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math
simplify (1+3i)(1-5i)
math
Each day, Mr. Samms randomly chooses 2 students from his class to serve as helpers. There are 15 boys and 10 girls in the class. What is the probability that Mr. Samms will choose 2 girls to be helpers
math
solve(x-1)^2=-4..... i used the quadratic formula but got stock ... please help thank you
Math
The average of to consecutive Even integers is 17. Find the largest of the four integers ?
Math
A box of tacks weighs 120 grams when full, when half full it weighs 70 grams. How many grams does the box weigh when empty?
Math
A box of tacks weighs 120 grams when full, when half full it weighs 70 grams. How many grams does the box weigh when empty?
Math
John spent 1/4 of his paycheck on games. Then he put $24.00 into his savings. He then had 1/4 of his paycheck left. How much was his original amount?
Math
29166.66666 round up to the neareast whole number.
math
make a line plot recording wind speeds during hourly intervals during a day 10,10, 5, 25 10, 20, 30, 10, 35, 35, 5, 50
Math
if 3/4 of the 2000 raffle tickets were sold, how many tickets were sold ?
math calc
integral of : x^2 square root of (x-1)
math
Mary Katherine has a bag of 3 red apples, 5 yellow apples and 4 green apples. Mary takes a red apple out of the bag and does not replace it. What is the probability that the next apple she takes out is yellow?
MATH
Give an example of an ordered pair that is plotted by only moving right from the origin along the x-axis
math irregular figures
if the base is 46km and the other base is 26km and the height is 17km and the the little line in the middle say 11m wha tis the area
MATH
Brandon received a book for his birthday and read thirty-six pages in 2 hours. Later, he read fifty-four pages in 3 hours. Does his reading follow a direction variation?
Math
What are the 4 main mathematical instruments?
math
Marie is cleaning an area of her yard to make a garden. She wants to make a rectangular garden with a perimeter of 38ft. What is the greatest area possible that Marie can make the garden? Use only whole numbers.
math
The volume of each shape is 250 cubic inches. A) Find the height of a cylinder with a radius of 3 inches. 250/3^2/ 3.14 = height of cylinder? B)Find the radius of the sphere. Is it just 3 inches? C) Find the height of a cone with a radius of 3 inches. I need help with this can...
Math Problem ( 6th grade math)
Brandon tosses a coin 500 times. The coin lands on tails 320 times. A: What is the experamental probability of getting heads? B: Is the coin fair or unfair? Explain you answer.
Math!!
Eric bowls 35 times and gets 15 strikes. Fine the experimental probability that eric will bowl a strike. The answer first. Then explain what you did to get the answer
math
Find the distance to the horizon @ 32,000 feet.
Math
Pair of functions fx=3x and g(x) =3x^2-2x+3 find the following (f◦g)(x=)
Bus.Math
John O'Sullivan has just completed his first year in business. His records show that he spent the following in advertising: Newspaper $725 Radio $525 Yellow Pages $700 Local flyers $425 What percent of John's advertising was spent on the Yellow Pages? (Round to the ...
Business Math
Shelley Katz deposited $30,000 in a savings account at 5% interest compounded semiannually. At the beginning of year 4, Shelley deposits an additional $80,000 at 5% interest compounded semiannually. At the end of 6 years, what is the balance in Shelley's account
Math (need formula)
I would be very appreciative if someone could provide me with the formula I would use to plug these figures into a graph. 3. A 2m length of board rests with one end on the floor and the other end on a small stack of bricks. A baseball is rolled up the board and back down again...
Math
ive the numbers of elements in the regions marked I, II, III, IV, V, VI, VII, VIII in the figure U| = 150, |A| = 35, |B| = 12, |C| = 12 |A∩B| = 4, |A∩C| = 3, |B∩C| = 3, |A∩B∩C| = 1
math
please help... evaluate (27^1/9)^3
MTE520 Maintaining an Effective Learning Climate
Second Grade Classroom Scenario As Miss Gibson’s second graders break out into their learning centers, a scuffle starts in the writing center. Two boys are shoving and pushing each other. Miss Gibson stops the class and yells, “Boys stop!” Instead of stopping, ...
math
solve for x 1/2x + 3/4x= 7/8x^2
Math
What is the rule if the input number is 32 and the output is 5 input number is 40 and the output is 6 input number is 48 and the output is 7 input number is 56 and the output is 8 input number is 64 and the output is 9
math
What is the inverse of the following statement? If it is night, the street lights will come on.
math
Selma reached into a coin jar, randomly pulled out 100 coins, and found that 20 of them were nickels. If the jar originally contained 250 coins, what would be a reasonable estimate for the total number of nickels originally in the jar before Selma took any out?
Math
Snowflakes have six identical arms. Using the centre of the snowflake as the point of rotation,what is the smallest positive angle through which you could rotate the snowflake so the arms line up?(The rotated snowflake would match the appearance of its original position.) ...
math
if I brought 6 horses and 7 cows for total cost of $2500 and a farmer buys 13 cows and 1 horse for total cost of $2310 what is the price of the cows and the horses each,
math
how much does a car weigh in kg?
math
14!/19*18*17*16*15
math
ral sal tal val each have 1.85 in quarters and dimes.No two have the same number of coins together how many quarters do they have
math
lisa rolls a number cube two times. the first time she gets a 3. list all the possible outcomes of lisa's two rolls.
math
drawing several kinds of triangles including a right triangle, than draw a square on each of the sides of the triangles. compute the area of the squares and use this information to investigate whether the pythagorean theorem works for only the right triangles.(use a geometry ...
math
A ladder is leaning against a wall. It touches the wall 60 feet from the ground. The bottom of the ladder is 20 feet from the wall . What is the Slope of the ladder ?
math
using thepythagorean theorem and if the quadrilateral with side c is a square.then compute thearea of the square with side a + b:(a) as (a + b)2 and (b) as the sum of the areas of the 4 triangles and the square withside c.
Math
Does a small cylinder have the same three demension as a large one
Math
A customer requests a loan advance of $300 with an annual interest rate of 22%. What is the dollar amount of the interest for the entire year
math
the measure of an angle is 28 degrees greater than its complement. Find the measure of each angle.
math
a cb radio station c is located 3 mi from the interstate highway h. the station has a range of 6.1 mi in all directions from the station. if the interstate is along a straight line, how many miles of highway are in the range of this staion?
math
a company want to lay cable across a lake. to find the lengh of the lake, they madethe measurements 180ft and 150ft. what is the length of the lake?
math
a ramp is 1m above ground level and starts 3m from a building. how long is the ramp?
Math
Diana practices the piano 45 minutes each day o Sunday, Tuesday, Thursday, and Saturday. How many minutes does she practice the piano each week?
Math
Think about dividing with 15. Give a reason to divide15 into 3 equal groups. Then give a reason to divide 15 into equal groups of 3. How are the stories alike? How are they different?
Math
How many days in 2 years
Math
Write an addition problem in which, when the addends are rounded to the nearest ten, the sum is 90. Then explain how you use estimation to solve the problem.
Math
Explain a strategy you could use to mentally solve this problem? 33 1/3 of 48
Math 7 (Q3)
If a store is selling boxes of pudding at 3 for 0.99, how much would 12 boxes cost? Answer $_________ 3/0.99 = x/12 ????? right????
math 5th grade
Robert buys a pair of pants and a shirt for a certain price .The shirt accounts for 2/5 of the total price of both items. He pays $36 for the pair of pants. If Robert gives the cashier $100, how much change will he receive after buying the pants and the shirt?
Math asap
Explain a strategy you could use to mentally solve this problem? 33 1/3 of 48
Math {ASAP}
Explain the strategy you used to solve this problem? 10% of 20
5th Grade Math Algebraic Expressions
What is the algebraic expression for six is fifteen less than three times a number?Please Help.! -Keke
Math
At Irv's Rental Shop, Irv rents all kinds of cycles: unicycles, tandem bikes, regular bikes, and even tricycles for little kids. He parks all the cycles in front of his shop with a helmet for each rider strapped to the cycles. This morning Irv counted 57 helmets and 115 ...
Math 7 (Q2)
Cindy is making a punch for a party. The recipe calls for 3 bottles of cranberry juice in order to make enough punch to serve 40 guests. How many bottles of cranberry juice will Cindy need in order to make enough punch to serve 100 guests? Answer ___________ bottles so..... 3/...
Math 7
On a county map, 2 towns are 80 km apart. If the scale on the map is 1 cm = 5 km, how far apart are the towns on the map? Answer - ________________ cm 1 cm = 5 cm it's like a pattern ... so you multiply 80 times 5 which = 400 so the answer is 400......???????
math
what is the answer to did you hear about... on worksheet page 106
Math 7 - help
Nikki reads 896 pages of her book this week. How many pages is this per day Answer __________ pages per day Do I have to do a proportion? If I do what do I have to write down????? That what I'm having trouble with. I already know how to solve the proportions thought.
Math
Well A player makes 4 of 12 free throws. Question: What is the Probability that the player makes the free throw?
MATH
Brandon received a book for his birthday and read thirty-six pages in 2 hours. Later, he read fifty-four pages in 3 hours. Does his reading follow a direction variation? Explain
math
I don't get these problems at all and i have to turn 22 questions in on this tomorrow PLEASE HELP!!! 6x+2=x-1 and 2(x-1/2)=4(x+1/4)
6 grade math
Can you help me with this integer problem? -8+6+(-10)+(-2)*(-10) is it 8????
Math
10 +(-5)=P
math
Can you help me with this integer problem? -8+6+(-10)+(-2)*(-10) is it 8????
Math
Johnsons accumulated a nest egg of $40,000 to use as down payment toward a new home. Present gross income has them in high tax bracket, decided to invest min $2400/month in payments (for tax break). Financial obligations cannot exceed $3000/month. If local mortgage rates were ...
math
Adrienne had a party at a local bowling alley. She spent seventy-five dollars for the lane and five dollars per person for shoes. Let c be the total cost of the lane and shoes, and let f be the number of friends at her party. Write an equation to represent the problem. Which ...
math
A customer is buying a $100 drill and two $15 drill bit sets. The customer uses a gift card worth $50 to pay for a portion of their bill. How much cash will the customer pay (before taxes)?
Math
Johnsons accumulated a nest egg of $40,000 to use as down payment toward a new home. Present gross income has them in high tax bracket, decided to invest min $2400/month in payments (for tax break). Financial obligations cannot exceed $3000/month. If local mortgage rates were ...
Math
Sarah secured a bank loan of $200,000 for the purchase of a house. The mortgage is to be amortized through monthly payments for a term of 15 yr, with interest rate of 6%/year compounded monthly on the unpaid balance. She plans to sell her house in 5 yr. How much will Sarah ...
math
two cities are 1,900miles apart. a map uses a scale of 3cm=500 miles. how many centimeters apart are the two cities on the map?
math
he boys of a school can be arranged in 12,15 and 18 equal rows and also into a solid square. what is the least number of boys that the school can have?(Hint: find LCM)
algebrA math
factor 2 t^2+5t+2
math: advanced geometry
if the surface area of a sphere equals the surface area of a cube, what is the ratio of the volume of the sphere to the volume of the cube?
math
a model of a house is drawn using a scale of 3in=15ft. what is the length of the actual house if the model has a length of 15in
math g 11
the kwans will need $50,000 in 3years to expand their business. what is the equivalent value today if inflation is projected to be approx 3.5% per year compounded anualy
grade 11 math
at giant tv sales, you can chose between 2 payments options for a new tv. 1st option is 2 pay $2399.99. 2nd option is to pay a $399.99 downpayment plus $2200.00 after one year. if interset is 4.2% per year, compunded quarterly, wich option is a better deal
math
jamie tookout $3000 loan, due in 4 years. if interset is 5.7% per year, compounded semi-annualy how much should jamies crediter be willing to except to pay off the loan today?
math: advanced geometry
a square pyramid resting on its base is filled to half its height with 320 cm^3 water. how much water is needed to finish filling the pyramid?
algebra math
Factor the expression 6x – 54.
Math
Determine the positive angle that would correspond to a rotation of -90 degrees. Explain your answer.
math
use a proportion to answer (2x-5)/6=(4x+1)/2
math
three coins, a half-dollar, quarter, nickel are tossed at the same time. to say that there is an outcome xyz means that the half-dollar, landed x, the quarter landed y, and the nickel landed z. the eight equally likely possibilites can be listed as follows: HHH HHT HTH HTT THH...
MATH
KAY IS MAKING A SHARK MODEL. SHE WANTS TWO FINS OF THE SAME SIZE. SINCE EACH FIN WILL BE A RIGHT ANGLED TRIANGLE, SHE CUTS OUT A RECTANGLE. WHY DOES SHE DO THIS?
Math
John has two part time jobs. He works no more than 40 hours per week. He earns $6 per hour from the first job and $8 per hour from the second job. To cover his expenses, he needs to earn at lease $210 per week. Which of the following system of linear inequalities shows the ...
math
input 27 35 42 54 output 38 46 - -
math
tax rate is $8.75% what is the tax due on a sale $15,500
math
$24 lft a 15 percent tip how much total
4th grade math
Kamala had5,026 grams of flour in a canister. She bought a 4,157 gram bag of flour. She poured some flour from the bag to the canister. As a result, the mass of the flour in the canister is now twice the mass of the flour in the bag. How much is in the bag now?
8 th grade math
each side of square is 6 in. long . a scale factor of 2/3 is used to draw a similar square. how long is each side of similar square . choices are 4in. ,6 in., 8in. ,answer not here i chose 8 in. is that right
Math
A ferris wheel makes one rotation in 15 minutes. Find your car's location and the angle of rotation after: 3 mins., 5 mins., 9 mins., 12 mins. The diameter of the wheel is 328 ft. and the height, with the base, is 369 ft.
math
anthony is selling mugs . the wholesale price is $2.95. retail price is $5 what is the mark up what percent is that
math 8th grade
perimeter of a rectangle is 32 in. wnat are the length and width that will give the rectangle the largest possible area? choices are 4in x 12in. ,5in.x 11 in.,7 in.x 9 in. ,8 in. x 8 in. i think 4 in. x 12in
math 8th grade
if length and width of a 3in. x5 ln. photo are tripled what scale factor relates the area 3,9,12,27 i answered 27 is this correct i tried 9 but got no answer
math
The mass of Mars is about 421x10^20 metric tons. The mass of the sun is about 1.998x10^27 metric tons. About how many times the mass of Mars is the sun? Give answer in scientific notation. The mass of the sun is about....times the mass of mars.
math 8th grade
22 points in game 1,18 points in game2, 20 in game 3 what was their mean score for these 3 games i answered 20 is that right
math
At a Little League game, three fourths of the people in the stands were kids and the rest were parents. If the ratio of dads to moms is 3:4, what percent of the people attending the game were moms? (Round your answer to the nearest percent.) Please show your work if possible! ...
8th grade math
length and width of a 3ln. x 5jn. photo are tripled what scale factor relates the areas choices are 3,9,12,27 i chose 3 because it said triple is that right
math
At irvs cycle rental shop, Irv rents all kinds of cycles: unicycles, tandem bikes, and even tricycles. He parks all the cycles in front of his shop with a helmet for each rider strapped to the cycles. This morning Irv counted 57 helmets and 115 wheels parked in front of his ...
Math
Amperes (abbreviated amp) measure the strength of electric current. An ohm is the unit of electrical resistance. In an electric circuit, the current varies inversely as the resistance. If the current is 24 amps when the resistance is 20 ohms, find the inverse variation ...
8 th grade math
12 is 150% of what number choices are 8,10, 18, 24 i answered 8 is that right?
8 th grade math
there are 6cars,2 trucks, and 2 motorcycles in parking lot. what is the probability that the first vehicle will be a truck? choices are 1/10 ,4/5, 1/5 or answer not here . i answered 1/10 is this right
8 th grade math
ann batted 12 times and made 9 hits what is the percent of her times to bat i put 66 2/3 is that right or it could be 75%
8 th grade math
length and width of a 3in x 5 in photo are tripled what scale factor is used i put 9 id that right
8 th grade math
perimeter of rectangular is 32 in .what are the length and width that will give the rectangle the largest possible area 4in,x12in. 5in.x11 in. ,7in. x9in. ,8in x8in. i answered 8x8
Math
Find a number between 1/4 and 13/20?
Pre-Calc/Math
Prove Identity: (1-cos2x/ tan x) = sin2x
8 th grade math
what is length of hypotenuse 16m is bottom measure and 12 m is side i added them together and got 28m is this right
Pre-Calc/Math
Prove identity: (sec x/csc x) + (sin x/cos x)=(2/cot x)
8 th grade math
a stack of fierwood is 8ft.x4ft.x4ft wood costs 1.00 per cubic foot what is total cost of stack 64.00
8th grade math
is 2/3 a fraction that can be renamed as a repeating decimal
8 th grade math
each side of square is 6 in. long aq scale factor of 2/3 is used to draw similar square , how long is each side of similar square?
math
5 cards are drawn at random from a standard deck of playing cards. What is the probability that all are the same suit?
8 th grade math
3in.x 5in. photo are triped what scale factor is used
math
a small plane sitting on a runway 5 miles west and 2 miles north of town is scheduled to fly to a second runway 17 miles east and 25 miles north of the same town. to the nearest mile, what is the distance between the two runways
Math
make a line plot or bar graph of a data distribution that fits each description. 1. 24 names, with a range os 12 letters. 2. 7 names, with a median lenght of 14 letters.
Intergration: Measurement (Math)
I don't get it. I need to find out these conversions. 15,000 g= ____ kg 5,000 mL= ____ L 75 mL= ____ L 390 mL= ____ L 0.03 m= ____ mm 6 m= _____ mm 2.48 L= ______ mL 43.2 L= ______ mL 807 mL= _____ L 3,751 m= _____ km
math
A map of the world has an area of 28 square feet. Its perimeter is 22 feet. What are the dimensions of the map?
math
if an office has an area of 120 sqare feet and a perimeter of 44 feet. what are the dimensions of this office.
math
A marine biologist tags 100 whales. Later, a sample of 115 whales was gathered and 5 were tagged. Estimate the total whale population.
Math
-8-5
math
what is the simplied form of (5m^-4n^2)^3
Math
On a graph coordinate A is -1,4 B is 6,4 C is 6,0 D is -1,-2. These coordinates form a rectangle. What is the area of ABCD?
math
what is x over 6 divided by x over 30?
math
weloo (a)find antiderivatives for the following functions : (i) e^5x sinh3x + 4x+6/x^2+3x+5 . (ii)root3x(x^2-2/x+1). (b)Evaluate the following integrals over the given intervals: (i)4/2x-1 - 3/x+4 over [1,3] (ii)cosh 3x-sinh4x over [0, ln2] (c)A particle is moving from rest ...
math
how many tons are in 35,00 lb?
math
garys cat weighs 11 lb.How many ounces is that?
6th grade math
Please check to make sure I did these correctly, so confusing. Thank you. Rename each fraction as a terminating or repeating decimal 13/20 .65 1/3 0.3333333333333333 2/9 0.2222222222222222 5/12 0.4166666666666667 1/16 0.0625 Rename each mixed number as a terminating or ...
Math- Radius
The volume of a sphere is V = 14,130 ft3. What is its surface area? What is it's radius? The volume of a sphere is V = 4443 m3. What is its surface area? What is it's radius?
Easy Math
If a basketball has a circumference of C = 2.98 ft, what is its surface area and its volume?
MATH
The probability that a voting-age adult in 2004 voted in the presidential election was 0.57. Five voting-age adults in 2004 were randomly selected. Find the probability that exactly 2 or the 5 adults voted in the presidential election.
math
A box contains five blue, eight green, and three yellow marbles. If a marble is selected at random, what is the probability that it is not blue?
math
If an object with the weight of 70 newtons requires 37 newtons to start sliding, what is the value of the coefficient of the static rounded to the nearest tenth?
math
how fast are 13 inch trailer tires going when my truck is going 55mph with 15" tires
math
2 planes parallel to the base of a pyramid cut the pyramid at 1/4 and 2/3 of the height as measured from the base up. If the volume of the pyramid is 100 cubic inches, what is the volume of the middle piece to the nearest tenth?
math
2006 the population of a country was 32.4 million. This was a 4.1% increase since 2001. What was the population in 2001?
Math
A hi-tech bowling ball is constructed from concentric spheres, kind of like a perfectly round M&M peanut. The inner sphere, of material X, has a radius of 1 inch. The middle spherical shell of material Y has a thickness of 2 inches. The outer shell of material Z has a ...
Math
A die is rolled, and the number that falls uppermost is observed. Let E denote the event that the number shown is even, and let F denote the event that the number is odd number. A. Are the events E and F mutually excluseve? B. Are the evnts # and F complementary?
math
x^2+x+3=0
math
30d^2+71d+42=0
math
4x-y=7 5x+y=20
math
1/5x+y=2 x-10++-5y
math
2x^-15y^15/x^20y^-10
math
what is the locus of the midpoints of the line segments joining a given external point to all points of a plane? (Locus is set in space aka 3d)
math
A solid cone is cut into two parts by a plane parallel to the base and 3/5 of the height of the cone above the base. Find the ratio of the volumes in the two parts.
Math
hello I need help to do this exercise Consider the function f (x) = (16 x + 33) / (x +3) 1) Determine its domain Df 2) Solve the equation f (x) = 14 3) Show that for all x in Df: f (x) - 15 = (x-12) / (x +3) 4) deduct the resolution of the inequality f (x)> 15. Thanks for ...
math
Franklin deposited $1,400 in a savings account that accrues simple interest at 6.75%. What is the balance in his account at the beginning of the third quarter?
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