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Questions (67)
The following is a set of data from a sample of n=5
1-8-1 1 6
1 answer
252 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 answer
494 views
what do the migration routes of homo sapiens reveal about their survival skills and ability to adapt
2 answers
882 views
In What ways did Neolitic People Dramatically improve their lives?
Please check my answer.. the change over from hunting and
2 answers
913 views
why do you think the development of agriculture ocurred around the same time in different parts
1 answer
423 views
in what ways did Neolithic people dramatically improve their lives
4 answers
1,169 views
what environmental factors may have influenced migration routes
3 answers
684 views
what conclusions can you draw about humans from the information in early human migration 1,600-10,000 map
2 answers
736 views
what kinds of problems did stone age peoples face
2 answers
1,493 views
what conclusions can draw about early humans from the information presented in map
5 answers
1,462 views
what environmental factors have influenced migration routes
2 answers
432 views
to what continents did homo sapiens migrate from asia
4 answers
697 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 answer
468 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 answer
631 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 answer
581 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?
3 answers
468 views
Three roots of f(x)=x4−2x3+ax2+bx+c are −5, −3 and 4. What is the value of a+b+c?
0 answers
480 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 answer
470 views
How many integers x satisfy the condition that both 2x and 3x are perfect squares?
0 answers
503 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 answer
560 views
Calvin was at his local grocery store, and saw that they had gummy worms for sale. To satisfy his foreseeable sugar craving, he
0 answers
524 views
Find the sum of all integers m that are less than 1000 and equal to n!+1−−−−−√ for some positive integer n.
1 answer
434 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.
4 answers
536 views
How many pairs of integers (x,y) satisfy the conditions y=3x−1, 6x−2y=2 and 0≤x≤25?
1 answer
631 views
Consider a five-pointed star made of resistors as shown below. Each resistor has resistance R=6 Ω. Find the equivalent
2 answers
752 views
Consider a five-pointed star made of resistors as shown below. Each resistor has resistance R=6 Ω. Find the equivalent
1 answer
595 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 answer
586 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 answer
492 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
0 answers
321 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 answer
991 views
a and b are consecutive, positive integers such that a2−b2>22. What is the minimum possible value of a+b?
2 answers
901 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
0 answers
448 views
What is the real part of (2+i)(6−i)?
1 answer
303 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.
2 answers
802 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 answer
595 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 answer
465 views
What is the sum of all of the positive divisors of 100?
1 answer
380 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 answer
976 views
How many ordered pairs of integers (x,y) are there such that 2x2−2xy+y2=225?
2 answers
1,009 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
3 answers
562 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.
2 answers
448 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
0 answers
435 views
What is the largest possible integer that can be chosen as one of five distinct positive integers whose average is 10?
0 answers
433 views
Find a positive integer N, such that when N is added to 98, it gives the same result as N multiplied to 98.
0 answers
405 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?
0 answers
392 views
n is a digit such that the 5-digit number n878n is divisible by 9. What is the value of n?
0 answers
407 views
Able starts off counting at 13, and counts by 7. What is the 11th number that Able will say?
1 answer
1,058 views
The caber toss is a traditional Scottish sport that involves hurling a caber, which is essentially a large piece of a tree: a
2 answers
497 views
Airplanes are noisy things. For example, if you stand really close to a runway, a military jet can produce a sound intensity of
0 answers
452 views
Let 3a be the highest power of 3 that divides 1000!. What is a?
1 answer
351 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 answer
402 views
What is the imaginary part of −169−−−−√?
1 answer
387 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
2 answers
521 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
3 answers
865 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 answer
485 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 answer
465 views
What is the value of 232?
0 answers
330 views
How many positive integers, a, are there such that 2027 divided by a leaves a remainder of 7?
2 answers
939 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 answer
534 views
How many distinct prime factors does 100100 have?
1 answer
513 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
0 answers
394 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 answer
637 views
How many distinct prime factors does 100100 have?
2 answers
435 views
Gymnasts can do all sorts of ridiculous tricks on various equipment. In the rings event, the gymnast is supported by two rings
1 answer
502 views
Alan and Bob are playing with numbers. Starting with the number n=1 they take turns performing arithmetic manipulations with n.
1 answer
556 views
If a is acceleration, v is velocity, x is position, and t is time, then
check the validity (wrong or correct) of the following
3 answers
1,728 views
r+1 is less than or equal to 0.
What is r?
3 answers
387 views