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All Questions
+0
230684 Questions
+1
950
2
HELP PLZ HELP
Odell and Kershaw run for 30 minutes on a circular track. Odell runs clockwise at 250 m/min and uses the inner lane with a radius of 50 meters. Kershaw runs counterclockwise at 300 m/min and uses the outer lane with a radius of 60 meters, starting on the
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Guest
Oct 31, 2019
0
907
4
+15
HELPHELP
In the race Math 600, drivers must complete 200 laps of 3 miles each. Dave drove the first 150 laps at 180 mph and the last 50 laps at 200 mph. What was Dave's average speed for the race, in miles per hour? Express your answer as a common fraction.
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HIHIBIGBRAIn
Oct 31, 2019
0
476
0
help
The sum of 225 consecutive positive integers only has digits 1 or 0. What is the smallest possible value of the sum?
Guest
Oct 31, 2019
0
772
1
Help
The polynomial p(x) = x^2+ax+b has distinct roots 2a and b. Find a+b.
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Guest
Oct 31, 2019
0
800
4
help needed now
Point $P$ is located strictly in the interior of rectangle $ABCD$ such that $PA$, $PB$, $PC$, and $PD$ have distinct positive integer values. What is the least possible value of $PA+PB+PC+PD$?
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Guest
Oct 31, 2019
0
717
2
help
A repunit is a positive integer whose base-ten representation consists entirely of $1$s. For example, the first five repunits are $1, 11, 111, 1111,$ and $11111$. If $S$ is the sum of the first $100$ repunits, what is the sum of the digits
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Guest
Oct 31, 2019
0
781
3
Differentisl
f(x)=x·e^-x+3x
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Guest
Oct 31, 2019
0
698
2
help asap please thx
If then find the value of .
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Guest
Oct 31, 2019
0
625
1
competition
What knowledge of math you need for a math competition (For high school) ?
Can someone list the most important topics please.
off-topic
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Guest
Oct 31, 2019
0
3283
1
Pearson Problems
Hideki buys 2 sweaters for $18 each. He can use one of the following coupons: Coupon 1: Buy one, get one 40% off Coupon 2: 25% off entire purchase Which coupon should Hideki use to get a better deal?
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Guest
Oct 31, 2019
Oct 30, 2019
0
4089
2
cody's car accelerates from 0 m/s to 45 m/s northward in 15 seconds. what is the acceleration of the car
cody's car accelerates from 0 m/s to 45 m/s northward in 15 seconds. what is the acceleration of the car
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Guest
Oct 30, 2019
0
1413
3
+188
Factorials/Order of Operations
Hello! Could someone please explain to me where factorials are "listed" in the order of operations? Do they go after or before parentheses/exponents/multiplication?
Thanks!
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milkcloud
Oct 30, 2019
0
1332
8
I am sorry, but i need urgent help
If A is the sum of the positive divisors of 500, what is the sum of the distinct prime divisors of A?
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Guest
Oct 30, 2019
0
639
4
12.3 Contemporary Math
11! / 8!(8-11)!
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Guest
Oct 30, 2019
0
688
1
how many cars are there
the ratio of passenger cars to cargo cars is 33:11 if the total number of cars is 176 how many cargo cars are there?
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Guest
Oct 30, 2019
0
632
1
HELP
Let , where and are real constants, and . Suppose that for all , it is true that . What is ?
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Guest
Oct 30, 2019
-1
947
3
+134
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off-topic
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killersteve27
Oct 30, 2019
0
784
3
help
The letters in the word SLEEP are arranged. How many different arrangement begin with the letter E?
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Guest
Oct 30, 2019
0
783
5
help
A six digit number is said to be lucky if the sum of its first three digits is equal to the sum of the last three digits. Let S be the sum of all lucky numbers. Find the remainder when S is divided by 13.
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Guest
Oct 30, 2019
0
538
1
help
Let a and b be positive integers such that 1^4 + 5^4 + 6^4 + a^4 + b^4 = 2019. Find a + b.
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Guest
Oct 30, 2019
-1
2479
2
+1982
Graph the inequality x ≤ -7.
Graph the inequality x ≤ -7.
A.
B.
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macabresubwoofer
Oct 30, 2019
0
739
1
+1982
Is this statement true or false?
Is this statement true or false?
Zero is a solution of -1 < x < 1.
A. true
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macabresubwoofer
Oct 30, 2019
0
626
1
Help
A grocer wants to make a 10-pound mixture of peanuts and cashews that he can sell for $4.75 per pound. If peanuts cost $4.00 per pound and cashews cost $6.50 per pound, how many pounds of each should he use? Let p = pounds of peanuts and let c = pounds
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Guest
Oct 30, 2019
+1
819
3
+92
Word Problem/Case Work Help Needed!!
Once upon a time in a land far, far away there lived 100 knights, 99 princesses, and 101 dragons. Over time, knights beheaded dragons, dragons ate princesses, and princesses poisoned knights. But they always obeyed an ancient law that prohibits k*****g
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doorknoob
Oct 30, 2019
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