Shin

Hooke's Law the table shows the distance D that a spring stretches when a weight W is hung on it. W (pounds 2 6 9 15 D (inches) 1.6 4.8 7.2 12 (a.) Do the data represent direct or inverse variation? Explain. (b.) Find an equation that models the data. (c....

14 years ago

Braking distance The braking distance y in feetthat it takes for a car to stop on wet ,level pavement can be estimated by y = 1/9 x^2, where the x is the speed of the car in miles per hour Find the speed associated with with each braking distance. (a.) 25...

14 years ago

Highwq curves. If a circular curve without any banking has a radius of R feet, the speed limit L in miles per hour is L = 1.5 aqrt(R) (a) Find the speed limit for a curve having a radius of 400 feet. (b). If the radius of a curve doubles, what happens to...

14 years ago

Got a question that I'm not quite sure how to approach: "A force of 2500 N acting on the area of 120cm3 evokes a pressure of:" This is all the info given in the question.

13 years ago

A roller coaster works by gravitational energy. The coaster car is pulled up to a high point and then released, rolling downwards on the track through all manners of curves and loops. I have a short roller coaster car that I pull up to the top of a hill o...

12 years ago

A lottery ball drawing machine has 50 balls, each labeled with a distinct integer from 1 to 50. Every Sunday, four different balls are drawn to determine the winning numbers. You have last Sunday's ticket with the numbers {3,7,12,15}. You missed the drawi...

12 years ago

If f(x) is a polynomial with real coefficients such that f(7+5i) = 39 + 13i, then f(7−5i) = a + bi. What is the value of a+b?

12 years ago

An upscale clothing boutique charges $300 for a brand name pair of jeans, which is 50% more than the amount it costs the store to buy one pair of these jeans. As a benefit of working there, employees can purchase the pair of jeans at 30% off the store's c...

12 years ago

5 distinct positive reals form an arithmetic progression. The 1st, 2nd and 5th term form a geometric progression. If the product of these 5 numbers is 124 4/9, what is the product of the 3 terms of the geometric progression? Note: The phase "form an arith...

12 years ago

One root of the quadratic equation x^2 − 2x + m = 0 is 9. If the other root is n, what is n−m?

12 years ago

f(x)=x^4+ax^3+bx^2+cx+d and has real coefficients. If two of the roots are 4−i and 2+3i, what is the value of a+b+c+d?

12 years ago

The quadratic equation x^2−9x+10=0 has roots tanα and tanβ, where 0∘<α+β<180∘. What is the measure of α+β (in degrees)?

12 years ago

For real numbers a and b, if f(x)=x^2−ax+b satisfies f(5+7i)=2a, what is the product of the two roots of the equation f(x)=0?

12 years ago

If the ratio of the roots of the quadratic equation x^2−28x+A=0 is 2:5, what is the product of the roots of the quadratic equation x^2+Ax+2A+3=0?

12 years ago

Let a and b be the maximum and minimum value of x, respectively, satisfying the inequality |x+19|+|x−22|≤137, then what is a−b?

12 years ago

There are four complex fourth roots to the number 4−4√3i. These can be expressed in polar form as z1=r1(cosθ1+isinθ1) z2=r2(cosθ2+isinθ2) z3=r3(cosθ3+isinθ3) z4=r4(cosθ4+isinθ4), where ri is a real number and 0∘≤θi<360∘. What is the value of θ1+θ2+θ3+θ4 (...

12 years ago

Given that sin(2θ)=2/3, the value of sin^6θ+cos^6θ can be written as a/b with a and b as coprime positive integers. Find a+b.

12 years ago

Sixty men working on a construction job have done 1/3 of the work in 18 days. The project is behind schedule and must be accomplished in the next twelve days. How many more workers need to be hired?

12 years ago

Triangle ABC has side lengths AB=8, BC=12 and CA=14. Given that D, E and F are midpoints of BC, CA and AB, respectively. Find the value of AD^2+BE^2+CF^2.

12 years ago

Consider the helix parametrized with the vector equation r(t)=cos t i+ sin t j + t k. The length L of the helix between the points (1,0,0) and (1,0,6π) is equal to aπ. What is the value of a^2?

12 years ago

Three ships — the Nina, the Pinta, and the Santa Maria — are setting sail from Spain on a mission to find the shortest route to the West Indies. The year is 1492 and Columbus is about to sail the ocean blue... "NO! It can't be so!" shouted Captain Devious...

12 years ago

40 students attended the brilliant summer camp at Stanford University. "k" of the students at the camp are working on math problems and the others are working on non-math problems. One of the camp mentors noticed that whenever all the students were partit...

12 years ago

1. At what point does the graph of f(x)=3x-12 crosses the x-axis? 2.At what point does the graph of f(x)=5x+1 crosses the y-axis?

11 years ago

The cost of a pizza varies directly as the square of its radius. If a pizza with a 6-inch radius costs ₱148.00, how much should a pizza with an 11-inch radius cost?

11 years ago

Shun started driving south-west for 450 meters then turned south south for 500 meter and stopped. Find Shun's displacement

8 years ago

A 50-Newton box lays on a plane inclined 20degrees from the ground. Though the weight of the box is directed downwards, we know that some component of it is responsible why the box would slide. Find the value of this component

8 years ago

On an unwanted weather situation, rescue operators fly a helicopter that is aimed to travel 100 knots due southwest. However, two winds coming from different directions move it sideways. One wind is making it move sideways 20 knots northward while the oth...

8 years ago

Thank you drwls :)

13 years ago

thanks a lot steve

12 years ago

Thanks, but how do I find the value of x?

12 years ago

Thanks MathMate :)

12 years ago

120 or 180? :)

12 years ago

Thanks :)

12 years ago

Can you show me the solution and result please?

12 years ago

The difference of the absolute value is not positive because all yall trash and suck phht loser can't do math Lmao

6 years ago

XDXDXDXDXDDXDXDXDXDDXD TROLL WEB

6 years ago

MINECRAFT XD

6 years ago

A poet wrote 2 poems on the first month, 5 on the second month, 8 on the third month. If the pattern continues how many poems did the poet make in a year?

4 years ago