Math

Recent Questions

Math
What is the etimated product of 4913 and 17

math
A mailbox is 15 inches long and 8 inches wide. The height of the mailbox before the curve is 6 inches. What is the volume of the mailbox? Use 3.14 for pi.

Math
Exponential Growth It turns out that zombies are created by a virus. In 2025 there are 450 people infected by the virus and the number triples every week. The population of Canada is 3,500,000. How many sees will it take for all of Canada to be infected?

math
Ann bob and cindy had some money. Ann had 20% of the total of the three kids.Bob's amount is 50% of the total amount of ann's and cindys. if cindy has $48 more than bob, how much money does cindy have?

Math
find an equation for a plane parallel to the xy-plane; does not pass through the origin. (I know how you would find the equation if it says passes through a certain point. But I'm confused how to do it if it says does not pass through certain point)

math
find the largest number that will divide 220,313,and 716 leaving remainder 3 in each case?

math
The population of a distrust was 22,41,289 two years ago if the population of the village increased by 48000 in two years what is the present population.? Solve and

math
The population of a distrust was 22,41,289 two years ago if the population of the village increased by 48000 in two years what is the present population.? Solve and

Math
solve the equation? 3x + 6=24

Math
ALi rents a car for d days. He pays m dollars per day for each of first 7 days, and half that rate for each additional day. Find total rent, if d greater than 7?

Math
Line CB is perpendicular to line AD at B between A and D. Angle BCA is congruent to angle BCD and line AC is congruent to line DC. Which congruency statements (HL, AAS, ASA, SAS, and SSS) can you use to conclude that triangle ABC is congruent to DBC? A)HL, AAS, ASA, SAS, and ...

Math
Jill shops once a week at a store. If the mean (average) amount that she spends per week is $27.20, how much did she spend in the past 8 weeks?

Math
Sam works 8 hours a day, 6 days a week, delivering flowers. And he earns $5.50 for delivering flowers per day, per hour. In 4 weeks, how much will he earn?

Math
Sam works 8 hours a day, 6 days a week, delivering flowers. And he earns $5.50 for delivering flowers per day, per hour. In 4 weeks, how much will he earn?

mATH HELP QUICKLY
can anyone help me with the unit 6 lesson 9 test??? I can post the questions I just need help!!!!!!

Math
1. In the expression -9x - 2 x^2 + 7 what is the coefficient of x? a. -9* b. -2 c. 7 d. 9 2. (m^2 - m - 3) + (m - 4) :add or subtract a. m^2 + m - 1 b. m^2 + 2m - 7 c. m^2 - 7 d. m^2 - 1*

Math
1. 16x^2 + 2 + 2x - 15x^2 - 1 + 14x a. 31x^2 + 16x + 1 b. x^2 - 12x + 1 c. x^2 + 16x + 1* d. x^2 + 16x + 2 2. 3x^2 + 6 - 2x + 5x - 4^2 + 9 a. -x^2 + 3x + 15* b. 7x^2 + 3x + 3 c. x^2 - 3x + 15 d. -x^2 + 7x + 15 3. 2x^2 + 6x - 7x + 8 -3x^2 + 1 a. 2x^2 + x + 9 b. -2x^2 - x - 9 c...

Math
If 3/4 of the employees in a supermarket are not college graduates,what is the ratio of the number of college graduates to those who are not college graduates? I have solved ,please check it. Let x total employees (3/4)× not graduates So (1/4)x are graduates Ratio graduates ...

Math
Michael has 1 liter of a mature containing 69%of boric acid. How much water must be added to make the mixture 50% boric acid ? Represent answer as fraction.

Math help?
What do I do in an equation if there is a number without an exponent within the parenthesis? One example being... (-2)^2 Thanks in advance!

Math
The price of a technology stock has risen to $9.68 today. Yesterday's price was $9.57. Find the percentage increase. Round your answer to the nearest tenth of a percent

Math calculus
(2) (-1) (3)+(4)

Math
Geometric series: n= infinity sign a1=5 r= -1/4 The equation 5(-1/4)^i-1

Math
Find the coefficient of x^4y^3 in the expansion of (x+2y)^7

Math A Calculus
For a =( 2 ÷3)and b=(-1÷4)..Find a).. a+b b).. | a+b | c).. Find the length of the vector i + 2j-- 2k

Math
I am an even number less than 100.One of my factor s is 13.I am made from two consecutive digits.What number am I ?

Math
An aircraft has airspeed of 300km/h and it's course is 020°. The speed of the wind is 80km/h blowing from 320°..sketch the diagram to represent this information (ie: the triangle of velocities).

Math
A man walk 9km in the direction 246 degrees and then for 6km in the direction 096 degrees...... What is the displacement from the starting point?..... Formula and answer please?

Math
A man walk 9km in the direction 246 degrees and then for 6km in the direction 096 degrees.... What is the answer in diagram Form?

Math (Sorta dumb question)
I'm given the equation S = L(1 - e^(-kt)) I am asked to write S as a function of t when L = 100, S = 25 when t = 2 So would my final answer just have S and t as variables? Or have S, t and L as variables? Ended up with S = 100(1 - e^((ln(3/4)/2)*t) Or is the actual answer S = ...

Math
Student tickets to the Homecoming game cost $5 each. General admission tickets cost $8 each. So far, 150 tickets have been sold. $900 has been collected. A. Write a system of equations for this model in standard form. B. Graph the system. ( let each square represents 20 units...

Math
Geometric series: Finite and infinite n=5 a1=243 r=2/3 i=1 This is the equation 243(2/3)^i My answer is 633 n=infinity sign a1=5 r=-1/4 i=1 The equation 5(-1/4)^i-1 I think its undefined

Math
if four congruent squares corners are cut from the large square of the cardboard to make a box, what is the area of the shaded figure in terms of x and y?

Math
Sin theta sin(90- theta) cos theta cos(90-theta)=0

Math
Find the coefficient of x^5y^7 in the expansion of (5x+2y)^12 12 (x)^5 (2y)^7 3 My answer which i got wrong is 220x^5(128y^7)= 28160x^5y^7

Math
Cos theta=9/41 and the terminal arm of the angle is in quad.4. Find remaining trigonometri functions?

Math
Arithmetic sequences Find a8 and an for the sequence: -3, -7,-11

Math: Trigonometry
Quadrant III, csc(theta)= -1.25, find tan(theta) Quadrant IV, sec(theta)= 4/3, find cot(theta) Please provide the work for both. Thank you!

Math
The ratio of the number of freshman to old students to juniors to seniors on a college basketball team is 4:7:6:8.what percent of the team are old students?

Math
Last year, the ratio of the tennis matches ta that central college young boy's team won to the number of matches they lost was 7:3.what percent of their matches did the team win ?

Math
So I have 4 questions. We were doing ratios in class and we have to figure out either the part or the total; 1. Katie and May took turns driving to Chicago. May drove 5 out of 11 miles. By the time they reached Chicago, May had driven 12 less miles than Katie. How many miles ...

math
find the ratio x:y (hint: same as find x/y): 2 1/2 x = 4 1/2 y

Math
If a > b and c < 0, then: Select one: a. ac > bc b. a/c>b/c c. ac < bc d. None of the above I have no idea how to answer this questions because there aren't any numbers!

Math
There Are 36 Children That Are To Attend A Ceremony In Zaria, Out Of This Number Six Children Were Absent What Fraction Of The Children Are Absent?

Math
Here's another problem The number of homes sold is growing according to a linear growth model. The first week 4 homes were sold (P0=4) The second week a total of 10 homes were sold. (P1=10) n=0-1st week po=4 p1=10 d=6 n=1-2nd week d=p1-p0=10-4=6 Write the recursive Formula for...

Math
A square painting measures 2 meters on each side. What is the area of the painting in square centimeters? What is it in cm^2?

Math
Please Help! The number of cars sold weekly by a new automobile dealership grows according to a linear growth model. The first week the dealership sold five cars (P0=5 ). The second week the dealership sold cars (P1=12 Pn = Pn−1+7 12-5=7 Pn=5+7n If this trend continues, how ...

Math
The price of a technology stock has risen to $9.68 today. Yesterday's price was $9.57. Find the percentage increase. Round your answer to the nearest tenth of a percent

math
Question 2 of 5 Instructions:Select the correct answer. A store sells 12-packs of ballpoint pens for $1.09 each and composition books for $2.79 each. Cindy buys m packs of ballpoint pens and n composition books. The store offers a 5% discount for every 50th customer who makes ...

Math
how is using a conversion factor different from using proportions to convert measurement units? Explain which is easier and why.

Math checm my answer
Katrina lives directly east of the park. The football field is directly south of the park. The library sits on the line formed between Katrina’s home and the football field at the exact point where an altitude to the right triangle formed by her home, the park, and the ...

Math~Algebra
Write an equation in point-slope form for the line through the given point with given slope. (-7.9); m=4/5 A- y+7=4/5(x-9) B- y-7=4/5(x+9) C- y-9=4/5(x+7) D- y+9=4/5(x-7)

Math
Are the ratios 25/45 and 15/27 proportional?

math
David bought one dozen toffees .He ate 1/3 of them.How many toffees are left?

Math
How would I go about solving y - 6 is greater than or equal to = 12?

Math
I want to confirm my work. Thanks in advance for the help. #1. Write the quadratic function in general form given that the function has an x-intercept of 6 and 1, and a y-intercept of 9. x= 6, 1 y= 9 (0,9) y=a(x-r1)(x-r2) 9=a(0-6)(0-1) 9=a(-6)(-1) 9=a(6) a=3/2 y= 3/2(x-6)(x-1...

Math
If ajay spent 1/9 of his pocket money of Rs.450 on chocolates and 2/5 on fruits. How much money is left with him?

math
An airplane flies 1080 miles with a constant speed of 720 mph and another 3812.7 miles with a constant speed of 760 mph. What is its average speed for the total trip?

math
A van moves 125 km in 1 1/4 hours.What is its average speed in kilometers per hour?

Math
The element strontium-90 is radioactive. The percent of strontium -90, A(t), left in a sample can be modelled by the half-life function A(t) = A0 (1/2)^t/29, where t represents the time, in years, after the initial time, and A0 represents the initial amount, 100% of the ...

Math, probability
A number cube is labelled 1 to 6. The cube is rolled 60 times. Predict how many times each outcome will occur. Explain each answer. a)1 is rolled. b)An even number is rolled c)A number greater than 3 is rolled d)9 is rolled. You don't have to answer every question. Just answer...

Math
∆ABC in which AB=10cm,BC=11cm and angle B= 45°

Math
You mix the letters M, A, T, H, E, M, A, T, I, C, A, and L thoroughly. Without looking, you draw one letter. Find the probability write: Faction in simplest form Decimal Percentage Learned the rest but this o.o ty

math
the stem-and-leaf plot shows the height, in inches, of the players on two different basketball teams. How many players on each team are less than 70 inches tall? Heights of Players In inches Austin College Barton College Leaf Stem Leaf 6 7 8 8 9 6 4 6 8 1 1 2 6 7 1 1 1 3 4 5 1...

Math (Calc) (Differential Equations)
The rate of change in the number of miles s of road cleared per hour by a snowplow is inversely proportional to the depth h of snow. That is, ds/dh = k/h Find s as a function of h given that s = 25 miles when h = 3 inches and s = 10 miles when h = 9 inches (2 <= h <= 15...

math
A standard number cube with the numbers 1 through 6 is rolled. Find the probability of rolling a number greater than 4. A number cube is rolled 360 times and the results are recorded as follows: 41 ones, 54 twos, 62 threes, 75 fours, 33 fives, and 95 sixes. What is the ...

math
John, mary and peter shared some apples in the ratio 1:2:3 repectively. If mary got 14 apples, how many did john and peter got

Math
If a coin is tossed and a number cube is rolled, what is the probability that the coin shows heads and the number cube shows 3? I got 1/12 The choices are 1/12, 1/2,1/9,1/6, I tried everything and I'm not really sure about my answer.

math help
The number of trucks registered in a city increases by 10% each year. Initially, there were 100 trucks registered. There were 110 trucks registered at the end of Year 1. What is the number of trucks registered in the city at the end of Year 8? how do i solve this? im kinda ...

math
A packet of soup makes 9 bowls of serving . How many 3/4 bowls of serving are possible ?

math test help
help me n the exploring probability unit test all answers please!!!!

math
Shayne wants to earn money to attend a basketball camp. For her 8th-grade graduation, her grandmother gave her part of the money she needs. Every month since then, Shayne has been saving the same amount from her babysitting jobs. After 3 months she had $155, and after 7 months...

math
1. which ratio form a proportion? 4/9, 12/25 3/7, 18/42 5/11, 20/45 5/8, 15/25 2. which ratio forms a proportion with 18/30? 20/35 50/90 36/48 60/100 ~MY ANSWERS~ 1. D 2. I don't know this one can someone help me please. I have tried for over 30 minutes on this.

math
2 Years before,average age of 8 numbers of family was 20yr.if present average of family even on inclusion of 1 child,remains same.present age of child is?

math
Ram and shyam jointly lend out rs17261 at 20% per annum compound interest such that rams amount for 2 year is same as is the shyams amount for 5 years.by how much does rams sum exceed shyams sum?

math
market price of an article is rs150. 2 successiue discounts are allowed on it.if second discount be 12 1/2% and selling price of article be 105rs.then first discount is?

math
A can fill in 5min and B in 20min.if both taps are opened then due to a leakage it took 30min more to fill tank.if tank is full,how long will it take for the leakage alone to empty the tank?

MATH
A game involves spinning the spinner. What is the probability of the pointer landing on R The spinner: R R R R B B Y G A. 1/4 B. 1/2 C. 1/8*** D. 3/8

Math (fractions)
I am not being lazy, I've tried to get this done several times, but I am VERY bad when it comes to fractions. Barbara, Donna, Cindy, and Nicole ran in a relay race. Barbara: 3 3/10 Donna: 2 4/5 Cindy: 3 2/5 Nicole: 2 1/10 1. The four girls ran in a relay race as a team. If ...

math
Find the function of that without simplifing it 1.f(x)2x2sinx

math
Find the derivatives of the following functions. 1.F (x)cotx 2.f (x)=sin (x2+2)

Math
Translate into mathematical expression 42 more than x

math
A cyclist took 3 1/3 hours to cover 46 km. For the first 30 km, he cycled at 15 km/h. Find his speed for the last part of the journey.

Math
Area of isosceles right angled triangle is 12.5cm .then find length of its hypotenuse .

math
The data set below shows the number of players on each softball team in a tournament: 9 12 8 7 7 21 11 9 8 7 10 7 10 11 Which of the following statements is true based on the data set?

Math
Evaluate the expression. P(9,4) A.1512 B.240 c.3024 D.15,120 (9) (4) the 4 is underneath the 9 in the parathesis with it A. 15,120 B.126 C.1512 D.240

math
A single, standard number cube is tossed. What is the probability of getting a number other than 6? A game involves spinning this spinner. What is the probability of the pointer landing on Y? The table shows the color preferences of 50 shoppers at the mall. What is the ...

Math
In how many ways can 4 people be chosen and arranged in a straight line, if there are 5 people from whom to choose? A shirt company has 3 designs that can be made with short or long sleeves. There are 5 color patterns available. How many different types of shirts are available...

Math
The first term is 23, and the common difference is 4 ; n= 5

Math
Write out the first five terms of the sequence an=3(4n-1)

Math
MIKE has a dog pen with an area of 120 sq. Feet. What is its width?

Math
Two thirds of Helen's age is half of Dales age. Dale is 10 years older than Helen. How old is Helen?

Math 6th Grade
Bob is planting in a rectangular container. In the center of the container he places a smaller rectangular tub with mint. The tub is 8 in. by 3 in. He plants flowers around the tub. What is the area of the container planted with flowers? The whole rectangle is 38 in by 25 in, ...

Math
Don bats in 9 cricket matches. In the tenth match, he makes 9 runs and his average decreases by two. How many runs has he made in all?

Math Explain
18x^2 + 6 + 4x - 15x^2 - 4 + 13x okay i know the answer is 3x^2 + 17x + 10 but i dont know how i got it can someone explain plz

Math
(5y^2 - 2y) + (9y^2 - 9y) My Answer 14y^2 - 11y am i right

Math Help
In the expression -9x-2x^2+7 what is the coefficient of x A. -9 *** B. -2 C. 7 D. 9 answer is A am i right

math
In △DEF, DF=16 and m∠F=45. Find the length of a leg. Leave your answer in simplest form.?

math
When the product of 6 and the square of a number is increased by 5 times the number, the result is 4. Which equation represents this situation? 6x2 + 5x - 4 = 0 6x2 + 5x + 4 = 0 62x + 5 + x = 4 6 + x2 + 5x = 4

math
18x^2 + 6+4x - 15x^2 - 4 + 13x My Answer 3x^2 + 17x + 2

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