Ask question

Ask question

All categories

Marina CMI [18]

3 years ago

13

Which amount is larger and by how much? A positive number a or the same number a decreased by 50% and then increased by 50% of t

he result? Pls Help!

1 answer:

ankoles [38]3 years ago

4 0

Answer:

Step-by-step explanation:

..

You might be interested in

4^5 5^3 6^2<br> 4^4 5^2 6

Nezavi [6.7K]

4^5 = 1024

5^3 = 125

6^2 = 36

4^4 = 256

5^2 = 25

3 0

2 years ago

On Monday, 218 students went on a trip to the zoo. All 5 buses were filled and 8 students

galina1969 [7]

Answer:

Their were 42 kids on each bus.

Step-by-step explanation:

You have to divide the number of kids(210) by the number of buses.

7 0

3 years ago

Read 2 more answers

A welder drops a piece of red-hot steel on the floor. The initial temperature of the steel is 2,500 degrees Fahrenheit. The ambi

sergey [27]

Answer: After 18.05 minutes, the temperature of steel becomes 100 degrees.

Step-by-step explanation:

Since we have given that

Initial temperature = 2500

At t = 0,

we get that

$f(t)=Ce^{-kt}+80\\\\2500=C+80\\\\2500-80=C\\\\2420=C$

After 2 minutes, the temperature of the steel is 1500 degrees.

so, it becomes,

$1500=2420e^{-2k}+80\\\\1500-80=2420e^{-2k}\\\\\dfrac{1420}{2420}=e^{-2k}\\\\0.587=e^{-2k}\\\\\ln 0.587=-2k\\\\-0.533=-2k\\\\k=\dfrac{0.533}{2}\\\\k=0.266$

So, We need to find the number of minutes when the temperature of steel would be 100 degrees.

So, it becomes,

$100=2420e^{-0.266t}+80\\\\100-80=2420e^{-0.266t}\\\\20=2420e^{-0.266t}\\\\\dfrac{20}{2420}=e^{-0.266t}\\\\\ln \dfrac{20}{2420}=-0.266t\\\\-4.8=-0.266t\\\\t=\dfrac{4.8}{0.266}\\\\t=18.05$

Hence, after 18.05 minutes, the temperature of steel becomes 100 degrees.

7 0

3 years ago

The value 3pie/16 is a solution for the equation 2cos^2(4x)-1=0 true or false

SSSSS [86.1K]

The answer is true i had the same question

3 0

2 years ago

Guided Practice

levacccp [35]

I’m pretty sure the answer is A

7 0

3 years ago

Read 2 more answers