All Questions ⁺⁰237739 Questions

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Coefficient

Find the coefficient of y^4 in the expansion of (2y - 5 + y^2)^6.

Guest Jan 9, 2023

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167

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help with graph

What is the smallest distance between the origin and a point on the graph of y = 1/2*(x^2 - 8)?

Guest Jan 9, 2023

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185

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A bedroom door is 4 feet wide and 10 feet tall. What is its area?

A bedroom door is 4 feet wide and 10 feet tall. What is its area?

Guest Jan 9, 2023

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231

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System question

If the system of equations 3x+y=a, 2x+5y=2a, has a solution (x,y) when x=12, compute a.

Guest Jan 9, 2023

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help fractions

Levans writes a positive fraction in which the numerator and denominator are integers, and the numerator is 1 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 ..

Guest Jan 9, 2023

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как решить ((2/15 + 1 7/12)30/103-2 / 250.28125)/((0.375+0.35)+2.75/8.8), умоляю, помогите

как решить ((2/15 + 1 7/12)*30/103-2 / 25*0.28125)/((0.375+0.35)+2.75/8.8), умоляю, помогите

Guest Jan 9, 2023

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173

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Probability

In Ms. Q's deck of cards, every card is one of four colors (red, green, blue, and yellow), and is labeled with one of seven numbers (1, 2, 3, 4, 5, 6, and 7). Among all the cards of each color, there is exactly one card labeled with each number. The read more ..

Guest Jan 9, 2023

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Factor

We are looking to factor 23x^2 + kx - 5 + x^2 - 3. Some values of k allow us to factor it as a product of linear binomials with integer coefficients. what are all such values of k?

Guest Jan 9, 2023

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184

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Distributions

In how many ways can you distribute 10 indistinguishable balls among 8 distinguishable boxes, if at least one of the boxes must be empty?

Guest Jan 9, 2023

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help counting

How many solutions are there to the equation
u + v + w + x + y + z = 18
where u, v, w, x, y, and z are nonnegative integers, and x is at most 10?

Guest Jan 9, 2023

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178

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Complex numbers

Describe all solutions to zw - 3w - 2iw + 4z = 7iw + 5w + 11iz - 13 + 15i
where z and w are complex numbers.

Guest Jan 9, 2023

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179

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plz help ASAP thank u

the number of bacteria p(t) in a petri dish at time t minutes is modelled by p(t)=1000(ln3)^t
Find the rate of growth of the population of bacteria when there are 10000 bacteria in the dish.

Guest Jan 9, 2023

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159

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Complex numbers

Find all the solutions to z^4 = -4 - 5z^2 in complex numbers.
Express all the solutions in the form a + bi, where a and b are real numbers.

Guest Jan 9, 2023

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quadratic

What is the largest number c such that 2x^2 + 5x + c = x^2 - 4x has at least one real solution? Express your answer as a common fraction.

Guest Jan 9, 2023

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183

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help counting

(a) Find the number of ways that Magnus can give out 20 identical stickers to 5 of his friends. (Not everyone has to get a sticker.)

(b) Find the number of ways that Magnus can give out 20 identical stickers to 5 of read more ..

Guest Jan 9, 2023

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168

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help with quadratic

What real value of t produces the smallest value of the quadratic t^2 -9t - 36 + t^2 - t + 14?

Guest Jan 9, 2023

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183

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Digits

The four-digit numeral 3AA1 is divisible by 19. What digit does A represent?

Guest Jan 9, 2023

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166

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Coordinates

A median of a triangle is a line segment joining a vertex of a triangle to the midpoint of the opposite side. The three medians of a triangle are drawn below.

Note that the three medians appear to intersect at the same point! Let's read more ..

Guest Jan 9, 2023

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counting

There is a group of five children, where two of the children are twins. How many ways can I distribute 10 identical pieces of candy to the children, if the twins must get an equal amount of candy?

Guest Jan 9, 2023

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168

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quadratic

Find the sum of all solutions to the equation 4x(x-3) = 23 + 3x^2 + 10x.

Guest Jan 9, 2023

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166

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Primes

How many prime numbers less than 100 have a units digit of 7?

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179

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help

Guest Jan 9, 2023

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180

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hvad er 4

Guest Jan 9, 2023

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175

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four 1 should = 1/2 can ude + - / and *

four 1 should = 1/2 can ude + - / and *

Guest Jan 9, 2023

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