# Math

## Recent Questions

Math.... I need help, 3 questions for homework I j
1.Based on a survey, 3 out of ten students like to play the flute. For a class of 700, how many flutes should the teacher pre-order: A. 70 flutes B. 210 flutes C. 300 flutes D. 490 flutes 2.The probability of getting a winning scratch of ticket is 4 out of 10. If dan buys 25 ...

Math Check! FAST! VERY FAST PLZ!!!!!!!!!!!!!!
A bag contains tiles with the letters A-R-I-T-H-M-E-T-I-C. Amelia chooses a tile without looking and doesn’t replace it. She chooses a second tile without looking. What is the probability that she will choose the letter I both times? •1/25 •1/45*** •2/45 •2/55

Math
In Mike's English class at university there are 178 students, of whom 51 also study history and 44 also study statistics. There are another 85 students who also study history, of whom 25 study statistics also. Another 35 students study only statistics. If 15 students study all...

Math Check! FAST!
A bag contains tiles with the letters A-R-I-T-H-M-E-T-I-C. Amelia chooses a tile without looking and doesn’t replace it. She chooses a second tile without looking. What is the probability that she will choose the letter I both times? •1/25 •1/45*** •2/45 •2/55

math
Luke wants to paint his bedroom blue. He has 8/9 of a gallon of paint. If he has three walls left to paint, how much paint will each wall get? rub.

MATH
1. A yogurt shop offers five different flavors of frozen yogurt and thirteen different toppings. How many choices are possible for a single serving of frozen yogurt with one topping? 70 56 18 65** 2. Prestige Builders has a development of new homes. There are five different ...

math
Which of the following is a certain event? 1) rolling a composite number on a number cube 2)rolling a number greater than 1 on a number cube 3)rolling an odd or even number on a number cube 4)rolling an odd or even number greater than 7 I think # 3 Thanks for your hrlp

Math
Max earned a 85% on his test. If there were 40 questions on the test, how many did he get correct?

Math
Yo must be under 12 years of age to order from the kid's menu at a retraurant a < 12 a < 12 ( theres a underscore at < ) a > 12 a > 12 ( another underscore here )

math
Ann began her homework at 3:55 P.M. She spent 15 minutes on her first assignment, and 40 minutes on her second assignment. At what time was she finished with both assignments?

MATH
If a spinner is spun twice what is the probability that the arrow will stop ona vowel both times? Letters are: T, A, D, U, P,I A. 2/9 B. 1/4 C. 1/3*** D. 11/36

Math
Which pair of ratios does NOT form a proportion? A. 3/5, 24/40 B. 30/10,15/5 C. 9/14, 3/4 D. 7/12, 14/24 Help please!!!!!!!!!!!!!! Dont give me the answer, just tell me how to answer it.

CHECK MATH FAST!!!!!!
You want to draft a four-player tennis team. There are eight players to choose from. How many different teams can you form? (1 point) •70**** •64 •48 •336 Elizabeth has two identical number cubes. Both cubes have faces numbered 1 through 6. If Elizabeth rolls each cube...

Math
A total of 130 children attended a basketball camp. Of these, fewer than 87 were girls. Which inequality can be used to find n, the number of boys that might have attended camp?

math
im using the median to find out the IQR i found that 157.5 is the IQR of the data set below. I keep checking with different calculators but the answers are different 34, 96, 112, 121, 148, 175, 211, 231, 236, 276, 285, 299, 324, 434, 457. May someone confirm my answer

Math Check! #3
You want to draft a four-player tennis team. There are eight players to choose from. How many different teams can you form? (1 point) •70 •64 •48 •336****

Math Check!
Elizabeth has two identical number cubes. Both cubes have faces numbered 1 through 6. If Elizabeth rolls each cube once, what is the probability that the sum of the two numbers on the top faces will be 10? •1/36 •1/12 •1/10 •1/9

Math
If a scale of 2cm represent 3/4km find the length on the scale drawing in 30km

Math Check!
Suppose 10% of the flights arriving at an airport arrive early, 60% arrive on time, and 30% arrive late. Valerie used the random-number table to find the experimental probability that of 5 flights, at least 2 will arrive late. The digit 0 represents flights arriving early. The...

Math
Complete the following task in your discussion group: Create two different situations: one in which you use combinations and one in which you use permutations. Include specific details and an explanation about what makes each situation either a combination or permutation. Can ...

MATH
Calculate the area of the composite figure which is not drawn to scale. 17 cm 10 cm 22 cm 17 cm 19 cm the shape is a rectangle with a right triangle on its side

Math
Does the following infinite geometric series diverge or converge? Explain. 1/7+1/28+1/112+1/448 A) It converges; it has a sum.*** B) It diverges; it does not have a sum. C) It diverges; it has a sum. D) It converges; it does not have a sum. Since (1/7)/(6/7)=1/6 and -1>1/6&...

Math
A rectangular sand box has a length of 5 1/3 feet and a width if 3 3/4 feet. What is its perimeter?

Math
a bag contains 7 green marbles, 9 red marbles, 10 orange marbles, 5 brown marbles, and 10 blue marbles. you choose a marble, replace it, and choose again. what is P(read, then blue)? A. 77/164 B. 19/41 C. 90/1681 D. 45/41••

CHEK MATH PLZ!!!
The sample space for a roll of two number cubes is shown in the table. (1,1)|(1,2)|(1,3)|(1,4)|(1,5),(1,6) (2,1)|(2,2)|(2,3)|(2,4)|(2,5)|(2,6) (3,1)|(3,2)|(3,3)|(3,4)|(3,5)|(3,6) (4,1)|(4,2)|(4,3)|(4,4)|(4,5)|(4,6) (5,1)|(5,2)|(5,3)|(5,4)|(5,5)|(5,6) (6,1)|(6,2)|(6,3)|(6,5)|(6...

Math
A spinner is divided into 10 equal sections numbered from 1 to 10. You spin the spinner once. Find P(not even). A. 1/3 B. 1/2 •• C. 1/5 D. 1/4

Math
a number cube is rolled 150 times. the number 3 comes up 43 times. hat is the experimental probability of rolling a 3? what is the theoretical probability of rolling a 3? A. 43/150 ; 1/6 B. 43/150 ; 1/50 •• C. 1/6 ; 43/150 D. 3/43 ; 1/6

Math
you draw five card from a standard deck of 52 cards p(heart)=4/5. what type of probability is illustrated and why?? 1) Theroretical ; the result is based on then number of possible outcomes 2) Theroretical; the result is found by repeating an experiment 3)Expiremental; the ...

Math
I need help on one of my math questions. 7. A coin is flipped, and a number cube is rolled. What is P(T, then odd)? (1 point) 1/4 1/12 1/6 Help plz.

Math Again helpppp
1. A new movie open the other day. So far 500,000 people have seen. The producers of the movie need to know if the people liked it. A random sample of 8000 people were asked as they were leaving the theater if they like the movie. Of those interviewed 4200 enjoyed the movie. ...

Math Help ASAP!!!
1. a standard number cube is rolled 180 times. Predict how many times a 3 or 5 will be the result. 31 times 60 times*** 57 times 30 times 2. A number cube is rolled 360 times, and the results are recorded as follows: 61 ones, 26 twos, 36 threes, 76 fours, 73 fives, and 88 ...

Math
Am I doing this correctly Use the geometric mean to find the 7th term in a geometric sequence if the 6th term is 75 and the 8th term is 48. A) 60*** B) 66 C) 57 D) 51.5 E) 59 F) 68 r^2 = 48/75 = 16/25 r = 4/5 7th term = 75 * 4/5 = 60

math
Mrs. Blake's bill at a restaurant was \$42.75. She wants to leave the waiter an 18% tip. How much will she pay in all, including the tip?

Math
An oblique triangle is inscribed in a circle. If one side of the triangle having a length of 10 cm and the angle subtended to that side is 20. Determine the area of the circle.

Math
Which type of variation is modeled in the table? x|2 |4 |6| y|24|12|8| a) combined*** B) inverse C) joint D) direct

Math
In the xy-plane, the graph of y=x^2 y=x2and the circle with center (0,2) and radius 2 have how many points of intersection?

math
For exersizes 1-4 describe the population, the sampling plan, and the sample 1. A magazine for teenagers asks its readers to write in imformation about how they solve personal problems

College Math
What is the equation of the line that represents this driver's rate? What is the x axis? What is the y axis? What is the y-intercept? How much is the rate for 5 miles? For 7 miles?

math
You have 4 red marbles,5 green,7 blue. What is the probability of selecting a red marble, replacing it, and selecting a blue.What is the probability of selecting a red marble, notreplacing it, and selecting a blue. I think 1 is 1/16 and two is 4/32

Math
write three measurements using grams and three measurements using milligrams that total 15.4 grams

Math
mr frank has 1.03 kilograms of fertilizer for the plants in his nursery.he wants every plant to get 95 mg of fertilizer 4 times each year.what is the number of plants he could fertilize with that amount? how much fertilizer will he have left over?

Math
garner is helping his mom carry in the groceries. she is carrying a bag that has a mass of 1.33 kilograms.garner is carrying two bags. one has a mass of 580 grams and the other a mass of 790 grams. who is carrying the more and by how much

Math
The question on a multiple choice test each have 4 answer choices. Describe a model that you could use to simulate the outcome of guessing the correct answers to a 50 question test?

math
20. Expense Amount Mortgage (monthly) \$985.64 Cell phone (monthly) \$58.30 Groceries (twice a month) \$154.00 Clothing (monthly with 25% jobrelated) \$180.00 Water & electric (monthly) \$128.40 Weekly dinner & movie \$55.00 Property taxes (6 months) \$684.80 Car insurance (quarterly...

Math
First Bank charges \$4.50 per month for a basic checking account plus \$0.15 for each check written. Citizen's Bank charges a flat fee of \$9. How many checks would you have to write each month in order for the cost to be the same at both banks?

Math
What is the sum of the angles in a triangle?

Math
If you started a bike race at 11:30am and you finishes 2 hours later,what time would it be?

math
Abe creates a scatter plot showing students’ ages on the x-axis and their heights on the y axis. Which type of trend will the scatter plot show?

Math
The material used to make a storage box costs \$1.25 per square foot. The boxes have the same volume. How much does a company save by choosing to make 50 of Box 2 instead of 50 of Box 1?

math
twelve friends share 4 pizzas equally. What fraction of a pizza does each friend get? i really need help thank you if you can answer. i think but im not sure it is 4/12 but im not sure pls hel me

Math Percents
Two quantities P and S are related by P=2.5S Then this says that as P is _______ than S. Use the terms (less or more) and percent.

math
The angles of elevation of the highest point of a building from two points S and T are 60° and 30° respectivelly T is vertically above S and |ST| =10m calculete the height of the bulding above the level of S with solution

math
I'm thinking of a number, multiply it by itself and then add 6 to the result

Math
The more you run the more weight you lose. Is this an inverse or direct relationship?

math

math
length = 12 ft. width = 8 ft. Area = sq ft.

Math
If an inch equals 25 ft. What does 20 equal

Math
Find the 29th term of the following sequence. 21, 15, 9, 3, . . . A) –147 B) –165 C) –153*** D) –159 Evaluate the series 1 + 0.1 + 0.01 + ... A) 1.11*** B) 1.12 C) 0.33 D) 2

Math
Evaluate (8 Sigma n-1)n. Where 8 is on top and n-1 is on the bottom and n is on the right. A) 36 B) 8*** C) 40 D) 24

math
suppose that \$2550 is invested in a saving account with a rate of 8.25%. how much interest will be received in 8 years?

math
Choose the function table that matches the rule. output=input -3

Math
Jen figures she has a 70% chance of passing math and an 80% chance of passing history a) What is the probability that she passes math and history? What assumption did you have to make to answer this question? b) What is the probability that she will pass one but not both? Note...

math
5/6:7/10 what is simplest form of

math
A tradesman allows a discount of 15% for cash payment.how much % above cp must he mark his goods to make a profit? (ans 20%) please help me

math
I really need help. i don't know if this should be posted here or if it's allowed, but oh well.. so just to get straight to point, there's this huge test this month in a few days; i'm not prepared for it AT ALL. it will be 3+ hours but anyway i been cheatin dis whole year, but...

Math
A grandfather is ten times older than his granddaughter.he is also 54 years older than her. Find their present ages.

math
Naomi was at her house.She saw a tree.How tall is it?

Math
a manufacturing process calls for the width of a part to be 10 cm. any part manufactured with an error of greater than 0.13 cm is rejected. parts with what widths are rejected? write and solve an absolute value inequality for this situation

Math
A rectangular swimming pool is 6 meters longer than the width of the pool. A pool deck (sidewalk) that surrounds the pool is 4 meters wide (all the way around the pool). The combined area of the pool deck and pool together (outer rectangle) has an area of 576 square meters ...

Math
A ladder is needed to reach the top of a second floor window, A distance of 20 feet above the (level) ground. According to the directions on the ladder, the distance between the bottom of a leaning ladder and the base of the (vertical) wall it is leaning up against should be ...

Math
The distance, "d", to the horizon (= farthest point on the earth still visible) for an object that is "h" miles above the surface of the earth is given the formula d = the square root of 8000h +h^2. Determine how many miles above the surface of the earth is an orbiting ...

Math
The area of a triangular sail (for a sailboat) is 30 meters squared. If the height of this triangular sail is two less than twice the length of the base, find the dimensions ( height and base ) of the triangular sail.

Math
Suppose S and T are mutually exclusive events. Find P(S or T) if P(S) = 29% and P(T) = 49%. What equation would I use for this question? What if they were not mutually exclusive?

math
For a Saturday matinee, adult tickets cost \$6.50 and kids under 12 pay only \$4.00. If 90 tickets are sold for a total of \$460, how many of the tickets were adult tickets and how many were sold to kids under 12?

correction: Doug spent \$90 over the week end. He spent 1/4 of it on a CD and 1/5 on movie ticket. how much money did he have at the start of the weekend?

math
Doug earned \$40 from weekend job. he spent 1/4 of it on CD and 1/5 on movie ticket. how much money did he have at the start of the weekend?

Math
Peter has 12 baseball cards he traded 1/3 of his cards with his cousin and 1/4 of his cards to tyrell how many cards did he keep

Math
In order to get an A in a class, your test scores must average at least 92%. On the first 6 tests, you have an average of 91%. What score do you need to get on the last test to earn an A?

math
there are 4 red marbles 7 blue and 5 green what is the probability of picking a red replacing it and then getting a blue what is the probability of picking a red this time setting it aside and getting a blue why or why not are the answers the same I have been stuck for a while...

Math
2 cups of sugar is needed for 12 cupcakes. How many cups of sugar for 4 cupcakes? I can figure out how many for 24 cupcakes and 6 cupcakes but not the 4 or 9 cupcakes.

Math
In a town, there are 170 teenagers that have portable media players. This is at least 2/3 of the teenagers in the town. What is the maximum number of teenagers in the town?

math
planning a delivery routes for a postman/milkman

Math
Given that the quadratic equation x^2-2x-m+1=0 has 2 positive real number roots, a and b, determine the range of the values of m.

Math
consider the relationship between the height of a child and time. Time would be considered which of the following A. Function B. Input Function C. Dependent Variable D. Independent Variable

Math
Any invested part of her \$4800 savings at 8% and the remainder at 6%. If the total interest earned on these investments was \$348 how much did she invest at each rate?

Math
Name a pair supplementary angles

Math
consider the relationship between the height of a child and time. Time would be considered which of the following

Math
An office supply company is shipping a case of wooden pencils to a store. There are 64 boxes of pencils in the case. If each box of pencils weighs 2.5 ounces, what is the wieght in pounds of the case of wooden pencils

math
3. This question is for 3 and 4. From a barrel of colored marbles you randomly select 7 blue 5 yellow 8 red 4 green and 6 purples. Find the experimental probability of randomly selecting a marble that is not yellow. 1/30 5/6***** 2/15 1/6 4. Find the experimental probability ...

Math
it would be a very big blessing 4. Find the experimental probability selecting a marble that is either green or purple. 1/10 1/5 1/3 2/15*****

Math
Which tree diagram shows the possible outcomes of choosing either black or gray shorts and a blue, green, white, or red T-shirt

MATH hellllp!!!!!!!
1. You mix the letters: S E M I T R O P I C A and L thoroughly. Without looking you draw one letter. Find the probability that you select a vowel. From a fraction to simplest form. 12/5***** 5/12 1/3 7/12 2. You roll a standard cube once. Fine P(0) 7/6 1 1/2 0***** 3. This ...

math
3. This question is for 3 and 4. From a barrel of colored marbles you randomly select 7 blue 5 yellow 8 red 4 green and 6 purples. Find the experimental probability of randomly selecting a marble that is not yellow. 1/30 5/6 2/15 1/6 4. Find the experimental probability ...

Your gross income is \$4,520.00/month. Your deductions are FICA (7.65%),federal tax withholding (11.75%), and state tax withholding (8.5%). Your fixed expenses are 30% of your realized income. You saved 5 months' worth in an emergency fund, placing 75% in a 60-day CD at a 5.45...

math
The slope of a line that goes through -3 -5 and -3 -6 is what positive negatative*** zero undefined

Solids math
A cube has a column of 125 cubic millimeters. What is the length of each edge of the cube

Math (Integrals) (Using given method)
I would like to solve the ∫sin^2(pix) dx Using the given substitution identity: sin^2(x) = (1/2)(1-cos2x) This is what I did so far: ∫sin^2(pix) let u = pix du = pi dx (1/pi)∫sin^2(u)du Applying the identity is where I'm lost on how to continue further.. (1/pi)∫(1/2)(1...

math
The temperature at 3:30 p.m. was 6F. By 7:00 pm the temperature dropped 13. What was the temperature at 7:00pm

Chemistry
So this is a three part question. I solved the first part correctly but I need help with the second and third. Q: The dissociation equilibrium constants for the protonated form of of alanine (a diprotic amino acid, H2X+)are Ka1 = 4.6 x 10^-3 and Ka2 = 2.0 x 10^-10. Assume that...

math
16x^2 +2 + 2x-15x^2-1+14x