All Questions ⁺⁰237806 Questions

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graphing quadratics

The parabolas defined by the equations $y=-x^2-x+1$ and $y=2x^2-1$ intersect at points $(a,b)$ and $(c,d)$, where $c\ge a$. What is $c-a$? Express your answer as a common fraction.

ellapow Apr 12, 2021

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419

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Algebra

Grady rides his bike 60% faster than his little brother Noah. If Grady rides 15 miles further than Noah in three hours, how fast in miles per hour does Noah ride?

Guest Apr 12, 2021

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449

2

Please answer these questions

1. Line $\ell_1$ is horizontal and passes through $(-5,8)$. Line $\ell_2$ is vertical and passes through $(4,-1)$. Find the point of intersection of $\ell_1$ and $\ell_2$.

2. Find the equation whose graph is shown below. read more ..

Guest Apr 12, 2021

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377

1

Probability

There are 3 math clubs in the school district, with 5, 7, and 8 students respectively. Each club has two co-presidents. If I randomly select a club, and then randomly select three members of that club to give a copy of Introduction to Counting and read more ..

Guest Apr 12, 2021

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592

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Algebra

(a) Given the following equation, x^4-x^3-3x-2 use synthetic division to test the following 3 pts and show if they are a root or not. Must show synthetic division for all 3 of the following test pts. Test these 3 read more ..

Guest Apr 12, 2021

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529

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Please Help with Quadratic Inequalites

Hello, I have been stuck with this problem:
What is the value of b+c if x^2+bx+c>0 only when x is (-inf, -2) U (3, inf)
I'm not entirely sure on how to solve this problem, a little push in the right direction would be helpful,
read more ..

ElectricPavlov ●●

Guest Apr 12, 2021

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389

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matematica

Guest Apr 12, 2021

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530

1

Determine o valor de x: a) logx (x + 6) = 2 b) log2(3x + 2) = 5 c) log2 (3x − 3) = log2 9 d) log(x + 4) + log(x − 4) = 2 ∙ log 3

Determine o valor de x: a) logx (x + 6) = 2 b) log2(3x + 2) = 5 c) log2 (3x − 3) = log2 9 d) log(x + 4) + log(x − 4) = 2 ∙ log 3

Guest Apr 12, 2021

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484

1

Expected value

In a lottery, a ticket costs 3 dollars, and the jackpot is worth 250000 dollars. In all, 200000 tickets are sold, one ticket is randomly drawn, and the winner is awarded the jackpot. What are the expected winnings in dollars of buying one ticket read more ..

Guest Apr 12, 2021

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967

2

I think I figured this out but I have a nagging feeling that I might have set up the problem wrong

Peyton and Tanner were lifting a large boulder and relocating it within their property. Peyton is pushing
the boulder with a force of 110 newtons at an angle of 55° with respect to the positive x-axis. Tanner is
pulling the boulder with read more ..

ElectricPavlov ●●

Guest Apr 12, 2021

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help

Haley has enlarged a 3-inch by 5-inch picture so that both the length and width are tripled. The area of the enlarged photo is how many times the area of the original photo?

Guest Apr 12, 2021

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539

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+273

Evaluating Functions

If , what is the value of ?

mworkhard222 ●

TheEarlyMathster Apr 12, 2021

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511

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geometry

Let AB and CD be chords of a circle, that meet at point Q inside the circle. If AQ=6 ,BQ=12 and CD=38, then find the minimum length of CQ.

Guest Apr 12, 2021

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464

4

dividing polynomials

(x^4+7x^3+17x^2+20x)÷(x^2+4)

Guest Apr 12, 2021

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496

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polynomials

Suppose f(z) and g(z) are polynomials in z, and the degree of g(z) is less than the degree of f(z). If the degree of f(z) is four, what is the degree of f(z)+g(z)?

Guest Apr 12, 2021

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553

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+273

Halp!

If y=x^2-7 and x is a real number, then what is the minimum value possible for y?

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TheEarlyMathster Apr 12, 2021

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395

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Math

Guy used a computer program to create the drawing below. He then used a tool on his program that allowed him to move point B around the circle. Each time he stopped, he recorded the measurement of angle BAC (the tangent chord angle) read more ..

Guest Apr 12, 2021

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492

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help

its a picture but the image thing isn't working so I'll just type the question.

1 snowflake + 2 snowflakes + 2 snowflakes = 525
read more ..

Guest Apr 12, 2021

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692

5

+31

probability

Here is the probability model for the blood type of a randomly chosen person in the United States.

What is the probability that a randomly chosen American does read more ..

ElectricPavlov ●●●●●

igggyuh Apr 12, 2021

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611

2

+31

Probability

A jar contains 5 pennies, 6 nickels and 5 dimes. A child selects 2 coins at random without replacement from the jar. Let X represent the amount in cents of the selected coins.

Find the probability X = 10.
read more ..

igggyuh Apr 12, 2021

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