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Post New Question
All Questions
+0
230628 Questions
+1
843
2
+39
Algebra
If $x-y=15$ and $xy=4$, what is the value of $x^2+y^2$?
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AbooshAndrew
Dec 28, 2018
0
775
2
+10
Algebra Help
Suppose a and x satisfy x^2 + (a - (1/a)) x - 1 = 0. Solve for x in terms of a.
Rom
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sprockit
Dec 28, 2018
0
897
1
+1242
Circle Area and Circumference 2
If the degree measure of an arc of a circle is increased by 20% and the radius of the circle is increased by 25%, by what percent does the length of the arc increase?
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Lightning
Dec 28, 2018
0
958
1
Help Plz
Four primes a, b, c and d form an increasing arithmetic sequence with a>5 and common difference 6. What is the ones digit of a?
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Guest
Dec 28, 2018
+1
728
3
This Is Too Hard For Me; Please Help
What is the coefficient of x^3 when
24x^4+6x^3+4x^2-7x-5
is multiplied by
6x^3+3x^2+3x+4
read more ..
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Guest
Dec 28, 2018
+1
1525
5
+1495
I need help!! Please!
Help Me, please!!
Type the answer in paragraph form
read more ..
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ManuelBautista2019
Dec 28, 2018
Dec 27, 2018
0
918
1
+1242
Help!
In the figure with four circles below, let A1 be the area of the smallest circle, let A2 be the area of the region inside the second-smallest circle but outside the smallest circle, and so on. If A1 : A2 : A3 : A4 = 1 : 2 : 3 :
read more ..
Rom
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Lightning
Dec 27, 2018
0
1829
1
+1242
Circle Area and Circumference
The minute hand of a 12-hour clock measures 10 cm from its tip to the center of the clock face, and the hour hand from its tip to the center of the clock face is 5 cm. What is the sum of the distances, in meters, traveled by the tips of both hands in one
read more ..
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Lightning
Dec 27, 2018
0
718
2
math
the speed of light is approximately 1.08x10^9 km per hour. write this number in standard form
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Guest
Dec 27, 2018
+1
973
3
+1495
Help Me Please
Help Me Please
Solve the problem.
Express the answer using proper significant figures and units. Refer to the periodic table as needed.
read more ..
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ManuelBautista2019
Dec 27, 2018
+1
861
5
PLEASE HELP!
If x, y, and z are positive integers such that 6xyz+30xy+21xz+2yz+105x+10y+7z=812, find x+y+z.
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Guest
Dec 27, 2018
0
948
1
+39
Money Problem
On Tuesday, I worked hours and earned dollars per hour. My friend Andrew worked hours but only earned dollars an hour. At the end of the day, I had earned two dollars more than he had. What is the value of ?
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AbooshAndrew
Dec 27, 2018
0
922
4
+34
Geometric Sequences
Let and be nonconstant geometric sequences with different common ratios. If then what is the sum of the common ratios of the two sequences?
Melody
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hashtagmath
Dec 27, 2018
0
1127
6
+884
Geometric Series
Evaluate the infinite geometric series:
tertre
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ant101
Dec 27, 2018
0
950
3
+884
Real Values
Find all real values of which satisfy
I got
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ant101
Dec 27, 2018
0
2277
2
+34
Fraction Problem
If the numerator of a fraction is increased by six, the value of the fraction will increase by one. If the denominator of the original fraction is increased by 36, the value of the original fraction will decrease by one. What is the original fraction?
read more ..
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hashtagmath
Dec 27, 2018
0
840
1
+884
functions!
Let If then find
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ant101
Dec 27, 2018
0
775
1
+34
Advanced Quadratic Problem
The distance between the two intersections of and is . Find the ordered pair, .
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hashtagmath
Dec 27, 2018
0
1075
2
+884
cool question
You have a whole pizza in the refrigerator. On your first trip to the refrigerator, you eat half the pizza. On each successive trip, you eat half of the remaining pizza. After five trips to the refrigerator, what fractional part of the pizza have you eaten?
read more ..
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ant101
Dec 27, 2018
0
873
1
+34
HELP ME thanks
tertre
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hashtagmath
Dec 27, 2018
+1
916
3
+816
Complex
Let be a complex number satisfying Compute
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mathtoo
Dec 27, 2018
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