All Questions ⁺⁰237826 Questions

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Algebra

a solution contains 3% salt. How much water should be added to 60 ounces of this solution to make a 1.8% solution?

Guest Sep 20, 2021

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455

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+80

The explanation

At a fun fair, 2/5 of the number of boy is equal to 1/3 of the number of girls. The number of adults is 1/4 of the total number of children. Each boy spent $3, each girl spent $5 and each adult spent $8. The total amount of money spent by the read more ..

DoctorOcopisMonOct Sep 20, 2021

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425

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+80

Pls help, thanks

8/9 of Nadia's cookies is the same number as 2/3 of Sally's cookies. Express the number of cookies Nadia has as a fraction of thre total number of cookies.

DoctorOcopisMonOct Sep 20, 2021

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347

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please help mee

Raja sold T-shirts in 3 colours, black, yellow and white. He had 184 more yellow than white shirts. After selling 1/4 of the yellow shirts, he had 87 more yellow than black ones. The number of white shirts was 2/3 of the number of black ones. What was the read more ..

Guest Sep 20, 2021

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410

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Polynomials

(a) Let f(x) = x^4 - 3x^2 + 2 and g(x) = 2x^5 - 6x^2 + 4x - 1. Let a be a constant. What is the largest possible degree of f(x) + a*g(x)?

(b) Let f(x) = x^4 - 3x^2 + 2 and g(x) = 2x^5 - 6x^2 + 4x - 1. Let b be a read more ..

Guest Sep 20, 2021

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430

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Polynomials

If f(x) and g(x) are polynomials such that f(x) + g(x) = -2 + x, then what is g(x) if f(x) = x^8 - 2x^3 + 2?

Guest Sep 20, 2021

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431

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Counting

In how many ways can we form an international commission if we must choose one European country from among 6 European countries, one Asian country from among 4, one North American country from among 8, and one African country from among 7?

Guest Sep 20, 2021

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334

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Kindly help with this question. Much appreciated !

Jack brought 837 big and small antique vases.
He broke 1/10 of the number of big vases and his friend gave him another 47 small
vases.
Hence, the number of small vases that he had was 1/3 of the number of big vases read more ..

Guest Sep 20, 2021

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308

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trig

In triangle XYZ, we have angle X = 90 and tan Y = 3/2. If YZ = 80, then what is XY?

Guest Sep 20, 2021

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273

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Polynomials

The degree of the polynomial is 11, and the degree of the polynomial is 11. Find all possible degrees of the polynomial p(x) + q(x).

Guest Sep 20, 2021

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241

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help function

Suppose that a and b are positive real numbers, and let
f(x) = ax if x <= -4
f(x) = abx if x > -4
If f(-4) = -60/13 and f(4) = 3120, what is a + b? read more ..

Guest Sep 20, 2021

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help trig

In triangle XYZ, we have angle X = 90 and tan Z = 3. What is cot Z?

Guest Sep 20, 2021

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480

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Please help

A baker baked 240 tarts. The ratio of the number of chocolate tarts to the number of strawberry tarts was 4:1. He gave an equal number of chocolate and strawberry tarts away and had 7 times as many chocolate tarts as strawberry tarts left. How many read more ..

Guest Sep 20, 2021

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458

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Coordinates

What is an equation of the line that passes through the point (-5,7) and is parallel to the line y = 5x + 7?

Guest Sep 20, 2021

Sep 19, 2021

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266

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Geometry

Five friends live on the same street. Their houses are at points A, B, C, D, and E, with the distances shown.

read more ..

Guest Sep 19, 2021

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248

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Inequality

What is the smallest positive integer n such that sqrt(n) - sqrt(n - 7) < 0.01?

Guest Sep 19, 2021

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276

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Roots

If (2x + 5)(x + 3) = 14, find the sum of the possible values of x.

Guest Sep 19, 2021

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304

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Algebra

Find all the values of a for which the equations

x^2 + ax + 1 = 0
x^2 - x - a = 2 read more ..

Guest Sep 19, 2021

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259

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Algebra

Find the solutions x of the equation 2ix^2 + x + 8i = 0.

Guest Sep 19, 2021

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437

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Help algebra

The quadratic 2x^2 - 3x + 27 = -4 has two imaginary roots. What is the sum of the squares of these roots? Express your answer as a decimal rounded to the nearest hundredth.

Guest Sep 19, 2021

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278

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Function

Find the largest value of c such that 1 is in the range of f(x) = x^2 - 8x + c.

Guest Sep 19, 2021

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252

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need help

f you have 2 pieces of spaghetti that have lengths 4 cm and 18 cm, what could be the possible length of a third piece of spaghetti to complete the triangle? cm < x < cm

Guest Sep 19, 2021

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419

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help

All the vipers at the Vennsylvania Zoo are colored either violet or vermillion. Half the vipers are venomous, and 3/4 of all venomous vipers are violet. There are 10 more non-venomous violet vipers than non-venomous vermillion vipers. If there are 23 non-venomous read more ..

Guest Sep 19, 2021

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424

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help math

Simplify and rationalize the denominator:

$\cfrac{1}{1+ \cfrac{1}{\sqrt{3}+2}}.$

Guest Sep 19, 2021

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