All Questions ⁺⁰236046 Questions

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7

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+1557

Algebra

Find all real values of x such that
\frac{x^2 + 2x + 5}{3x^2 - x - 4} + \frac{x^2 + 4x + 8}{x^2 - 4x - 5} \ge 0.
Note: Your solution should be thorough, and explain why all your values are the only values that satisfy the inequality. read more ..

parmen Oct 25, 2024

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7

2

+4

please help with math

Point H is the orthocenter of triangle ABC. If BAC = 115 degrees, what is BHC in degrees?

cheeseeeee Oct 25, 2024

0

6

1

+781

Algebra

Let a1, a2, a3, ..., a10 be an arithmetic series. If a1 + a3 = -2 and a2 + a4 + a6 = 1, then find a1.

booboo44 Oct 25, 2024

0

4

0

+781

Algebra

Laverne starts counting out loud by 5's. She starts with 2. As Laverne counts, Shirley sums the numbers Laverne says. When the sum finally exceeds 100, Shirley runs screaming from the room. What number does Laverne say that sends read more ..

booboo44 Oct 25, 2024

0

3

4

+4

Precalc + Trig?

Hey, I don't understand how to do this. Can someone help?
Calculate
As usual, the output of an inverse trig function should be in radians.

mikaisntbad Oct 25, 2024

0

8

0

+606

Number Theory

How many lattice points (points with integer coordinates) are on the line segment whose endpoints are $(3,17)$ and $(82,150)?$ (Include both endpoints in your count.)

cooIcooIcooI17 Oct 25, 2024

0

4

0

+606

Number Theory

Select all the integers that are congruent to $2$ modulo $7.$
1, 2, 3, 4, 5, 6, 7

cooIcooIcooI17 Oct 25, 2024

0

5

0

+606

Number Theory

How many of the $1000$ smallest positive integers are congruent to $5$ modulo $171?$

cooIcooIcooI17 Oct 25, 2024

0

8

0

+606

Number Theory

How many positive integers $n$ satisfy $127 \equiv 18 \pmod{n}$? ($n = 1$ is allowed.)

cooIcooIcooI17 Oct 25, 2024

0

6

1

+38

PLEASE HELP THIS IS HARD

While eating out mike and joe each tipped their server $2 mike tipped 10% of his bill and joe tipped 20% of his bill. What was the difference in dollars between their bills.

SuckAtMathPleaseHelp Oct 25, 2024

0

7

2

+38

Help?

What number results when 42 is increased by 120%?

SuckAtMathPleaseHelp Oct 25, 2024

0

8

2

+38

Help?

When a number is reduced by 40%, the result is 36. What is the original number?

SuckAtMathPleaseHelp Oct 25, 2024

Oct 24, 2024

0

4

0

+1455

Algebra

Find the ordered pair that satisfies the system
\dfrac{s}{2} + 5t &= 3 - 2t + s, \\
3t - 6s &= 9 - 7t.

kittykat Oct 24, 2024

0

4

0

+1455

Algebra

Find the largest integer $k$ such that the equation
5x^2 - kx + 8 - 20x^2 + 45 = 0
has no real solutions.

kittykat Oct 24, 2024

0

5

1

+1455

Algebra

Find the discriminant of the quadratic 5x^2 - 2x + 8 - 2x^2 + 6x + 2 - 2x^2 + 4x - 1.

kittykat Oct 24, 2024

0

6

1

+606

Algebra

The equation of the line below can be expressed in the form
\frac{x}{a} + \frac{y}{b} = 1.
Find a.
The lines passes through (5,8) and (-4,17).

cooIcooIcooI17 Oct 24, 2024

0

4

0

+606

Algebra

Evaluate the infinite geometric series
0.4 + 0.036 + 0.0000324 + ...
Express your answer as a fraction with integer numerator and denominator.

cooIcooIcooI17 Oct 24, 2024

0

4

0

+606

Algebra

Levans writes a positive fraction in which the numerator and denominator are integers, and the numerator is 2 greater than the denominator. He then writes several more fractions. To make each new fraction, he increases both the numerator and the denominator read more ..

cooIcooIcooI17 Oct 24, 2024

0

5

1

+842

Algebra

For certain values of k and m the system
a + 2b = -3 - 5b
4a + 2b = k - a - mb + 10a
has infinitely many solutions (a,b) What are k and m? read more ..

RedDragonl Oct 24, 2024

0

4

0

+842

Algebra

The system of equations
\frac{xy}{x + y} = 1, \quad \frac{xz}{x + z} = 1, \quad \frac{yz}{y + z} = 2
has exactly one solution. What is $z$ in this solution?

RedDragonl Oct 24, 2024

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