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wolverine [178]
3 years ago
15

The electrical charge on a metal plate is given

Mathematics
1 answer:
Katarina [22]3 years ago
8 0

Answer:

after 10 seconds  the charge  is 1.624

Step-by-step explanation:

I think your question missed key information, allow me to add in and hope it will fit the orginal one.

The electrical charge on a metal plate is given  by the function below, where t is the time in  seconds. What is the charge after 10 seconds?

C (t) = 12e^{\frac{-t}{5} }

My answer:

Given the information:

C (t) = 12e^{\frac{-t}{5} }  

when t =10 we have:

C (10) = 12e^{\frac{-10}{5} }

<=>  C (10) = 12e^{-2}

<=>  C (10) = 12\frac{1}{e^{2} }

<=> C (10) = 12 * 0.1353

<=>  C (10) = 1.624

Hence, after 10 seconds  the charge  is 1.624

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bob wants to lose weight. he currently weighs 220 pounds. on average he is losing 5 pounds per week by eating 1000 calories a da
Ksju [112]

Answer:

Nine weeks

Step-by-step explanation:

So Bob is trying to go from 220 pounds to 175 pounds. That means he is trying to loose 220-175= 45 pounds. He is loosing 5 pounds per a week, so all we need to know is 45/5 which is equal to 9.

7 0
3 years ago
The Math Club is baking pies for a bake sale. The fruit-pie recipe calls for twice as many peaches as nectarines. If it takes a
Natali5045456 [20]

Answer:

56 number of  Nectarines are needed

Step-by-step explanation:

Let  number of Fruit-pie be x and  number of nectarines be y.

Since the fruit pie recipe calls for twice as many peaches as nectarines.

then we have,

x= 2y

It is also given that total of 168 pieces fruit for all pies.

⇒ x+y=168

Substitute x=2y in above equation to solve for y:

 2y+ y =168 or

3y=168

Divide both sides by 3, we get

\frac{3y}{3}= \frac{168}{3}

Simplify:

y = 56

Therefore, 56 nectarines are needed.


7 0
4 years ago
What is the product?
Olenka [21]

The value of the product expression (-2x-9y²)(-4x-3) is 8x² + 6x + 27y² + 36xy²

<h3>How to evaluate the product?</h3>

The expression is given as:

(-2x-9y²)(-4x-3)

Expand the expression

8x² + 6x + 27y² + 36xy²

Hence, the value of the product expression (-2x-9y²)(-4x-3) is 8x² + 6x + 27y² + 36xy²

Read more about products at:

brainly.com/question/10873737

#SPJ1

3 0
2 years ago
You take out a 60-day loan for $5000. At the end of the loan, you owe $73.97 in interest. What is the annual percentage rate? Ro
gulaghasi [49]

The PERCENTAGE ANNUAL RATE is 9.0% to the nearest tenth using the SIMPLE INTEREST FORMULA

The question is related to a SIMPLE INTEREST problem:

Loan period = 60 days

using 365 days a year ;

converting to years , 60 days = (60 / 365) years

interest on loan = 73.97

principal = 5000

Using the formula:

interest = (principal * rate * time)

73.79 = (5000 * rate * (60/365)

Rate = 73.79/(5000 * (60/365)) =8.977%

rate = 9%

Therefore, PERCENTAGE ANNUAL RATE is 9.0%

8 0
3 years ago
Lowest common multiple of 12, 18,56
joja [24]

Answer: The lowest common multiple of 12, 18, and 56 would be 504. Why? Well, see below for an explanation!

Step-by-step explanation: What is the lcm? Well, the lcm of two or more numbers is the lowest possible number that each number has in common as a multiple. Because we are dealing with large numbers, we can tell that the lcm will be a multiple of these numbers times at least 5. I multiplied all the numbers by 10, and it was too large and did not work. However, I backed up and tried 9.

56 x 9 = 504.


Why is this acceptable? Well, this is acceptable because I found that 504 can be divided by 12 and 18 both to get a whole number.

504 divided by 18 equals 28.

504 divided by 12 equals 42.


Using this principle, we will find that 504 is the lowest number that 12, 18, and 56 have in common.

Your final answer: 504 is the lowest common denominator. If you need extra help, let me know and I will gladly assist you.

7 0
2 years ago
Read 2 more answers
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