All Questions ⁺⁰225578 Questions

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284

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Probability

Randomly selecting a page in a booklet, the chance to get an even page number is 7/15. How many pages does the booklet have?

Guest Jan 22, 2022

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166

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Digits

What is the units digit of the sum of all positive multiples of 6 smaller than ?

Guest Jan 22, 2022

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250

2

What is correct in binary code?

What is correct in binary code?
01000011011011110111001001110010011001010110001101110100

Guest Jan 22, 2022

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158

1

need help

If each dimension of a rectangle decreases by 1, its area will decrease from 2017 to . What will be the area of the rectangle if each of its dimensions increases by 1?

Guest Jan 22, 2022

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174

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geometry

In an isosceles △ABC (AC = BC) its incircle touches the side BC at point T. Given AC = 4 and AT = 3. Find the length of AB.

Guest Jan 22, 2022

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119

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geometry

Two sides of a parallelogram are 30 and 20. One diagonal has a length of . What is the length of the other diagonal?

Guest Jan 22, 2022

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168

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+4

Restaurant Table Problem. I have tried it on my own but am unsure of my answer. Would appreciate if someone could confirm.

An architect is designing the dining area of a new restaurant. The owner was to use 3 1/2 ft by 3 1/2 ft square tables to accomodate groups of 4 guests and join two or three tables to accomdate bigger groups. The architect must adhere to the following requirements: read more ..

bse16084 Jan 22, 2022

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270

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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 Jan 22, 2022

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283

0

+676

We consider the set of functions given by

We consider the set of functions given by

the equation with real parameter a. read more ..

Straight Jan 22, 2022

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274

2

+31

Beautiful intricate math problem

Hello! Here is a really fun problem I came up with.

You are given a perfect square
read more ..

ibhar Jan 22, 2022

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152

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Polynomial Functions

1. (a) Given the following equation, X^4-6x^3-2x+7 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 possible root pts also called possible read more ..

Guest Jan 22, 2022

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168

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word problem

A father is 9 times as old as his son. In three years, the father will be times as old as his son.
How old is the son?

Guest Jan 22, 2022

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158

1

quadratic

The quadratic x^2 + 5x + c = 0 has roots in the form of $x = \frac{-5 \pm \sqrt{17}}{2}$. What is the value of ?

Guest Jan 22, 2022

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183

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Counting problem

How many ways can you arrange 2 boys and 3 girls in a line, if the 2 boys must stand next to each other?

Guest Jan 22, 2022

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153

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Algebra

Find constants a and b such that (2x + 17)/(x^2 - x - 2) = a/(x - 2) + b/(x + 1) for all x such that x≠-1 and x≠2.

Guest Jan 22, 2022

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234

2

+12

help please

A kite is flying at a vertical height of 65 meters. It's string is attached to the ground at a 31 degree angle with the ground. How long is the string? Round to the nearest WHOLE NUMBER. (hint: draw a picture and find the hypotenuse)

meeeeeee Jan 22, 2022

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126

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Polynomials

Let f(x) = x^14 - 7x^9 - 3x^2 + 2 and g(x) = 2x^14 + 3x^10 - 6x^8 + 2x - 1. Let b be a constant. What is the smallest possible degree of the polynomial f(x) + b*g(x)?

If a is the constant the the largest possible read more ..

Guest Jan 22, 2022

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169

1

Coordinates

Let C be the circle with equation x^2+2y-9=-y^2+18x+9+12x+22. If (a,b) is the center of C and r is its radius, what is the value of a+b+r?

Guest Jan 22, 2022

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199

1

Polynomials

Consider the polynomial f(x) = 1 - 12x + 3x^2 - 4x^3 + 5x^4 and g(x) = 3 - 2x - 6x^3 + 19x^4. Find c such that the polynomial f(x) + cg(x) has degree 3.

Guest Jan 22, 2022

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134

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Algebra

Find all pairs (x,y) of real numbers such that x + y = 10 and x^2 + y^2 = 56 + 3xy. For example, to enter the solutions (2,4) and (-3,9), you would enter "(2,4),(-3,9)" (without the quotation marks).

Guest Jan 22, 2022

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231

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Answer in old link

https://web2.0calc.com/questions/teachers-can-explain-how-to-do-this-thanks

Guest Jan 22, 2022

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246

2

Algebra question

Calculate sqrt(60x)*sqrt(12x)*sqrt(63x)*sqrt(42x). Express your answer in simplest radical form in terms of x. Note: When entering a square root with more than one character, you must use parentheses or brackets. For example, you should enter sqrt(14) as read more ..

Guest Jan 22, 2022

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122

0

Trig

Let a, b, and t be real numbers such that
cos a + sin b = 3t+2
sin a + cos b = 4t + 6
Compute tan a + tan b. read more ..

Guest Jan 22, 2022

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