All Questions ⁺⁰192813 Questions

+1

63

0

heeelp

Right angled triangle BCA. The points D and E lie on the hypotenuse such that AD= DE=EB.
Also CD= 7, CE=9
What is the length of the hypotenuse AB?
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Guest Jan 24, 2021

+1

78

2

need help

Jennifer rode her bike at 12 miles per hour for 4 hours, then put her bike down and began walking at 2 miles per hour. Thomas started walking at 4 miles per hour along the same path at the same time that Jennifer started biking. When he reached the bike, read more ..

Guest Jan 24, 2021

+1

87

1

percent

We are making a juice. It contains 30% cherry juice, 60% orange juice and 10% water. Unfortunately, the prices have risen. The price of the cherry juice went up by 20% and price of the orange has risen up by 25%. By how many percent has the price risen read more ..

Guest Jan 24, 2021

0

123

1

+14

helppp

Find $1_6 + 2_6 + 3_6 + \cdots + 45_6$. Express your answer in base $6$.

ryan1207 Jan 24, 2021

0

66

1

Pls help :)

Let $f$ be defined by \[f(x) = \left\{ \begin{array}{cl} 3-x & \text{ if } x \leq 3, \\ -x^3+2x^2+3x & \text{ if } x>3. \end{array} \right.\]Calculate $f^{-1}(0)+f^{-1}(6)$.

My go at it:
First I attacked the $f^{-1}(0)$, read more ..

Guest Jan 24, 2021

0

104

4

HELP ASAP!

Let u and v be the solutions to Find

Guest Jan 24, 2021

-1

90

4

Help!

The roots of are a and b. Compute .

Guest Jan 24, 2021

0

75

1

Math

A diver descended at a constant rate of 17.34 feet every 3 minutes. Which of the following is true?

A. After one minute, the diver was at -5.78 feet.
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Guest Jan 24, 2021

0

85

1

math question

The figure shows an incircle of a triangle \(ABC\) with sides 6-12-17. Let \(P \) and \(Q\) be the points on the side lengths \(AB\) and \(AC\) respectively, such that \(PQ\) is tangent to the incircle. Find the perimeter of the triangle \(APQ\). read more ..

Guest Jan 24, 2021

+4

111

1

+266

How many values of x between 0 and 100, EXCLUSIVE, satisfy both of the following conditions? 1. x is a multiple of 4. 2. x is a multiple

How many values of x between 0 and 100, EXCLUSIVE, satisfy both of the following conditions?
1. x is a multiple of 4.
2. x is a multiple of 6.

MooMooooMooM ●

DewdropDancer Jan 24, 2021

0

77

1

linear inequality

Find a linear inequality with the following solution set. Each grid line represents one unit.

Guest Jan 24, 2021

0

93

1

need help

In the table, the sum of the numbers in each row, column and diagonal is the same. What is the value of P+Q+R+S?

Guest Jan 24, 2021

0

80

2

Help quick

The quadratic equation $2x^2 + bx + 18 = 0$ has a double root. Find all possible values of $b.$

Guest Jan 24, 2021

Jan 23, 2021

0

108

1

geometry

Suppose ABCD is an isosceles trapezoid with bases AB and CD and sides AD and BC such that CD > AB. Also suppose that CD = AC and that the altitude of the trapezoid is equal to AB. Compute AB/CD.

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Guest Jan 23, 2021

0

67

1

The equation of the line joining the complex numbers

The equation of the line joining the complex numbers -5+4i and 7+2i can be expressed in the form
for some complex numbers a and b. Find the product ab.

Guest Jan 23, 2021

0

57

0

least possible value

If -5 <= a <= -2 and 2 <= b <= 5, what is the least possible value of ? Express your answer as a common fraction.

Guest Jan 23, 2021

0

65

1

parabola

The vertex of a parabola is at (12,-4) and its axis of symmetry is vertical. One of the x-intercepts is at (18,0). What is the x-coordinate of the other x-intercept?

Guest Jan 23, 2021

0

89

1

help solving

If w, x, y, and z are real numbers satisfying:
w+x+y = -2
w+x+z = -4
w+y+z = 19 read more ..

Guest Jan 23, 2021

0

83

1

help plez

In the equation 1/j + 1/k = 2/3, both j and k are positive integers. What is the sum of all possible values for k?

Guest Jan 23, 2021

0

60

0

stuck on this problem

There is a point inside a regular hexagon. It forms six triangles with the vertices. The areas of the pink triangles are shown. Find the area of the green triangle.

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Guest Jan 23, 2021

+1

109

2

+294

help

Express this collection of points on the number line using interval notation.

notsmart2.0 Jan 23, 2021

0

84

1

polynomial question

The polynomial equation x^3 + bx + c = 0 where b and c are rational numbers, has 1 + sqrt(2) as a root. It also has an integer root. What is it?

Guest Jan 23, 2021

0

71

1

help with algebra

For what real values of a is x^2 + ax + 125 the square of a binomial? If you find more than one, then list the values separated by commas.

Guest Jan 23, 2021

0

86

4

number theory

N is a four-digit positive integer. Dividing N by 9 , the remainder is 5. Dividing N by 7, the remainder is 5. Dividing N by 5, the remainder is 1. What is the smallest possible value of N?
<read more ..

Guest Jan 23, 2021

0

49

0

function problem

Suppose that f(x) and g(x) are functions on R such that the range of f is [-5,5], and the range of g is [-2,2]. The range of f(x) times g(x) is [a,b]. What is the largest possible value of b?

Guest Jan 23, 2021

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