All Questions ⁺⁰237826 Questions

+1

931

2

+39

Algebra

If $x-y=15$ and $xy=4$, what is the value of $x^2+y^2$?

AbooshAndrew Dec 28, 2018

0

883

2

+10

Algebra Help

Suppose a and x satisfy x^2 + (a - (1/a)) x - 1 = 0. Solve for x in terms of a.

sprockit Dec 28, 2018

0

983

1

+1246

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?

Lightning Dec 28, 2018

0

1057

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?

Guest Dec 28, 2018

+1

826

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 ..

Guest Dec 28, 2018

+1

1580

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

982

1

+1246

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 ..

Lightning Dec 27, 2018

0

1878

1

+1246

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 ..

Lightning Dec 27, 2018

0

816

2

math

the speed of light is approximately 1.08x10^9 km per hour. write this number in standard form

Guest Dec 27, 2018

+1

1048

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 ..

ManuelBautista2019 Dec 27, 2018

+1

961

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

1036

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 ?

AbooshAndrew Dec 27, 2018

+1

990

4

+36

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 ●●●●

hashtagmath Dec 27, 2018

0

1196

6

+847

Geometric Series

Evaluate the infinite geometric series:

tertre ●●●●●●

ant101 Dec 27, 2018

0

1026

3

+847

Real Values

Find all real values of which satisfy

I got

ant101 Dec 27, 2018

+1

2294

2

+36

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 ..

hashtagmath Dec 27, 2018

0

938

1

+847

functions!

Let If then find

ant101 Dec 27, 2018

0

872

1

+36

Advanced Quadratic Problem

The distance between the two intersections of and is . Find the ordered pair, .

hashtagmath Dec 27, 2018

0

1153

2

+847

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 ..

ant101 Dec 27, 2018

0

977

1

+36

HELP ME thanks

hashtagmath Dec 27, 2018

+1

996

3

+818

Complex

Let be a complex number satisfying Compute

mathtoo Dec 27, 2018

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