# Math

## Recent Questions

**Math**

Find the $2 \times 2$ matrix $\bold{A}$ such that \[\bold{A} \begin{pmatrix} 1 \\ 0 \end{pmatrix} = \begin{pmatrix} 1 \\ 2 \end{pmatrix}\] and \[\bold{A} \begin{pmatrix} 0 \\ 1 \end{pmatrix} = \begin{pmatrix} -7 \\ 4 \end{pmatrix}.\]

**Math**

Consider the sequence t1=1, t2=-1, and that tn-tn-2(n-3)/(n-1), where n>2. Find the value of t1998. (1998 is the term, so is n, t1 and t2)

**Math**

A sphere has a radius of 16 cm and a plane passes thru it at 9 cm below the center, what is the area of the intersection between the plane and the sphere?

**math**

there are 64 seventh graders at a middle school. This is 32% of the students at the school. The sixth graders comprise 38% of the school how many sixth graders attend the middle school

**math**

Maya has 4 1/2m of ribbon. She uses 1 3/4m to wrap a present and 1/3m to make a bow. How much ribbon is left?

**Math help please help!!**

The angle θ lies in Quadrant II . sinθ=34 What is cosθ ? −√7/4 < MY CHOICE √7/4 3/4 −3/4

**Math**

I run 1 3/4 miles each day. my friend runs 4 times as far as I do. how far does she run ?

**Math ; Algebra**

What is x for the following questions? -2x-6=-12 3x+7=-15

**Math**

Thank you Ms.Sue but how do you work it out?

**Math**

How do you write the product as a product of a whole number and a unit fraction of 3×4/5 equals

**Math**

x y -2 -5 0 -1 1 1 2 3 A. Graph the ordered pairs. B. Is the function linear? Explain. C. Write a rule for the ordered pairs in terms of x and y. D. What is the value of y when x = 10?

**math**

Suppose an athlete earns $3,600,000 for endorsing a few different products. If 2/3 of the earnings are for endorsing clothing, how many dollars does the athlete earn for endorsing clothing?

**math**

calculate the amount a person would earn over a period of time if his or her salary were a penny the first day, two cents the second day, and so on doubling each day. Day Pay =============== 1 0.01000 2 0.02000 3 0.04000 4 0.08000 5 0.16000 Your total pay is 0.310000 MY ...

**Math. 10 Points.**

The diameter of a tire is 2ft A. Find The Circumference of the tire B.About How Mant Times Will The Tire Have To Rotate To Travel One Mile (SHOW YOUR WORK)

**math**

Find the cost of buying 4 dozen of exercise books at sh 6000 per dozen,a half dozen of pencil at sh 2050 per dozen,5 dozen rulers at sh 3600 per dozen #i need anyone to help me please# and in case someone has such type of questions,i am kindly need for practice *Thanks for the...

**math**

the formula for the perimeter of a rectangle is 2l+2w, where l is the length and w is the width. How can you use distributive property to write an equivalent expression for 2l+2w?

**math**

For his troops' popcorn fundraiser sale, Mike sold caramel corn for $10, buttered microwave popcorn for $8, and lightly buttered popcorn for $7. By the end of the fundraiser, he had sold 400 items and made $3,272. If he sold twice as many lightly buttered microwave popcorn ...

**Math**

What Is the measure of an angle that is complementary to a 47 degrees angles? A. 43 degrees B 53 degrees~~~ C. 153 Degrees D. 180 Degrees

**Math**

Explain How To Construct A Perpendicular bisector

**Math**

5 thousand 22 tens and 9 ones equals what number

**Math**

In triangle PQR, angle Q= 90 degrees, angle P= 60 degrees and angle R= 30 degrees. PR= 1 unit. Extend side QR to T such that PR= RT. Join PT. Calculate the exact measure of angle T. Determine the exact value of lengths needed to find tan T and then find tan T.

**Math**

6. Jackson Made A Poster In The Shape of A Quadrilateral. Each pair of opposite sides of the poster are congruent and parallel. Which of the following names best describes the shape of jacksons poster, A. Parallelogram ~~~ B. Rhombus c. Rectangle D. Trapezooid 7. As part of a(...

**Math**

If a boat was 36' long and i built a model of it 18" long what scale would the model be

**math**

at noon the temperature is .6.f but the temperature drops 2 degrees per hour for the next few hours?what is the temperature at 4 pm?

**Math**

Create a Raptor Flowchart that calculates the amount a person would earn over a period of time if his or her salary were five cents the first day, ten cents the second day, and so on doubling each day. Your program should: 1. Request the number of days. 2. Display a table ...

**Sequences Math**

Find the function rule. X = -2, -1, 0, 1, 2. Y = 9, 4, -1, -6 -11. Help please this is too hard

**MAth**

the two figures below are congruent. Find the measure of the angle that isn't labeled on either figure? Shows a 41, 86, degree on one, and the other one shows a 133 degree.

**computer programming**

Create a Raptor Flowchart that calculates the amount a person would earn over a period of time if his or her salary were five cents the first day, ten cents the second day, and so on doubling each day. Your program should: 1. Request the number of days. 2. Display a table ...

**math**

Please check my math answers (and correct?)? I have some math questions, please check them, (they are multi choice, check if my answer is correct. if not, please say which is correct) 1. What is the simplified form of the expression –(10)–1? a -1/10 b -1/-1^10 (my answer) ...

**applications of proportion math**

Centerville's population decreased from 37,065 to 26,102. How do I find the percent of change?

**Math**

The area of a parallelogram with a side of 5.6 in is equal to the area of a rectangle with sides 7 in and 8 in. Find the altitude to the given side in the parallelogram.

**Math**

When a class took a math test, 15% of the class failed, 25% made some mistakes (but didn’t fail), and 24 students got perfect scores. How many students were in the class?

**Math**

One of the sides of a parallelogram is 4.2 cm and the altitude to that side is 3.6 cm. Find the perimeter of the parallelogram if the altitude to the other side is 2.4 cm.

**Math**

The area of a parallelogram with a side of 5.6 in is equal to the area of a rectangle with sides 7 in and 8 in. Find the altitude to the given side in the parallelogram.

**math**

Find a nth term for this sequence 1/3,1/9,1/15,1/21,1/27..

**math - proportions and ratios**

A gardener found that he was able to plant 1/4 of a packet of flower seeds in 1/5 of a garden. At this rate, how much of the garden would he cover with the entire packet of seeds? A) 1/20 B) 4/5 C) 5/4 D) 9/2 I want to know how to set up the problem.

**math**

why do people have weight of 100 pounds

**Math**

What is a reasonable distance between two cities? 200km 200m ** 200cm 200mm

**Math**

Need help Given the following values, which point would be considered an outlier? x1 ,2 ,3 ,4 ,5,6, 7 ,8 ,9 y1.2,4.3,2.8,5.2, 6,7.1,7.9,9.4

**Math**

-3 + n/2 = 9

**Math**

How would I start both of these questions not sure. If h(x)=1/(x+3)^3 then determine a. f(x) and g(x) such that h(x)=(f of g)(x). b. r(x) and s(x)different from f(x) and g(x)such that h(x)=(r of s)(x)

**Math**

A die is thrown 240 times. What is the probability of getting fifty 2s. plss I have been stuck on this

**business math**

You want to buy furniture which will cost N$ 20,000. You could take out a personal loan for N$20,000, which would charge you 9% p.a. interest compounded monthly. You also have N$20,000 in an investment account, where you earn interest of 12% p.a. compounded annually. Taking ...

**math**

Find the area of the segment cut off by a chord of length 10cm from a circle radius 13 cm.

**Math**

There were 3 similar metal balls in the tank.if the 3 metal balls were out,the water in the tank would drop from 15 cm to 6 cm.find the volume of each metal ball.

**math**

what is the sum of all proper fractions with denominators less than ten? help me plssss

**Math - Derivatives**

Find the nth derivative of y=2x/(1-x^2) (Hint: Consider -[(1/(x-1))+(1/(x+1))].)

**math**

f(x)=ax^3+bx^2+cx+d and f(0)=-18 determine the equation of f

**math**

-8x 20 is a tangent to f(x) x^3 x^2 bx 18 at x=1 calculate the values of a and b I tried the question but I failed

**math**

Dallas was given a discount of 10 percent of the following items: 1/1/4 cartons of exercise books @ sh 42000 per cartons,ten cartons of pens sh 22000 each.How much did he pay all together after the discount of 10 percent? *I need anyone to help me please* And in case someone ...

**math**

the sum of two numbers is 20.one number is 3 time the other number . find the two numbers?

**math**

there were 825 pupils in a school. 52 percent were boys. more boys joined the school and the percentage of boys became 64 percent of the new total. how many boys joined the school?

**Math**

Can someone explain how to solve this equation using each step? I'm confused. (2^8⋅5^−5⋅19^0)^−2⋅(5^-2/ 2^3)^4⋅2^28

**math**

if secA=12/5 what is the value of A

**Math**

Graph y = -2X an y = -Xsquared what points do the graphs have in common? How are they different?

**Math/Calculus**

Find the equation of the tangent line to the given equation at the indicated point a) y^2=cos(5x-3y) at ((2pi+3)/5, 1) b) x^2+x^2y+4=0 at (2,-2)

**math**

Dallas was given a discount of 10 percent of the following items: 1/1/4 cartons of exercise books @ sh 42000 per cartons,ten cartons of pens sh 22000 each.How much did he pay all together after the discount of 10 percent? *I need anyone to help me please* And in case someone ...

**Math**

Use the table of values. x y -2 -5 0 -1 1 1 2 3 A. Graph the ordered pairs. B. Is the function linear? Explain. C. Write a rule for the ordered pairs in terms of x and y. D. What is the value of y when x = 10?

**math**

Find the cost of buying 4 dozen of exercise books at sh 6000 per dozen,a half dozen of pencil at sh 2050 per dozen,5 dozen rulers at sh 3600 per dozen #i need anyone to help me please# and in case someone know where i can get such the questions,i am kindly need for practice *...

**Math Derivatives**

Find f''(2) of function f(x)=xsin(pi/x)

**Math - Related Rates**

Air is being pumped into a spherical balloon at a rate of 2 cubic meters per minute. At what rate is the radius changing when the volume of the balloon is 36pi cubic meters?

**Math**

Find a formula for D^n_x(1/x). (The n is superscript and the x is subscript)

**Math**

If a recipe calls for 4 eggs for 8 people how many eggs would it be for 32 people

**Math**

Consider a number. Greater than 2 which do you think is larger, the sum if you add a number to itself 10 times, or the product if you multiply the number by itself 10 times? Explain

**Math**

Rod is 6feet tell he casts a 3-foot-long shadow at the Same time a tree casts an 8-foot-long shadow what is the height of the tree

**math**

the bulletin board in Shain's classroom is 3 1/4 feet by 4 1/2 feet. what is the area of the bulletin board? is this right? 24 1/2 ?

**Math**

Felisa will carpet her rectangular living room shown below. The carpet she selected is sold by the square yard, at a cost of $32 per square yard. To the nearest dollar, how much will it cost to carpet the living room?

**math**

you want to use a square section of your yard for a garden. You have at most 52 feet of fencing to surround the garden. write and solve an inequality to represent the possible lengths of each side of the garden. Math - Dylan, Tuesday, March

**math**

Jude's kayak is 10 feet and 2 inches long. Alexa's kayak is 29 inches longer. How long is Alexa's kayak?

**Math**

You have $80 and your brother has $275 dollars. You save $10 of your allowance each week. Your brother spends his allowance plus $15 each week. A. Write an equation to model this. B. How long before you have as much money as your brother? C. How much have you saved when you ...

**Grade 7 math**

Bob currently has $1,000 in a saving account he saves $25 per month he saves the same amount each month and does not take any money out of the account and how many months will boris have 1,450

**Math**

The most Gabriel has ever earned delivering newspapers is $43 in one day. Write an inequality showing the amount Gabriel earns delivering newspapers.

**Math**

How many cubes with 1/4-foot side lengths will fit inside 77ft3 if they are packed with no gaps

**Math**

Hello everyone. I have a math problem that I need a bit of help with please. Ava wants to ride the Rip Ride Rocket roller coaster at Universal Studios. She knows that she has to be at least 40 inches tall. If h represents the height of the children that CANNOT ride the coaster...

**math**

Name the angle that is supplementary to <COD a.<COA B.<BOC C.<COB D.<BOA

**Math**

How many cubes with 1/4-inch side lengths will fit in a 87 1/2 if they are packed with no gaps?

**math**

name the angle that is supplementary to <COB

**math**

the sex of

**math**

find the measures of the complement and the supplement of an angle with measure 50 degrees

**math**

3. The measure of angle A is 73 classify the angle as acute right obtuse or straight (1 point)

**math**

if one sixth of a number is added to one eighth of the same number, the result is 35. find the number?

**math help asap**

For the data in the table does y vary directly with x? if it does write an equation for the dorect variation. x;y 10,15 16,24 20,30 a:yes; y=1.5x b:yes;y=2x c:yes;y=x+5 d: y does not vary directly with x if you are from connections and know any other answers/know to help with ...

**math**

Make a conjecture and give a general term for this pattern

**Math. Fair race project help!**

Animal one: coyote Max speed: 43 mph Anime two: elk Man speed: 45 mph Rough draft: d= distance in miles T= time in hours. Coyote: d=43t Elk: d= 45t Final draft: Animal ones fair race equation:? Animal two fair race equation:? Please help!

**Math**

a net for each three dimensional figure would always have six congruent rectangular regions A. triangular prism b. rectangular pyramid c. hexagonal pyramid d. hexagonal prism

**Math**

Find two numbers a and b whose sum a+b is -1 and whose difference a−b is 5. I do not understand the question

**Math word problem**

The admission fee at an amusement park is $ 1.50 for children and $ 4.00 for adults. On a certain day, 258 people entered the park, and the admission fees collected totaled $712 . How many children and how many adults were admitted? I tried doing it this way; x = amount of ...

**math**

3.A rectangular prism has a width of 92ft and a volume of 240ft.Find the volume of a similar prism with a width of 23ft.Round to the nearest tenth, if necessary. 4.A pyramid a height of 5in. and a surface area of 90in^2.Find the surface area of a similar pyramid with a height ...

**Math**

The product of (4z2 + 7z – 8) and (–z + 3) is –4z3 + xz2 + yz – 24. What is the value of x? What is the value of y?

**Math**

Lilla read 1/5 of her book last week. This week she read 3 times as much as she read last week. Write an expression to show how much of her book she has left to read. Then simplify the expression.

**Math**

Pawan is twice as old as ruby . 3years ago he was 3 times as old as ruby .how old is pawan now

**Math**

Just need help to start this problem. Given f(x)=x^3+3x+1 is one to one. Without actually determining the inverse function f^-1, compute the following (show and discuss your work. f^-1(-3)

**math**

a man bought 360 eggs at rs 12 per dozen. 60 eggs were broken and 30 were rotten. find his profit and loss percent . if he sells the rest of the eggs at rs 15 per dozen.

**Math**

Country A has a population of 102.4 million people and total land area of about 150.7 thousand square miles. What is the population density (the # of people per square mile?

**Math**

Construct an isosceles triangle PQR in which PQ = PR, base QR = 5.6 centimetres, angle PQR = 75 degrees using a ruler and a pair of compasses. Draw its lines/line of symmetry.

**math**

Of the following fractions: 9/19, 5/11, 7/15, and 11/23, which is the largest?

**Math**

What is compatible numbers and how do you find compatible numbers?

**Math**

Which quadrilaterals appear to have 4 sides of equal length

**Math**

10 animals 36 legs How many have 2 How many have 4 10X2 =20 36-20 = 16 Is that right?

**Math**

A sixth number will be added to the list. What must it be in order for the mean to be 12? (Use algebraic equation to help)