940982

6 0
3 years ago
2/5- -3/4 what would be the answer?
Ipatiy [6.2K]

For this case we must simplify the following expression:

\frac {2} {5} - (- \frac {3} {4})

By definition of the law of multiplication signs we have to:

- * - = +

So, rewriting the expression we have:

\frac {2} {5} + \frac {3} {4} =\\\frac {4 * 2 + 5 * 3} {5 * 4} =\\\frac {8 + 15} {20} =\\\frac {23} {20} = 1.15

Thus, the answer in decimal form is 1.15.

Answer:

\frac {23} {20} = 1.15

5 0
3 years ago
The measure of one angle in a parallelogram is 10 degrees less than 2.5 times the measure of the other angle. What is the measur
Lady bird [3.3K]

Answer:

Sum of the angles = 360 degrees.

-----

Let the two larger angles have measure "x":

-----

Then the two smaller angles have measure "0.25x":

Step-by-step explanation:

8 0
3 years ago
Drew has 50 red,green,and blue marbles. he has six more red marbles than blue marbles and four fewer green marbles than blue mar
astraxan [27]

Red = r

Blue = b

Green = g


Step 1: Write as algebraic equations.

r = b + 6

g = b - 4


Step 2: Merge the two equations together to form one, by adding them together.

r + g = b + b + 6 - 4


Step 3: Simplify.

r + g = 2b + 2


Step 4: Make b the subject.

2b + 2 = r + g

2b = r + g - 2

b = 0.5(r + g - 2)


ANSWER

b = 0.5(r + g - 2)

3 0
3 years ago
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