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Post New Question
All Questions
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229743 Questions
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319
1
Algebra
a solution contains 3% salt. How much water should be added to 60 ounces of this solution to make a 1.8% solution?
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Guest
Sep 20, 2021
0
348
1
+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
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DoctorOcopisMonOct
Sep 20, 2021
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350
1
+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.
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DoctorOcopisMonOct
Sep 20, 2021
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242
1
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
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Guest
Sep 20, 2021
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307
1
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
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Guest
Sep 20, 2021
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318
1
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?
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Guest
Sep 20, 2021
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321
1
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?
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Guest
Sep 20, 2021
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236
1
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
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Guest
Sep 20, 2021
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220
1
trig
In triangle XYZ, we have angle X = 90 and tan Y = 3/2. If YZ = 80, then what is XY?
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Guest
Sep 20, 2021
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177
0
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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155
0
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?
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Guest
Sep 20, 2021
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273
1
help trig
In triangle XYZ, we have angle X = 90 and tan Z = 3. What is cot Z?
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Guest
Sep 20, 2021
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380
3
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
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Guest
Sep 20, 2021
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348
2
Coordinates
What is an equation of the line that passes through the point (-5,7) and is parallel to the line y = 5x + 7?
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Guest
Sep 20, 2021
Sep 19, 2021
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172
0
Geometry
Five friends live on the same street. Their houses are at points A, B, C, D, and E, with the distances shown.
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Guest
Sep 19, 2021
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164
0
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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177
0
Roots
If (2x + 5)(x + 3) = 14, find the sum of the possible values of x.
Guest
Sep 19, 2021
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210
0
Algebra
Find all the values of a for which the equations
x^2 + ax + 1 = 0
x^2 - x - a = 2
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Guest
Sep 19, 2021
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164
0
Algebra
Find the solutions x of the equation 2ix^2 + x + 8i = 0.
Guest
Sep 19, 2021
0
318
1
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.
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Guest
Sep 19, 2021
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183
0
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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162
0
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
0
345
2
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
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Guest
Sep 19, 2021
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316
1
help math
Simplify and rationalize the denominator:
$\cfrac{1}{1+ \cfrac{1}{\sqrt{3}+2}}.$
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Guest
Sep 19, 2021
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