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3 years ago

7

HEL ASAP PLEASEThe dimensions of a square with side measurements of 4 inches are doubled. What happens to the area of the square

?

2 answers:

lianna [129]3 years ago

7 0

Answer:

64

Step-by-step explanation:

The area is doubled by 4

Llana [10]3 years ago

6 0

Answer:

The area is multiplied by 4

Step-by-step explanation:

4x4=16 (area 1)

4(x2)x4(x2)=64 (area 2 (with the measurements doubled)

64/16=4

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A certain compound has a half-life of four days. Write and use an exponential decay function to find the amount of compound rema

dimaraw [331]

Answer:

1.97 ounces

Step-by-step explanation:

-The exponential decay function is given by the formula:

$P_t=P_oe^{-rt}\\\\$

Given that the half-life is 4 days, we can substitute in the formula to solve the rate of decay for a single half-life:

$P_t=P_oe^{rt}\\\\P_t=0.5P_o\\\\\therefore 0.5=e^{-4r}\\\\-4r=In(0.5)\\\\r=0.17329$

#Since, 1 week has 7 days, 3 weeks is a 21-day period, thus, t=21.

#We substitute and solve for the amount remaining after 21days of decay:

$P_t=P_oe^{-rt}\\\\=75e^{-21\times 0.17329}\\\\=1.97072\\\\\approx1.97 \ oz$

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2 years ago

Which expression is equivalent to 14a + 8?

Georgia [21]

The answer is 2(7a+4) because using distributive property 2 times 7a is 14a and 2 times 4 is 8 so it equals 14a+8

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2 years ago

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Write the equation of the line passing through points (2,-2) and (1,0) in slope intercept form.

katrin2010 [14]

Answer:

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Step-by-step explanation:

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2 years ago

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The moon is approximately 240,000 miles from the earth. What is the distance written in scientific notation?

-BARSIC- [3]

Hello there!

Scientific notation is when the number is between 0 and 10 times 10 to a power.
In this case we'd get 2.4 x $10^{5}$ .

Hope This Helps You!
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