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Questions (43)

A person only reads character when 25cm from her eyes. Calculate the dioptric power of a lens she need so that the characters
1. 0 answers
2. 410 views
On an unwanted weather situation, rescue operators fly a helicopter that is aimed to travel 100 knots due southwest. However,
1. 3 answers
2. 607 views
A 50-Newton box lays on a plane inclined 20degrees from the ground. Though the weight of the box is directed downwards, we know
1. 1 answer
2. 456 views
Shun started driving south-west for 450 meters then turned south south for 500 meter and stopped. Find Shun's displacement
1. 1 answer
2. 442 views
A plane flying in a straight line at constant altitude of 2000 m above the ground with a speed of 200m/s drops an object.
1. 0 answers
2. 583 views
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
1. 1 answer
2. 4,743 views
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?
1. 1 answer
2. 440 views
40 students attended the brilliant summer camp at Stanford University. "k" of the students at the camp are working on math
1. 2 answers
2. 733 views
Let z be a complex number such that z = 2(cos 8∘ + i cos 82∘).Then z^5 can be expressed as r(sin α∘+ i cos α∘), where
1. 0 answers
2. 1,247 views
θ is an acute angle such that tan(θ)=1/4. What is the value of 17√17*(sinθ+cosθ)?
1. 1 answer
2. 456 views
5 distinct positive reals form an arithmetic progression. The 1st, 2nd and 5th term form a geometric progression. If the product
1. 1 answer
2. 1,504 views
Three ships — the Nina, the Pinta, and the Santa Maria — are setting sail from Spain on a mission to find the shortest route
1. 1 answer
2. 784 views
Consider the helix parametrized with the vector equationr(t)=cos t i+ sin t j + t k. The length L of the helix between the
1. 1 answer
2. 485 views
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
1. 0 answers
2. 398 views
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
1. 1 answer
2. 468 views
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
1. 6 answers
2. 2,524 views
Given that sin(2θ)=2/3, the value ofsin^6θ+cos^6θ can be written as a/b with a and b as coprime positive integers. Find a+b.
1. 1 answer
2. 479 views
There are four complex fourth roots to the number 4−4√3i. These can be expressed in polar form asz1=r1(cosθ1+isinθ1)
1. 2 answers
2. 1,581 views
Find the maximum value of a such that the following statement is true:If ∣x−8∣<a, then x^2−11x−210<0.
1. 4 answers
2. 510 views
Let a and b be the maximum and minimum value of x, respectively, satisfying the inequality |x+19|+|x−22|≤137, then what is
1. 1 answer
2. 1,458 views
Find the maximum value of a such that the following statement is true:If ∣x−8∣<a, then x^2−11x−210<0.
1. 0 answers
2. 412 views
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
1. 2 answers
2. 852 views
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?
1. 1 answer
2. 491 views
Bret and Shawn are playing a game where each turn the players roll a 20-sided die fair and then add the number they get to their
1. 1 answer
2. 677 views
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
1. 1 answer
2. 870 views
Γ is the circumcircle of triangle ABC with radius 12√2. If 9cos(∠B+∠C)cos∠A=−1, what is the value of BC?
1. 0 answers
2. 454 views
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?
1. 1 answer
2. 934 views
One root of the quadratic equation x^2 − 2x + m = 0 is 9. If the other root is n, what is n−m?
1. 2 answers
2. 526 views
An elevator named L in "63 Building" in Seoul is notorious for its low speed. It takes 3 seconds for L just to move one floor.
1. 0 answers
2. 526 views
5 distinct positive reals form an arithmetic progression. The 1st, 2nd and 5th term form a geometric progression. If the product
1. 1 answer
2. 1,042 views
An upscale clothing boutique charges $300 for a brand name pair of jeans, which is 50% more than the amount it costs the store
1. 3 answers
2. 735 views
The price of a hat is reduced by a% from its regular price, and then is raised by a% from the reduced price. If the resulting
1. 0 answers
2. 808 views
For each degree 17 polynomial f with real coefficients, let sf be the number of real roots (counted with multiplicity). Let S be
1. 0 answers
2. 498 views
If a is a real number and a cubic equationf(x) = x^3 − 8x^2 + (a+12)x − 2a has a repeated root, what is the sum of all the
1. 0 answers
2. 447 views
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?
1. 1 answer
2. 472 views
A and B are real numbers such that the two quadratic equations 13x^2 + 3x +2 = 0 and Ax^2 + Bx + 5 = 0 have a common root. What
1. 0 answers
2. 387 views
A lottery ball drawing machine has 50 balls, each labeled with a distinct integer from 1 to 50. Every Sunday, four different
1. 1 answer
2. 497 views
A roller coaster works by gravitational energy. The coaster car is pulled up to a high point and then released, rolling
1. 2 answers
2. 1,463 views
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:"
1. 2 answers
2. 547 views
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
1. 1 answer
2. 1,128 views
Highway curves If a circular curve without any banking has a radius of R feet, the speed limitL.in miles per hour for the curve
1. 0 answers
2. 655 views
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. 2 answers
2. 1,156 views
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. 1 answer
2. 673 views

Answers (11)

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?
MINECRAFT XD
XDXDXDXDXDDXDXDXDXDDXD TROLL WEB
The difference of the absolute value is not positive because all yall trash and suck phht loser can't do math Lmao
Can you show me the solution and result please?
Thanks :)
120 or 180? :)
Thanks MathMate :)
Thanks, but how do I find the value of x?
thanks a lot steve
Thank you drwls :)

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