Friday
February 24, 2017

Homework Help: Math

Branches of Math

Recent Math Questions

Math
Given that the measurement is in centimeters of the circle to the nearest tenth (Use 3.14 for r)
Wednesday, February 15, 2017 by Joshua

4th grade math
Eric had 10 cookies. He gave 1/2 to Jeff. he also gave 1/5 of cookies to Mike. How many cookies does each boy have? Jeff: 10 x 1/2 = 5 Mike: 10 * 1/5 = 2 Eric = 10-(5+2)= 3
Wednesday, February 15, 2017 by Jared

math
Let f of x equals 4 for x less than or equal to 3 and equals the quantity 7 minus x for x greater than 3. Use geometric formulas to evaluate the integral from x equals 1 to x equals 7 of f of x, dx. I got 16 but i dont think it is right.
Wednesday, February 15, 2017 by Anonymous

Business Math
a) Given x + y = 2 and y = x² - x - 2, find the x-intercepts and y-intercept of the parabola. b) Find the turning point of the parabola. c) Find the x intercept and y intercept of the line graph. d) Find the point(s) of intersection of the line graph and the parabola. e) ...
Wednesday, February 15, 2017 by Lassen

Business Math
a) You have N$ 10,000 to invest, which you want to grow to N$ 100,000. If the bank offers you an interest rate of 6% p.a. compounded monthly, how long must you invest the money for (in months or years)? Round your answer to one decimal place. b) Instead of investing N$ 10,000...
Wednesday, February 15, 2017 by Lassen

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 ...
Wednesday, February 15, 2017 by Lassen

Business Math
a) Solve for x: 2x² + 5x = 3 b) Solve for x and y: x + y = 4 and x² + y² + xy - 12 =0 c) Solve for x: 8 2x + 3 = ½x² d) Factorise: 6x² - 7xy - 3y² e) Factorise: 4x³ + 5x²y - 4xy² - 5y³
Wednesday, February 15, 2017 by Lassen

Business Math
Craig runs a business importing shoes from Italy and selling them in Namibia. For the below questions (a – g), rounds your answers to cents (two decimal places). a) If the Euro / Namibian dollar exchange rate is € 1 = N$ 13.90 and the cost price of a pair of shoes is € ...
Wednesday, February 15, 2017 by Lassen

Business Math
William has been contracted to paint a school classroom. The classroom is 20 m long, 15 m wide and 5 m high. There are four windows (2m by 3m) and a door (2m by 1m). a) What is the cost of painting the ceiling at N$ 6.50 /m²? b) What is the cost of painting the walls (...
Wednesday, February 15, 2017 by Lassen

Business Math
a) A company issued 150,000 shares to three investors in the ratio of 2:3:5. How many shares does each investor own? b) If the company declares a dividend of 35 cents per share, how much (in N$) will each investor receive?
Wednesday, February 15, 2017 by Lassen

Business Math
Determine the following (convert to a mixed number where relevant). a) 20 + 10 × (-½) ÷ 5 b) 16 ÷ (3 + 5) × -1 + 2³ c) ½ + ⅓ + ⅜ d) 3⅝ + 4 × -2 e) -1 × -1 ÷ -2 + 3 + 2°
Wednesday, February 15, 2017 by Lassen

Business Math
Martha earns a gross salary of N$ 40,000 per month. The following deductions come off her gross salary: income tax 28%, pension fund 10%, medical aid fund 5%. a) How much (in N$) does Martha pay in income tax? b) How much (in N$) does Martha contribute to her pension fund? c) ...
Wednesday, February 15, 2017 by Lassen

math
log(u^2÷v) ^3
Wednesday, February 15, 2017 by jess

Math
ABCD is cyclic quadrilateral and AB =CD then prove that AC=BD
Wednesday, February 15, 2017 by Hego

Math
I need help not sure if I'm doing this correctly. Parts of parts: Find each of the following parts of parts without drawing a diagram for each problem explained clearly A) 2/3 of 2/7 I think it's 4/15 because your multiplying. B) 6/11 × 2/7 I think it's 12/77 your multiplying...
Wednesday, February 15, 2017 by Jessica

Math
I need to know if I'm answering this correctly. How can you figure out the size of a of a part without having to draw a diagram? consider example of 2/3 × 4/5. A) describe how you could draw a diagram to me this calculation. I would do 5 vertical lines And 3 diagnosis lines. ...
Wednesday, February 15, 2017 by Jessica

Math
An investment is initially worth $11,100. Write a formula for the function V(t) representing the value of this investment after t years in each of the following situations: A) The value decreases by $889 per year. B) The value increases by $899 per year.
Wednesday, February 15, 2017 by Laura

math 103
find a possible equation for a line that is perpendicular to the graph of 5x-3y=15 if the two lines intersect at x=15
Wednesday, February 15, 2017 by liana

Math
The 112th Congress of the United States of America has 535 members, of which 87 are women. An alien lands near the US Capital and treats members of Congress as a random sample of the human race. He reports to his superiors the 95% confidence interval for the proportion of the ...
Tuesday, February 14, 2017 by N

Math
You shoot a rifle at an angle of 42 degrees. The bullet leaves your rifle at a height of 6 feet and a speed of 810 feet per second. So I used the equation h(t)=6+(810 sin42)t-16t^2 to calculate that the bullet will hit the ground after 33.88580 seconds. Now how do I calculate ...
Tuesday, February 14, 2017 by Anonymous

Help math
find 2 exponential functions with asymptote of y=80 , with points (0,176) (1,169) (3,156) (5,146) (20,101) (30,90) (60,81).one should have the base of "e"
Tuesday, February 14, 2017 by Kevin

Math
Know if 28 and 3 if the first number is multiple of the second
Tuesday, February 14, 2017 by Erika

math
Identify two regular and two irregular polygons in your home or community. How do you know they are regular or irregular? Give one example of each regular and irregular polygon that you noticed in your home or community. Do you think regular or irregular polygons are used more...
Tuesday, February 14, 2017 by Plz Help, PLZ?

math
A farmer has enough food to last his 40 cattle 35 days. If he buys 50 cattle, how long can the same feed can last? Let X be the number of days the same feed can last
Tuesday, February 14, 2017 by Anonymous

math
the width of a math textbook is 0.75 inches. How many math textbooks can be placed standing up on a shelf that is 18inches wide
Tuesday, February 14, 2017 by arunodroe sneha

Math-Statistics
CAN SOMEONE HELP ME WITH THIS? A recent study found that, of the 1771 participants aged 12 to 19 in the National Health and Nutrition Examination Survey, 19.5% had some hearing loss (defined as a loss of 15 decibels in at least one ear). This is a dramatic increase from a ...
Tuesday, February 14, 2017 by Kate

Math
If a drawing is scaled 1/8 inch to the foot, what is the actual length, in feet, represented by 3 1/2 inches on the drawing?
Tuesday, February 14, 2017 by Tammi

Math
Tell how many terms this expression has : 4c+7 1/2 I don't know how to do this will you please help
Tuesday, February 14, 2017 by Haily

math
40% of 101?
Tuesday, February 14, 2017 by lei

math
A college student takes a standardized test and scores a 163. If the mean is 155 and the standard deviation is 7, what is the student’s percentile rank? (Assume a normal distribution.)
Tuesday, February 14, 2017 by mary

Math
Using this formula... E=10^(1.5m+11.4) How much more energy is released in an M = 8.3 earthquake than in an average quake of magnitude M = 6.2? (Round your answer to the nearest integer.)
Tuesday, February 14, 2017 by Tyler

Math
Emma is going camping.Each side triangle on her tent is5 feet tall.The square base 4feet wide.What is the surface area of her tent
Tuesday, February 14, 2017 by Nestor

Math
What is the amount of sales tax owed on a $39 jacket if the tax rate is 5%? $1.85 $1.90 $(1.95) $195.00 A flower arrangement was marked down 12.5%. If the flowers originally cost $20, what is the amount of the discount? $2.40 $(2.50) $2.05 $17.50 Find the amount of tip on a $...
Tuesday, February 14, 2017 by Help I need somebody not just anybody

Math
Anna planted peas in 3/8 of her garden and herbs in 1/8 of it. She divides the rest of the garden into 6 sections. What fraction of the original garden is each section?
Tuesday, February 14, 2017 by Christopher

math
Translate the sentence into an inequality. Twice the difference of a number and 4 is at most 21
Tuesday, February 14, 2017 by chrsitna

math
Translate the sentence into an inequality. Six subtracted from the product of 2 and a number is at least 18 Use the variable y for the unknown number.
Tuesday, February 14, 2017 by chrsitna

Math Calc
John was wondering at what speed an arrow leaves a bow when it is released. So he went to a field and shot the bow at an angle of 45 degrees. The arrow hit the ground at a distance of 600 feet. Ignore air resistance. For simplicity, assume that the arrow is released at an ...
Tuesday, February 14, 2017 by Anonymous

Math - Calculus
The horizontal velocity is constant. (Ignore air resistance.) Recall from your study of trigonometry that if you release a rock at a speed v in a direction that makes an angle α with the horizontal, then the initial vertical velocity vv and the horizontal velocity vh are ...
Tuesday, February 14, 2017 by Jamie

Math
2. Write the set described below in the set-builder notation: S is the set of real numbers that are less than 15 A. o<s<15 B. {s|s<15} C. {s|s≤15} D. {s|-15<s<15} I'm Not sure how do this one, can someone help?
Tuesday, February 14, 2017 by EmberShy

Math
1. Write the set in roster form: N is the set of real numbers that are factors of 12. A. {2,4,6} B. {1,2,3,4,6} C. {1,2,3,4,6,8,12} D. {1,2,3,4,6,12}***
Tuesday, February 14, 2017 by EmberShy

Math 115
Create a piecewise function of the following scenario where D(t) is the total distance walked (in miles) as a function of time t (in minutes): “You begin a walk from your home at a fast pace of 6 miles per hour for 30 minutes. You rest for 10 minutes, and then you continue ...
Tuesday, February 14, 2017 by Holie

Math
lucky drew an isosceles triangle as shown if the measures of XYZ is 25 what is the measure of XYZ
Tuesday, February 14, 2017 by Alyssa

tecca math
what is greater than 7/8
Tuesday, February 14, 2017 by Musab issak

Math
a u.s based motorcycle manufacturer says that it expects to build 149,000 motorcycles tbis year, up from 137,000 last year. find the percent of increase in production Would it be 8.75 percent increase? I took 149,000-137,000/137,000 and I got .08759124 and converted it to 8.75...
Tuesday, February 14, 2017 by Katie

Math
The clock is at 2:30 now its at 2:45 what fraction of a turn did the minute hand move
Tuesday, February 14, 2017 by Pete Ortiz

Math
Find k so that (x-2) is a factor of x³+kx-4? Kindly help me this one
Tuesday, February 14, 2017 by Anonymous

math
A train starting at 11 am travels east at 45 km / hr while another starting at 12 noon from the same point trivels south at 60 km / hr . how fast the train separating at 3 p. m
Tuesday, February 14, 2017 by Anonymous

Math
The total length of 4 blue banner and 5 yellow banner is 49 m. The total length of 2 blue banner and 1 yellow banner is 17 m. All banner of the same colour have the same length. Find the length of a blue banner
Tuesday, February 14, 2017 by Anonymous

Math 115
Create a piecewise function of the following scenario where D(t) is the total distance walked (in miles) as a function of time t (in minutes): You begin a walk from your home at a fast pace of 6 miles per hour for 30 minutes. You rest for 10 minutes, and then you continue ...
Tuesday, February 14, 2017 by Julie Potterson UCSC

4th grade math
roxy spends 1/5 hour cleaning the table 3/10 hours washing dishes, and 4/5 hour reading a book. How many hours does she spend doing all these activities?
Tuesday, February 14, 2017 by ita

math
Abel bought 3 similar shirts and 4 similar jackets for $360. Marcus bought 1 such shirt and 3 such jackets for $220. Find the cost of each shirt.
Tuesday, February 14, 2017 by jazel

Math 115
A department store is offering a coupon for 21% off for any purchases over $100. How much would you spend for a $100 purchase? You would spend $100. You would spend $79 on a purchase of $100.01 You would spend $79.8 on a purchase of $101.00 You would spend $87.69 on a purchase...
Tuesday, February 14, 2017 by nicky

math
karyn purchased a square picture frame. each side measures 1 1/4 feet. what is the area of the picture frame in square feet?
Tuesday, February 14, 2017 by lyric

Math
Write an expression using an exponent to represent the area of a square with the side length of 13 inches
Tuesday, February 14, 2017 by Jovi

math
A cheese pizza costs $5. Additional toppings cost $1.50 each. Write and graph an equation in two variables that represents the total cost of a pizza. Let tt represent the number of toppings and cc represent the total cost of the pizza.
Monday, February 13, 2017 by kile

Math
A recipe calls for 2/3 cup of sugar for every 4 teaspoons of vanilla. What is the unit rate in teaspoons per cup? Explain your answer.
Monday, February 13, 2017 by Help

math
Monica paid sales tax of $1.80 when she bought a new bike helmet. If the sales tax rate was 9%, how much did the store charge for the bike helmet before tax?
Monday, February 13, 2017 by jahshai

Math! Please help!
This is an inequality problem/question. I dont know if I'm right in solving this problem: 15 ≤-k/4-9 (k/4 is a fraction) Please help! I got 5.25 ≤k
Monday, February 13, 2017 by Amy

Math
0.375×100
Monday, February 13, 2017 by Violet

Math
In its monthly report, the local animal shelter states that it currently has 24 dogs and 18 cats available for adoption. 8 of the dogs and 6 of the cats are male. If two animals are selected at random, what is the probability that both are female cats?
Monday, February 13, 2017 by Priya

Math
-3(5x-3)-5=
Monday, February 13, 2017 by Jenny

math
If f(x) is an even function and passes through the point (5, 3), what other point must lie on the graph of the function? Explain your reasoning.
Monday, February 13, 2017 by Anonymous

Math
. The volume of a rectangular box is given by the expression V = (120 − 6w)w2, where w is measured in inches. a. What is a reasonable domain for the function in this situation? Express the domain as an inequality, in interval notation, and in set notation. b. Sketch a graph ...
Monday, February 13, 2017 by Anonymous

Math
-6x+4(-5x-4)=
Monday, February 13, 2017 by Jenny

Math
If log c = -399.699, give the value of c in scientific notation without using any calculator. Show your work. hint: the value of c is small but it does not equal to zero
Monday, February 13, 2017 by Larin

Math
2(-3x+3)+3x= The answer are A -3x+3 B -3x+6 C -3x+9 D 6
Monday, February 13, 2017 by Jenny

Math
Tickets to a local movie were sold at $7.00 for adults and $5.50 for students.there were 220 tickets sold for a total of $1,390.00.
Monday, February 13, 2017 by Dara

Math/pre-algebra
A scale drawing has a scale of 1/4in.:6ft. Find the length on the drawing for each actual length. 12. 18ft 13. 66ft 14. 204ft
Monday, February 13, 2017 by Kiana

Math
The circumference is 3 inches and the length of tube is 16 inches. The string is wrapped around symmetrically around the tube. What is the length of the string?
Monday, February 13, 2017 by Chloe

Math
Says to write a variable expression. An auto repair bill is $220 for parts and $45 for each hour of labor. If h is the number of hours of labor, express the amount of the repair bill in terms of the number of hours of labor. Please help I really don't understand this.
Monday, February 13, 2017 by Connor

math
andy counted his steps as he walked halfway around the school. he counted 654 steps. about how many steps is it around the school?
Monday, February 13, 2017 by peter nick

Math
A wire 32 cm long is cut into two pieces. The longer piece is 6 cm longer than the shorter piece. What is the length of the shorter piece?
Monday, February 13, 2017 by Angii

math
A spinner has three congruent sections labeled 1, 2, and 3. On the first two spins, the arrow stops on 1 and then 2. What is the probability that on the third spin the arrow will stop on 3? A.1 B.2/3 C.1/3 D.0
Monday, February 13, 2017 by joelsttn

Math and Please Help!
Jade is painting a rectangular wall. The wall is 4 1/4 yd long and 2 2/3 yd high. The formula for the area of a rectangle is A=bh. What is the area of the wall? I think the answer is 11 and one thirds.
Monday, February 13, 2017 by JT

math
if the sum of interior angel of a regular polygon is 30 degree right angel .how many sides has it?
Monday, February 13, 2017 by Godsent miracle

Math-Geometry
For coordinates A(1,-4) B(5,-1) C(8,-5) D(4,-8) Prove ABCD is a rectangle through the use of a coordinate paragraph.
Monday, February 13, 2017 by Monica

Math
1. Identify the decimal And simplified fractional form of 60%. A. 0.6 and 4/5 B. (0.6 and 3/5) C. 0.06 and 3/5 D. 0.06 and 6/10 2.A baseball team wins 45% of its games. What fraction of games does it win? A. 8/20 B. 9/25 C. (9/20) D. 8/25 3. According to a survey taken at an ...
Monday, February 13, 2017 by Help I need somebody not just anybody

math
the volume of a right rectangular prism is 36 cubic units. list at least 3 possible lengths widths and heights that this shape could have
Monday, February 13, 2017 by dylan

Math
Chad buys peanuts in 2-pound bags. He repackages the into bags the hold 5/6 pound of peanuts. How many 2-pound bags of peanuts should chad buy so that he can fill the 5/6-pound bags without having any peanuts left over?
Monday, February 13, 2017 by Emma

Math
How many three-digit counting numbers are exactly divisible by 6 but not also exactly divisible by 9?
Monday, February 13, 2017 by Bobby

math
an ave-sized dog weighs about
Monday, February 13, 2017 by komi

math
A skydiver jumps from an airplane at an altitude of 2,500 ft. He falls under the force of gravity until he opens his parachute at an altitude of 1,000 ft. Approximately how long does the jumper fall before he opens his chute? h(t) = -16t2 + vt + h0 A. 2.4 s B. 9.7 s C. 12.5 s ...
Monday, February 13, 2017 by Anonymous

math
3(x+4)-5= n is 9
Monday, February 13, 2017 by olga

Math
if the union member is able to invest their $12,000 is a fund that pays 1.8% compounded continuously, in how many years will the future values be worth $20,000?
Monday, February 13, 2017 by DJ

099 math
2(2x-7)-16=3(-x-7)-11
Monday, February 13, 2017 by Tim

Math
Joe was driving at a rate of 60 mph. As he approached a curve in the road, his speed was 51 mph. What was the % change in Joe's speed?
Monday, February 13, 2017 by Shirley

099 math
-2(-x-5)+1=5
Monday, February 13, 2017 by Tim

Math
Two fire wardens are stationed at locations A and B, which are 50 km apart. Each warden sights the forest fire at C. Given that angle CAB is 52 degrees and CBA is 43.0, find the distance from C to the nearer warden, to the nearest 0.1 km
Monday, February 13, 2017 by Lisa

math
write a ratio and percent for the shaded area. total of 20 squares 6 shaded squares A. 6/25 30% B. 3/50 6% C.6/25 24% D.3/10 30%
Monday, February 13, 2017 by kenzie

math
a gumball machine contains orange yellow and purple gumballs the probability of getting an orange gumball is 3/4 the probability of getting a yellow gumball is 1/6 if there are 36 gumballs in the machine how many are purple?
Monday, February 13, 2017 by sky

Math
Can someone please help me understand box-and-whisker plots? I get really confused on what each thing is and how to plot it. Thanks.
Monday, February 13, 2017 by Anonymous

Math Ms. Sue please help!
How do you know if a radical expression is in simplest form?
Monday, February 13, 2017 by Olivia N J

math
The table shows the results of drawing one marble from a bag of colored marbles. Each marble was replaced after the outcome was recorded. If there are a total of 50 marbles in the bag, about how many of the marbles are black? A.15 B.6 C.12 D.9
Monday, February 13, 2017 by joelsttn

Math
Mr. Letterman has an unlimited amount of 5-cent stamps and 7-cent stamps. What is the largest amount of postage that he cannot make?
Monday, February 13, 2017 by Shanee

math
Iam not able to get this one.sides of a rectangular plot of land are measured correct to nearest metre.measurement s given as 20m by 3m.so what is upper bound of the plot length?,the least possible perimeter of the plot?
Monday, February 13, 2017 by Nthabeleng

Math
What is the area of a rhombus with: Side=8 cm Acute angle between one pair of sides=30 degrees Please don't use trigonometry as I'm in Class 7. Thanks in advance.
Monday, February 13, 2017 by Aastha

Math 115
Consider the amount of gas in your car during a road trip. You start out with 45 gallons and drive for 4 hours, leaving you with 27 gallons in the tank. You stop for lunch for 2 hours and then drive for 2 more hours, leaving you with 18 gallons. t= time C (t)=_____ if 0 </ ...
Monday, February 13, 2017 by dayna

Math 115
Create a piecewise function of the following scenario where D(t) is the total distance walked (in miles) as a function of time t (in minutes): “You begin a walk from your home at a fast pace of 6 miles per hour for 30 minutes. You rest for 10 minutes, and then you continue ...
Monday, February 13, 2017 by Janiel

math
(a) Make a table of values rounded to two decimal places for the function f(x) = ex for x = 4, 4.5, 5, 5.5, and 6. Then use the table to answer parts (b) and (c). (b) Find the average rate of change of f(x) between x = 4 and x = 6. (Round your answer to two decimal places.)
Monday, February 13, 2017 by katy

math
What would be a person target heart rate be if they are 14 years old? I know it starts like 220-14=206 but then what... Please help
Monday, February 13, 2017 by kacy

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