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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. 402 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. 592 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. 446 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. 432 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. 575 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. 4,731 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. 435 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. 715 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. 1,229 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. 442 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. 1,487 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. 770 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. 478 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. 390 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. 461 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. 2,511 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. 468 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. 1,570 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. 484 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. 1,449 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. 407 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. 844 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. 487 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. 667 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. 860 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. 444 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. 922 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. 523 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. 517 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. 1,027 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. 721 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. 796 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. 494 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. 438 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. 467 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. 379 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. 489 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. 1,447 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. 542 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. 1,114 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
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2. 643 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. 1,143 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. 664 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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