Dennis wants to buy a card for his wife. Dennis calculates the amount of the card as $ 4.50. The actual price of the card is $4. What is Dennis's % error?

Answers

Answer 1

Answer: Okay, so this equation is a percent error, and how you solve those is doing:

First Subtract Approximate value from Exact value:
4.50 - 4 = 0.5 , so the error is 0.5

Now, show the error as a percent of the exact value ... so divide by the exact value and make it a percentage:

0.5/4 = 0.125 = 12.5%

Therefore the percent error would be: 12.5%

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75% of what number is 42?

Please help thank you!! will give brainlist!

Answers

Answer:

the third one

Step-by-step explanation:

y+8= 4(x-3)

y+8= 4x-12

y= 4x-20

The area of a square patio is 225 square feet. what is the perimeter of the patio

Answers

The answer is 900 because if you add up all the sides of 225 you will get that answer for that

900!! Hope you get it right!!

Hope I helped!! If you get it wrong I am very sorry!!

The time, in seconds, it takes for one complete swing of a pendulum is represented by the equation below, where is the length of the pendulum in meters, and is the acceleration due to gravity (9.81 m/s2).What is the approximate length of the pendulum if it takes the pendulum 2.9 seconds to complete one full swing? (Use = 3.14)

Answers

Answer:

82.28 in

Step-by-step explanation:

The movie started at 11:45 and ended at 1:20 how long was the movie

Answers

11:45 ---> 01:20

11:45 + (00:15 + 01:00 + 00:20)

= 01:20

So your answer is:

01:35 which is 1 hr, 35 mins.

The price of a new version of a computer game is 120% of the price of the original version. The original version cost $48. What is the cost of the new version?

Answers

It would $72 because you have to subtract the computer game and the original version cost.

120÷100=1.2×48=57.6-48=9$and 6 cents is the correct answer

A three digit number is an even number less than 200 the sum of the three digits in the 3 digit number is nine help me answer me

Answers

Answer: There are many possibilities such as 108,180,162,126 etc.

Step-by-step explanation:

As it is under 200 the hundreds digit should be 1. And as it should be even, the ones digit should be a multiple of 2. Then finally in the tens place, there should be a number, so that when you add the hundreds digit and ones digit with that number, the sum is 9.

Hope this helps!

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