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Questions (67)

The following is a set of data from a sample of n=51-8-1 1 6
1. 1 answer
2. 247 views
a foot ball is thrown upward with an angle of 30 degree with respect to the horizantal .to throw a 40meter pass what must be the
1. 1 answer
2. 481 views
what do the migration routes of homo sapiens reveal about their survival skills and ability to adapt
1. 2 answers
2. 874 views
In What ways did Neolitic People Dramatically improve their lives?Please check my answer.. the change over from hunting and
1. 2 answers
2. 887 views
why do you think the development of agriculture ocurred around the same time in different parts
1. 1 answer
2. 409 views
in what ways did Neolithic people dramatically improve their lives
1. 4 answers
2. 1,155 views
what environmental factors may have influenced migration routes
1. 3 answers
2. 676 views
what conclusions can you draw about humans from the information in early human migration 1,600-10,000 map
1. 2 answers
2. 727 views
what kinds of problems did stone age peoples face
1. 2 answers
2. 1,486 views
what conclusions can draw about early humans from the information presented in map
1. 5 answers
2. 1,451 views
what environmental factors have influenced migration routes
1. 2 answers
2. 424 views
to what continents did homo sapiens migrate from asia
1. 4 answers
2. 675 views
Calvin and Ken bought a bag of 60 onions. They divide all of these onions between them, such that the number of onions that Ken
1. 1 answer
2. 457 views
Sue is in an airplane which travels at a constant 300 kilometers per hour. The angle of climb of the airplane is 30∘. How long
1. 1 answer
2. 603 views
A pair of fuzzy dice are hanging by a string in my car from the rear-view mirror. I hit the gas pedal, and while I accelerate
1. 1 answer
2. 565 views
If the expression (x2+2x−1)8 is completely expanded, what is the sum of the coefficients of the terms with even powers of x?
1. 3 answers
2. 455 views
Three roots of f(x)=x4−2x3+ax2+bx+c are −5, −3 and 4. What is the value of a+b+c?
1. 0 answers
2. 467 views
The roots of the polynomial f(x)=2x3+20x2+201x+2013 are α,β and γ. What is the value of −(α+1)(β+1)(γ+1)?
1. 1 answer
2. 455 views
How many integers x satisfy the condition that both 2x and 3x are perfect squares?
1. 0 answers
2. 489 views
Calvin was at his local grocery store, and saw that they had gummy worms for sale. To satisfy his foreseeable sugar craving, he
1. 1 answer
2. 532 views
Calvin was at his local grocery store, and saw that they had gummy worms for sale. To satisfy his foreseeable sugar craving, he
1. 0 answers
2. 494 views
Find the sum of all integers m that are less than 1000 and equal to n!+1−−−−−√ for some positive integer n.
1. 1 answer
2. 420 views
If the ratio of x+y to x−y is 114, then the ratio of y to x can be written as ab where a and b are coprime positive integers.
1. 4 answers
2. 526 views
How many pairs of integers (x,y) satisfy the conditions y=3x−1, 6x−2y=2 and 0≤x≤25?
1. 1 answer
2. 614 views
Consider a five-pointed star made of resistors as shown below. Each resistor has resistance R=6 Ω. Find the equivalent
1. 2 answers
2. 739 views
Consider a five-pointed star made of resistors as shown below. Each resistor has resistance R=6 Ω. Find the equivalent
1. 1 answer
2. 583 views
Climbing to the top of Mount Everest is hard. But, it's slightly easier than you might think as people weigh less as they climb
1. 1 answer
2. 560 views
x and y are real numbers that satisfy the equations x2+y2=125 and x+y=13. What is the sum of all (distinct) possible values of
1. 1 answer
2. 478 views
a,b and c are positive integers such that the simultaneous equations (a−2b)x=1, (b−2c)x=1 and x+25=c have a positive
1. 0 answers
2. 309 views
The four values x, y, x−y and x+y are all positive prime integers. What is the sum of all the four integers?
1. 1 answer
2. 980 views
a and b are consecutive, positive integers such that a2−b2>22. What is the minimum possible value of a+b?
1. 2 answers
2. 887 views
x and y are real numbers that satisfy the equations x2+y2=125 and x+y=13. What is the sum of all (distinct) possible values of
1. 0 answers
2. 437 views
What is the real part of (2+i)(6−i)?
1. 1 answer
2. 292 views
The point (x,y) lies on both conics x2+xy+x=81 and y2+xy+y=51. Given that x+y is positive, determine the value of x+y.
1. 2 answers
2. 790 views
The point (x,y) lies on both conics x2+xy+x=81 and y2+xy+y=51. Given that x+y is positive, determine the value of x+y.
1. 1 answer
2. 582 views
Let A,B and C be matrices such that A=⎛⎝132213⎞⎠, B=(122423) and C=AB.What is the sum of all the elements (entries) of
1. 1 answer
2. 452 views
What is the sum of all of the positive divisors of 100?
1. 1 answer
2. 366 views
The point (x,y) lies on both conics x2+xy+x=81 and y2+xy+y=51. Given that x+y is positive, determine the value of x+y.
1. 1 answer
2. 962 views
How many ordered pairs of integers (x,y) are there such that 2x2−2xy+y2=225?
1. 2 answers
2. 995 views
The function f(x)=x4−15x3+81x2−201x+182 has four complex roots, one of which is 3−2i. What is the sum of all real and
1. 3 answers
2. 551 views
Suppose z=a+bi, where a and b are integers and i is the imaginary unit. We are given that |1+iz|=|1−iz| and |z−(13+15i)|<17.
1. 2 answers
2. 435 views
Let f(x)=2x2+40x+25. Given that f(x) leaves the same remainder when divided by x−a as when divided by x+2a for a positive
1. 0 answers
2. 426 views
What is the largest possible integer that can be chosen as one of five distinct positive integers whose average is 10?
1. 0 answers
2. 413 views
Find a positive integer N, such that when N is added to 98, it gives the same result as N multiplied to 98.
1. 0 answers
2. 385 views
The three terms x+12, 3x+5 and 2x+25 are the first three terms of an arithmetic progression. What is the value of x?
1. 0 answers
2. 386 views
n is a digit such that the 5-digit number n878n is divisible by 9. What is the value of n?
1. 0 answers
2. 398 views
Able starts off counting at 13, and counts by 7. What is the 11th number that Able will say?
1. 1 answer
2. 1,047 views
The caber toss is a traditional Scottish sport that involves hurling a caber, which is essentially a large piece of a tree: a
1. 2 answers
2. 481 views
Airplanes are noisy things. For example, if you stand really close to a runway, a military jet can produce a sound intensity of
1. 0 answers
2. 438 views
Let 3a be the highest power of 3 that divides 1000!. What is a?
1. 1 answer
2. 346 views
x is a positive number such that x2+9x−22=0. What is the sum of all possible values of y which satisfy the equation
1. 1 answer
2. 393 views
What is the imaginary part of −169−−−−√?
1. 1 answer
2. 380 views
The sun goes around the center of our galaxy once every 250 million years. The sun is also 2.55×1020 m from the center of our
1. 2 answers
2. 504 views
I'm driving my car of mass 1000 kg at 100 km/hr when I accidentally hit the rear end of a truck of mass 5000 kg traveling in the
1. 3 answers
2. 841 views
Sally sells seashells by the seashore. In the morning, her sack of shells weighed 70 N. She sold seventy shells and in the
1. 1 answer
2. 473 views
The combination of the force of gravity and my hand provide a net force of 40 N on a ball straight up. The ball accelerates at
1. 1 answer
2. 443 views
What is the value of 232?
1. 0 answers
2. 322 views
How many positive integers, a, are there such that 2027 divided by a leaves a remainder of 7?
1. 2 answers
2. 923 views
What is the sum of all the possible values of a for which 25x2+(a−15)x+9 has exactly one distinct real root?
1. 1 answer
2. 515 views
How many distinct prime factors does 100100 have?
1. 1 answer
2. 501 views
The probability that it will take 5 or more flips of a fair coin before it lands on heads can be written as ab, where a and b
1. 0 answers
2. 384 views
The swimming pool that Calvin goes to has dimensions 20 meters long, 8 meters wide and 3 meters deep. What is the volume of
1. 1 answer
2. 609 views
How many distinct prime factors does 100100 have?
1. 2 answers
2. 424 views
Gymnasts can do all sorts of ridiculous tricks on various equipment. In the rings event, the gymnast is supported by two rings
1. 1 answer
2. 487 views
Alan and Bob are playing with numbers. Starting with the number n=1 they take turns performing arithmetic manipulations with n.
1. 1 answer
2. 541 views
If a is acceleration, v is velocity, x is position, and t is time, thencheck the validity (wrong or correct) of the following
1. 3 answers
2. 1,708 views
r+1 is less than or equal to 0.What is r?
1. 3 answers
2. 375 views

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