Question

hello! I need some major help! Please help!

Answer 1

Nadia took two practice exams to prepare for her college entrance exam. On the first practice exam, she scored 1100. After studying, her score increased by 25%. What was her score on the second practice exam?

1125
(not this one) 1350
1375
1467

Answer 2

first you have to find the marks by which her score increased. it increased by 25%. can you tell from that, how many marks did her score increase?

Answer 3

oh, hah, i just got the answer.... realized i did some math wrong!

Answer 4

Danika has saved enough money to pay cash for a used car. She wants to buy a car that costs 5500 before taxes. If she will be charged 6% sales tax, what is the total amount she will pay for the car?

Answer 5

It's the same concept as the question you did before, you simply add 6% of 5500 to 5500 like this : total = 5500 + 0.06*5500

Answer 6

does the * mean multiply? @math&ing001

Answer 7

Yes @RebeleCo518

Answer 8

so you get 5830 ?

Answer 9

Yep !

Answer 10

thanks so much @math&ing001

Answer 11

can you help with more?

Answer 12

Welcome !

Answer 13

Of course !

Answer 14

Lydia received a parking ticket because she parked 10 feet from a fire hydrant. She had estimated her distance from the fire hydrant as being the minimum allowable distance, which is 15 feet. What was her percent error?

Answer 15

Her error was 5 feet. 5 feet from 15 feet is 33.33%.

Answer 16

that was the answer i had.... it was wrong :(

Answer 17

Did you try leaving it as a fraction 1/3 ?

Answer 18

the options are 15%, 33%, 50% and 67%.... so no

Answer 19

@math&ing001 ??

Answer 20

Well it's 33%. Isn't it obvious :D

Answer 21

haha! but seriously.... i don't get it....

Answer 22

well lets try a different one then....

Answer 23

What is the surface area of the composite figure?


252 mm2
• 264 mm2
 300 mm2
324 mm2
 
Points earned on this question: 0

Answer 24

Which of the following could be solved using the percent equation:
 14..4=p%•18?

•  Victor's breakfast cereal has 14.4 mg of Iron. What percentage of the Recommended Daily Allowance (RDA) of Iron is in his cereal if the RDA is 18 mg per day?
•  Victor's breakfast cereal has 18 mg of Iron. What percentage of the Recommended Daily Allowance (RDA) of Iron is in his cereal if the RDA is 14.4 mg per day?
•  Victor's breakfast cereal has 18 mg of Iron, which is 14% of the Recommended Daily Allowance (RDA) of Iron. What is the RDA of Iron?


i already took out the wrong one

Answer 25

Victor calculates the percentage interest rate he needs to make 20$ in simple annual interest over 2 months on a deposit of 1000$. Where did he go wrong?

I= prt
20 = 1000•r•2
R= 0.01
R=1%

 He applied the principal and interest to the wrong variables.
 He should have divided 2 by 12 to get the value for t.
 He misrepresented the earned interest with the final balance.
•  He should have multiplied r by 100 to get the interest rate as a percentage.
Points earned on this question: 0

Answer 26

Which set of data shows 40% as the experimental probability of a particular traffic light being green on your way to school in the morning?
 
• 10 of 25 selections at random from a card deck being a black card, with black representing a green light
•  2 tails in 20 coin flips, with tails representing a green light
•  (wrong)2 odd-numbers in 8 rolls of a standard die, with odd numbers representing a green light
•  spinning 20 vowels out of 40 spins of a spinner with 6 equally divided sections labeled with 3 vowels and 3 consonants

Answer 27

if i can get CORRECT answers to all of these questions by friday morning, i will find a way to give medals to all!