# Math

## Recent Questions

MATH
How do we find what "a" is equal to? I am not sure if we are supposed to put it back to tangent and then find the common denominator? Please help!?!? a cot 16 - a cot 57 = 9.167

Math
Dawn is 15 years old today. This is 5 times as old as her sister Eve was when Dawn was the age that Eve is today. How old is Eve today? Please help

Sat math
if y=m^4=n^3 and y is greater than 1 than mn=? a) y^1/12 b) y^1/7 c) y^7/12 d) y^7

Math

Math
Mr. Ahn buys buys relishes for lunch party. He buys 7/8 pound of pickles and 9/10 pound of olives. How much altogether do these weigh?

Math

Math
Suppose that each number in a data set is decreased by 5. How is the median affected? 1. It is unchanged. 2. It is decreased by 5. 3. You can't tell because it depends on the values in the original data.

Math
Elizabeth has 256 guests coming to her class reunion. The basic meal for one meat and one side is \$9.25 per person. I am still confused what to do please help!

Math
Only seventh grade and eighth grade girls can play on the Milton Bradley Middle School volleyball team. The ratio of seventh grade girls to eighth grade girls on the team is ¾. There are 6 seventh grader girls on the team. What is the total number of girls on the team?

Math
This is a two part question, make sure you answer both parts: 11, 14, 16 and 19 Find the mean. Find the median

Math
60 is 15% of what number

math
three sisters shared some mangos in the ratio 5 : 3 : 2. if the one with smallest ratio received 25 mangos , find the number of mangos shared

Math
A sales representative for Data Electronics earns a salary of 1314 dollars per month plus a commission based on the total value of her sales. If she earned 1484.40 dollars for the month and her sales totaled 5680 dollars, what is her rate of commission?

Math
The new container of Mootastic ice cream was reduced by 8% so that the new calories count is 410. How many calories were in the old container?

Math (probability)
Could someone please correct my work. A fishing magazine collected data and printed the following results: If there is rain then the probability of catching a fish at Lake Blue is 80%, but if it doesn't rain then the probability of catching a fish at Lake Blue is 17%. The ...

Math
the first term in the sequence is 256. after the first term, each term is multiplied by two amd then divided by four. what is the value of the 9th term

MATH PRECAL HELP
Business. The profit, in thousands of dollars, for a product is p(X)=-x^2+140x-4700 where x is the production level in hundreds of units. Find the production level that maximizes the profit. Find the maximum profit. The maximum profit of \$ _____ is achieved when ______ units ...

Math
The odds of Macy passing her driver's test on the first try are 17:27 Determine the probability that she will pass her drivers test A. 1.588 B) 0.614 C) 0.630 D) 0.386 Is it C? (0.17 x 0.27)

Math
The ratio of the amount of money Jason had to the amount of money Wilson had was 12:13. After Wilson spent \$63, Jason had 3 times as much money as Wilson. a) How much money did Jason have? b) How much money do they have altogether?

Math
If P(A) = O.41 then P(Ā)= Which one is the correct answer?I can't figure it out 0.59, 1.00, 0.26, 0.82

math
Jim’s pool is the shape of a rectangle. The length is 6 m less than three times the width, and the perimeter is 68 m. Find the dimensions of the pool.

Math
Five red balls and seven green balls are placed in a bag. Each ball is unique. A person selects 5 balls from the bag. What is the probability that all 5 balls are red? A) 1 B) 1/792 (This is a fraction) C) 1/396 (This is a fraction)

Math
Teaghan plays basketball. She scored 18 of her 20 last free throws. ___ A) What are her odds in favour of her scoring a free throw? ___ B) What are her odds against of her scoring a free throw? ___ C) What is the probability of her scoring a free throw?

Math
Round 156.29 to nearest tenth and hundredths

Math
On a given blueprint, 1 inch = 30 feet. If the dimensions of a meeting room on the blueprint are 1.5 inches x 1.25 inches, what are its actual measurements?

Math
Choose a room you would like to decorate: _My Bed room___________________________ Measure the length of one wall in inches: ___72_______________________ 2. Choose a size of paper to use. *I recommend just using a standard 8.5 inch by 11 inch piece of paper. Then fold it ...

I am a 3 digit number. The digit in the hundreds place is 4 times the digit in the ten place. The digit in the ones place is the sum of the digit in the hundreds and ten places. If the digit in the hundreds place is 4, what am I?

Math
A game has 30 cards numbered 1 through 30. e cards are shu ed. one card is picked at random. Find each probability. Which cards would give a probability of 1/10 they were picked.

math
A nurse has a 30% alcohol solution and an 80% alcohol solution. He needs 10L of a 40% alcohol solution.

math
1.Find the value of this fraction computation: 6(1/2 + 2/3+3/4) Calculation With Distribution (Show all steps.) Calculation Without Distribution (Show all steps.) 2.Find the perimeter of a rectangular area with a length of 13 inches and a width of 7 inches. Calculation With ...

math
in a rational number... nemerator is 3 less than the denominator. if 3 is added to the numerator.. fraction becomes 1. find the fraction??

Math- Need Help..
I'm having trouble with a question from one of my math assignments and it's driving me crazy. Its: -2/5x - 9 < 9/10 (two-fifths and nine-tenths) I tried doing it a few times, it might be easier than it looks and I just don't understand. If someone can help, that would be ...

math
I am prepping for a mid-term. A deep sea diving bell is lowered at a rate (constant). After 10 min, the bell is at a depth of 300 ft. After 30 min the bell is at a depth of 1400 feet. What is the ave. rate of lowering per minute? Thanks

math
okay so I have two questions that i'm completely stuck on ;-; 1.You want to buy three books that are on sale at 20% off. The original prices of the books are \$2.50, \$4.95, and \$6.00. How much will you save? Calculation With Distribution (Show all steps.) Calculation Without ...

math
Use the Distributive Property to expand the expression –3(6.3x + 1.5y).

Math
Explain how you know to use a variable in an addition or subtraction expression

math
An urn contains 10 red balls, 6 green balls, 15 orange balls, and 14 blue balls. If one ball is randomly drawn from the urn, what are the odds against the ball being red? State your answer as a ratio using a colon to separate the two numbers.

Math
A photographer changers a sitting fee of \$15for each pose writte a function to describe the situation find a reasonable domain and range for up to 5 pose

Math
Tia ran 2 and 7/8 miles. George ran 1 and 1/10 miles.About how many more miles did tia run than George? Place a star on the number line to show your estimate

Math
A page out of a magazine had a 15 by 15 sheet of 225 stickers. How many of these stickers are not on the border of the page?

Math
A green paint is created by mixing 3 parts of yellow with every 5 parts of blue. How many gallons of yellow paint are needed to make 44 gal of this green paint?

Math

Math
The blueprints for a new house or scaled so that 1/4 inch equals 1 foot. the blueprint is the preimage and the house is the dialated image. The blueprints are plotted on a coordinate plane. A. What is the scale factor in terms of inches to inches?

Math
In angle DEF, d=13.5 cm, e=18.2 cm and F = 60 degrees Determine the measure of f to the nearest tenth of a centimetre. I know the answer is 16.4 cm but how do I get it

Math
How to find the average of decimals

Math
Matthew got 36 problems rights out of a total of 40 problems on a tes.wht percent of the problems did he her rights

Math
All planets revolve around the sun in elliptical orbits. Uranus's furthest distance from the sun is approximately 3.005 times 10 to the ninth power km, and it's closest distance is approximately 2.749 times 10 to the ninth power km. Using this information, what is the average ...

Math
Li cut a 6inch piece of string into pieces that are each 1/2 how many string did she get

Math
Each ounce of a substance A supplies 2% of the nutrition a patient needs. Substance B supplies 15% of the required nutrition per ounce, and substance C supplies 15% of the required nutrition per ounce. If digestive restrictions require that substances A and C be given in equal...

math
hOW can I solve this by elimination? I know how to solve by substitution but not elimination 3x – 2y = 0 9x + 8y = 7

math
how would I solve this using ELIMINATION not substitution -2x+3y=1 -4x+y=-3

Math
John is makeing a book and he use 228 digit how many page does he have

Math
So my question is find the circumference of the circle in terms of Pi then use the approximation 3.14 for pi and approximate the circumference. How would I do this? The radius of the circle is 2m.

Math
Hi, if anyone can help me with this problem I would greatly appreciate it. I understood all my other math problems except for this one. So if anyone could help walk me through the steps so I know for next time how to solve problems like this I would appreciate it :D. 1.Write ...

Math
Multiple Choice   Choose the best answer. For questions 1–3, rewrite the expression using exponents. 4 × 4 × 4 × 4 × 4 A. 54 B. (My choice) 45 C. 44 ====== 3 × 3 × 3 × 3 A. (My choice) 34 B. 43 C. 35 ===== 10 × 10 × 10 A. 310 B. 101 C. 103 (My choice) ====== For ...

Math
1/11 x 3/9

Math
On a given blueprint, 1 inch = 12 feet. If the dimensions of a recreation room on the blueprint are 2 inches × 1.75 inches, what are its actual measurements? 1 ft x 12 ft 6 ft x 7 ft 22 x 18 ft 24 ft x 21 ft WHAT IS ANSWER HAVE NO IDEA PLZ!

Math
I am supposed to figure out what this rational function is by using these clues and I am a little confused. Can someone please explain how I do this? asymptotes: horizontal~none vertical~x=-4 slant~y=x+1 end behavior~ f(x) approaches infinity as x approaches infinity; f(x) ...

math
Paulo earns a salary of 15000\$ per month for selling cell phones. He receives an extra 30\$ for each cell phone over 100 units that he sells. How much will be make if he sells R cell phones? 50 cell phones?

math
Grandmother is 3 years younger than grandfather. Nine years ago, the sum of their ages was 105. How old are they?

math
solve this system of equations using the linear combination method -3x+12y=-27 5x+20y=15

Math
-6 greater equal to 13 + 5 which of these values of X makes the inequality true -3.9 -1.2 3/13 -7/15 Please help explain answer

Math
-6 greater equal to 13 + 5 which of these values of X makes the inequality true

Math Algebra 8
a={1,3,4}, b={x| x is an even whole number less than 9}, c={2,5,7,10}, and d = {x| x is an odd whole number less than 10} b U c

math
Julia’s frogs are 2 5 of the amount of Rimma’s frogs. If Rimma gives 1 2 of her frogs to Julia, what will be the ratio of Julia’s frogs to Rimma’s frogs?

Math
How much of​ a(n) 60% orange juice drink must be mixed with 8 gallons of a 30% orange juice drink to obtain a mixture that is 50% orange​ juice?

Math
The manager of a store selling tea plans to mix a more expensive tea that costs \$5 per pound with a less expensive tea that costs \$2 per pound to create a 140​-pound blend that will sell for \$3.80 per pound. How many pounds of each type of tea are​ required?

Math
The perimeter of a rectangular garden is 108 meters. The length is 6 meters longer than twice the width. Find the dimensions of the garden.

Math
What is the word form for the number 12+0.2+0.005

math
can any one show me how to solve this problem 12 -(1/2 + 2/3)

math
89.75 scooter;7 1/4% tax

math
w/6+5/8=-1 3/8

math
the expression 1/4y+3/8 factored is?

Math
Each ounce of a substance A supplies 2% of the nutrition a patient needs. Substance B supplies 15% of the required nutrition per ounce, and substance C supplies 15% of the required nutrition per ounce. If digestive restrictions require that substances A and C be given in equal...

Math
you want to buy three books that are on sale at 20% off. the original prices of the books are \$2.50, \$4.95, and \$6.00. How much will you save? Calculation With distribution. Calculation without distribution.

math
Two small charged spheres are placed so that their centres are 12.5 cm apart. The force of repulsion exerted by one charged sphere on the other is 0.432 N. If the charge on one of the spheres is +2.50 x 10-7 C, then the charge on the other sphere is Select one: a. +3.00 x 10-6...

Math
An airline manager found that during a 24-hour period,1,400 passengers passed through one terminal.What was the rate of passengers flow?

Spanish
1. Choose the most logical answer for this question: ¿Dónde está el teclado? (1 point) El teclado está en el ratón. El teclado está debajo del ratón. El teclado está al lado del ratón. El teclado está encima del ratón. 2. Choose the most logical answer for this ...

math
the diffrence is 90 and the quotient is 10

Math
For questions 1–3, use the Distributive Property to write an equivalent expression. 1. 2f + 10 (1 point) A. f(2 +10) B. 2 (f + 5) C. 2(f + 10) 2. 20 + 24g (1 point) A. 4 (5 + 6g) B. 20 (1 + 4g C. 5 (4 + 6g 3. 32b - 20 (1 point) A. 4(8b - 20) B. 2(32b - 10) C. 4(8b - 5) For ...

Math
1)Susan wants pizza for her birthday party. It costs \$8 per pizza plus a \$5 delivery fee. She doesn't know how many she needs, so she calculates the price for various numbers of pizza. How would I find out if this is linear or non-linear

Math
A car rental agency advertised renting a car for \$26.95 per day and \$0.31 per mile.If Kevin rents this car for 33 ​days,how many whole miles can he drive on a \$250 ​budget?

math
Clarence is a salesman who receives 8% commission on every sale he makes . If his most recent sale helped him earn \$216 in commission , how much was his sale ? I tried this but getting the wrong answer actual answer is \$2,700

math
Rita would like to change a \$10 bill into dimes and quarters. she wants to have 12 more quarters than dimes.how many of each should receive?

Math
how many whole numbers are between the square root of 8 and the square root of 80?

Math Help
The area of the parallelogram is given. Find h ———————————-\ | \ \ | \ \ h | \ 12m2 \ | \ \ | \ \ | \ \ — — ——————————--\ h 6m

math
clarence us a salesman who receives 8% commission on every sale he makes. If his most recent sale helped him earn \$216 in commission , how much was his sale?

math
Jan and pete are home decorators. Jan can paint 3 rooms in 2 hours. Pete can paint 2 rooms in 3 hours. If they work together, about how many hours will it take jan and pete to apint 6 rooms.

math
a radio program has a quiz consisting of 3 multiple choice questions, each with 3 choices. A contestant wins if he or she gets 2 or more of the questions right. The contestant answers randomly to each question. What is the probaility of winning?

Math?
Which expression is equivalent? −5(−3x − 6) A) 15x + 30 B) 15x − 30 C) −15x + 30 D) −15x − 30

math
A bag contains 12 red balls and 10 blue balls. A ball is drawn at random. The probability that ball drawn is red is

Math
A new stretch of road is 9.14 miles long, and is constructed primarily out of asphalt. Each lane is 18.0 feet wide, and the road only consists of two lanes. The average thickness of the asphalt along the road is 5.49 inches. How many cubic meters of asphalt is there in the ...

Math
In tje equation y=15x-45 Would the slope be 45 or -45? I think it’s -45.. am I right?

math
The number of years of education of self-employed individuals in the United States has a population mean of 13.6 years and a population standard deviation of 3.0 years. If we survey a random sample of 100 self-employed people to determine the average number of years of ...

Math
In a group of 40 students, 22 study Economics, 25 study Law, and 3 study neither of these subjects. Determine the probability that a randomly chosen student studies: 1. Both Economics and Law 2. At Least one of these subjects 3. Economics given that he or she studies Law I ...

Math
Translate the phrase into an algebraic expression. Five times k A 5k (my answer) B k + 5 C k divided by 5 D 5 - k Evaluate the expression when a = 6 a-24 A - 30 (My answer) B - 18 C 18 D 22 Evaluate the expression when s = 9 and t = 12 2s - t A - 6 B 6 C 15 (MY ANSWER) D 30

Math
(1) The curved surface area A of a cone of height and base radius is pie R squareroot H square+T square. (a) Make H the subject of the formula. (b) Find the height of a cone of area 550cm Square and base radius 7cm, taking pie to be 22/7. (2) if nSquare _ 1 over m = 4. (a) ...

math
What is the solution to (4 x 10^3) x (6 x 10^6), written in scientific notation?

math
solve the inequality. explain each step and identify the property used for each step. 5z >_ -75

Math
Betty decides to compare the diagonals of both the square and rectangular tables customers will use in the coffee shop. Her measurements show that the square tables have a side length of 34 inches and the rectangular tables are 29 1/3inches wide and 35 inches long. She uses ...