# Math

## Recent Questions

**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

**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

**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 ...

**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?

**Math**

Tell how many terms this expression has : 4c+7 1/2 I don't know how to do this will you please help

**math**

40% of 101?

**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.)

**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.)

**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

**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 $...

**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?

**math**

Translate the sentence into an inequality. Twice the difference of a number and 4 is at most 21

**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.

**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 ...

**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 ...

**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?

**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}***

**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 ...

**Math**

lucky drew an isosceles triangle as shown if the measures of XYZ is 25 what is the measure of XYZ

**tecca math**

what is greater than 7/8

**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...

**Math**

The clock is at 2:30 now its at 2:45 what fraction of a turn did the minute hand move

**Math**

Find k so that (x-2) is a factor of x³+kx-4? Kindly help me this one

**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

**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

**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 ...

**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?

**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.

**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...

**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?

**Math**

Write an expression using an exponent to represent the area of a square with the side length of 13 inches

**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.

**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.

**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?

**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

**Math**

0.375×100

**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?

**Math**

-3(5x-3)-5=

**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.

**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 ...

**Math**

-6x+4(-5x-4)=

**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

**Math**

2(-3x+3)+3x= The answer are A -3x+3 B -3x+6 C -3x+9 D 6

**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.

**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

**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?

**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.

**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?

**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?

**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

**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.

**math**

if the sum of interior angel of a regular polygon is 30 degree right angel .how many sides has it?

**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.

**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 ...

**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

**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?

**Math**

How many three-digit counting numbers are exactly divisible by 6 but not also exactly divisible by 9?

**math**

an ave-sized dog weighs about

**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 ...

**math**

3(x+4)-5= n is 9

**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?

**099 math**

2(2x-7)-16=3(-x-7)-11

**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?

**099 math**

-2(-x-5)+1=5

**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

**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%

**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?

**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.

**Math Ms. Sue please help!**

How do you know if a radical expression is in simplest form?

**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

**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?

**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?

**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.

**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 </ ...

**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 ...

**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.)

**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

**math**

R\left(t\right)=4t^2-3tR(t)=4t2−3t represents the rate of an object over the interval [5, 30]. What is the average rate of the object over the time interval?

**math**

t (seconds) 1 3 4 7 v(t) (meters/second) 20 32 42 52 The table shows the velocity (in meters per second) for an object over the interval [1.7]. Estimate \int^7_1v\left(t\right)dt∫17v(t)dt using 3 subintervals and the Left Hand Riemann Sum.

**math**

Estimate the value of \int^7_4\left(1+x^2\right)\sin x\:dx, make sure that your answer has 3 decimal places.

**math**

v\left(t\right)=5-tv(t)=5−t represents the velocity of an object over the interval [0, 7] in meters per second. What is the total distance traveled of the object over the time interval?

**math**

v\left(t\right)=5-tv(t)=5−t represents the velocity of an object over the interval [0, 7] in meters per second. What is the displacement of the object over the time interval?

**math**

The diameter and the slant height of a cone are both 24 cm. Find the radius of the largest sphere that can be placed inside the cone. (The sphere is therefore tangent to the base of the cone.) The sphere occupies a certain percentage of the cone’s volume. First estimate this...

**math**

There is a unique parabola that goes through the points P = ( 1, 1), Q = (1, 1), and R=(5,6) that can be described by y=ax^2 +bx+c. Find coefficients a, b, and c.

**Math**

From the top of a Cliff 90metre high, the angle of depression of a boat on the sea is 26.2 degree.calculate how far the boat is from the from the foot of the cliff and from the top of the cliff

**college math**

two cars are approaching an intersection one is 3 miles south of the intersection and is moving at a constant speed of 20 miles per hour. at the same time the other car is 4 miles east of the intersection and is moving at the constant speed of 30 miles per hour. a)express the ...

**Math; Calculus**

You toss a rock up vertically at an initial speed of 55 feet per second and release it at an initial height of 6 feet. The rock will remain in the air for_______ seconds. It will reach a maximum height of_______ feet after ________ seconds.

**math**

a store is going to mark up the cost that was purchased for $36.28 by 30%. What will the coat cost the costumer?

**math**

Amber has a piece of licorie that is 10 feet long. She cuts it into three pieces for her friends. The 1st piece is 4.25 feet longer than the second piece. The 3rd piece is 2.24 feet longer than the second. How long is the 3rd piece?

**math**

four times a number minus 8 is equal to two times the number plus 12

**math**

Zach's rope is 15 feet long. He cuts it into three pieces. 1st piece is 3.57 ft longer than the 2nd piece. 3rd piece is 2.97 feet longer than the 2nd piece. How long is third piece?

**Math**

Prove 3(x+1)(x+7)-(2x+5)² is never positive So, 3(x+1)(x+7)-(2x+5)(2x+5) =3(x²+8x+7)-(4x²+20x+25) =3x²+24x+21-4x²-20x-25 =-x²+4x-4

**math algebra**

Sum the following term of progression to the last term, logx, logx^2 logx^3.... logx^120

**math**

8 kilometer is how many meters

**college math**

a rectangular dog pen is to be constructed so that one side is against an existing stone wall and the other three sides are to be fenced. of 500 feet of fence is to be used, determine the dimensions and area of the pen with maximum area. I have no idea how to solve this problem.

**math**

(19) Does the following system of equations have a solution? If it does, find one; if not, explain why not. √ x + √ y = 1 r 4x 9 − r 25y 64 = 1

**math**

Alex invested money in two accounts, and after one year, one of them had earned 13% interest and the other 9%. He had $700 more invested in the lower interest account and earned a total of 239 in interest after one year. How much did Alex invest in each account? answer is 800 ...

**math**

Ann has $300 in a savings account that earns 1.75% simple annual interest. in how many years will she have$21 in Interest?

**math**

find the maximum and/or minimum values of the function f(x) for the indicated value of x f(x)=x^2 -4x+3 2<_ x _>5

**Math**

The sum of two numbers is 9.twice their product gives 40.find the numbers. One number exceeds another by 4.the sum of their square is 208. What are the numbers. The area of a rectangular field is 108square .the perimeter is 42. Find the length.