All Questions ⁺⁰236341 Questions

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+845

help me

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

gnistory Jun 27, 2024

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17

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+845

help need help

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

gnistory Jun 27, 2024

0

12

1

+64

Halp

Find the ordered pair $(s,t)$ that satisfies the system
\begin{align*}
\dfrac{s}{2} + 5t &= 3,\\
3t - 6s &= 9. read more ..

ghistory Jun 27, 2024

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11

4

+84

just need conformation ;)

Trisect each side of an equilateral triangle of side length 2 and construct an equilateral triangle on the center third of each side. Omit the side of each new triangle that was once a part of the original triangle. Repeat the trisection, construction, read more ..

shmewy Jun 27, 2024

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26

1

+742

Number Theory

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

bingboy Jun 27, 2024

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21

1

+742

Number Theory

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

bingboy Jun 27, 2024

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17

1

+742

Number Theory

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

bingboy Jun 27, 2024

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15

1

+742

Number Theory

Find the last three digits of $35*{781}$.

bingboy Jun 27, 2024

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9

2

+742

Number Theory

Find the units digit of $13*287$.

bingboy Jun 27, 2024

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18

1

+742

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.)

AsianMathGuy ●

bingboy Jun 27, 2024

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19

1

+845

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 ..

gnistory Jun 27, 2024

0

15

0

+845

Algebra

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

gnistory Jun 27, 2024

0

15

1

+948

Algebra

Let a1, a2, a3, ... be an arithmetic sequence. Let Sn denote the sum of the first n terms. If S_5 = 1/5 and S_10 = 1/10, then find S_15.

Rangcr897 Jun 27, 2024

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17

0

+948

Algebra

Let
f(x) = \frac{2x + 5}{x - 4} + \frac{x^2 + 1}{4x - 3}.
Find the inverse $f^{-1}(x)$.

Rangcr897 Jun 27, 2024

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21

0

+948

Algebra

Let x and y be nonnegative real numbers. if x^2+5y^2=30, what is the max value of x + y?

Rangcr897 Jun 27, 2024

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16

0

+845

Inequality

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 ..

gnistory Jun 27, 2024

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13

2

+845

Algebra

The quadratic equation $x^2-mx+24 = 10$ has roots $x_1$ and $x_2$. If $x_1$ and $x_2$ are integers, how many different values of $m$ are possible?

gnistory Jun 27, 2024

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21

1

+845

help algebra

Find the ordered triple (p,q,r) that satisfies the following system:
p - 2q = 3
q - 2r = -2 + q
p + r = 9 + p read more ..

gnistory Jun 27, 2024

0

13

1

+845

help me

I drove to the beach at a rate of 40 miles per hour. If I had driven at a rate of 50 miles per hour instead, then I would have arrived 45 minutes later. How many miles did I drive?

gnistory Jun 27, 2024

Jun 26, 2024

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19

1

+845

need help plz

At a cafeteria, Mary orders two pieces of toast and a bagel, which comes out to $3.15. Gary orders a bagel and a muffin, which comes out to $3.50. Larry orders a piece of toast, two bagels, and three muffins, which comes out to $8.15. How many cents does read more ..

gnistory Jun 26, 2024

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23

0

+845

help help

I have to paint one side of a wall. The wall is 12 meters tall and 120 meters long. Each gallon of paint covers 150 square feet. If a foot is approximately 0.3048 meters, then what is the smallest whole number of gallons read more ..

gnistory Jun 26, 2024

0

19

0

+845

help me

I have to paint one side of a wall. The wall is 12 meters tall and 120 meters long. Each gallon of paint covers 150 square feet. If a foot is approximately 0.3048 meters, then what is the smallest whole number of gallons read more ..

gnistory Jun 26, 2024

0

21

0

+845

need help

All members of our painting team paint at the same rate. If 20 members can paint a 2000 square foot wall in 40 minutes, then how long would it take the 20 members to paint a 6000 square foot wall, in minutes?

gnistory Jun 26, 2024

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