All Questions ⁺⁰230876 Questions

0

947

5

+4116

Anyone here good at English??!!

Anyone here good at English??!!

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NotSoSmart Jan 15, 2018

0

948

2

+956

More Physics :| ?

A photographer uses a camera lens with focal length of 50.0 mm to photograph a tree that is 4.60 m tall. She wishes to fill her 24.0-mm slide with the tree.

(a) How far from the lens should the film be?
(b) What is the magnification read more ..

Julius Jan 15, 2018

0

667

1

Absolut Value

Hello.
I have been having problems with absolute value equations with variables on two sides.

(1/2) | 3x-5 | = x+1 read more ..

Guest Jan 15, 2018

+1

821

2

+884

geo!!!!!

The terms are the first, second and third terms, respectively, of a geometric sequence. If is positive, what is the value of ?

ant101 Jan 15, 2018

+1

965

2

+884

help!

A certain organism begins as three cells. Each cell splits and becomes two cells at the end of two days. At the end of another two days, every cell of the organism splits and becomes two cells. This process lasts for a total of 8 days, and no cells die read more ..

ant101 Jan 15, 2018

+1

772

1

+884

number theory

It is currently What time will it be in seconds?

ElectricPavlov ●

ant101 Jan 15, 2018

0

822

1

+956

Physics?

A lens has a focal length of +20.0 cm, and a magnification of –4.00. What is the distance between the object and the image?

Julius Jan 15, 2018

+2

3885

5

+54

Math Help 2!!!

1.)
Given that \[ f(x) = \dfrac {1}{1 - \dfrac {1}{1 - \dfrac {1}{1 - x}}}, \] compute $(f(f( - 2)))^{ - 2}$. Express your answer as a common fraction.

2.) read more ..

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Jdaye Jan 15, 2018

+1

4493

2

+54

Math Please Help!!!

1.)
Let $d$ and $q$ be the roots of the quadratic equation $x^2+7x-4=0$. Find the value of $2d^2+19d+5q-8$.

2.) read more ..

Jdaye Jan 15, 2018

+1

771

2

+579

calc help

how do i work with logarithms in the web2.0 calculator?

OfficialBubbleTanks Jan 15, 2018

0

1048

5

+15

four 10 = 7?

a friend an i were talking abou tthe famous four 4s puzzle. he mentioned doing it with 10 instead. got them all except for 4 and 7. so, how?

i know the rest such as 1 = 10+10/10+10, and 3 = (10+10+10)/10 or 5 = (10*10)/(10+10) read more ..

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janets69 Jan 15, 2018

0

945

1

+15

what is square root of 0?

janets69 Jan 15, 2018

0

678

1

Help

Three of the four vertices of a rectangle are $(5, 11)$, $(16, 11)$ and $(16, -2)$. What is the area of the intersection of this rectangular region and the region inside the graph of the equation $(x - 5)^2 + (y + 2)^2 = 9$? Express read more ..

Guest Jan 15, 2018

0

1164

1

Help

Simplify $\displaystyle\frac{1-i}{2+3i}$, where $i=\sqrt{-1}$ is the imaginary unit.

Guest Jan 15, 2018

Jan 14, 2018

0

3839

1

Help

Express $\dfrac{30+19i}{4+9i}$ in the form $a + bi$, where $a$ and $b$ are real numbers.

Guest Jan 14, 2018

0

2110

1

The number of pairs of integers (x,y) that satisfy both x^2 + y^2 <_ 36 and y = x-4

The number of pairs of integers (x,y) that satisfy both x^2 + y^2 <_ 36 and y = x-4

Guest Jan 14, 2018

0

1978

3

The line y= -12/5x + 2 is exactly 3 units away from two other lines parallel to it

The line y= -12/5x + 2 is exactly 3 units away from two other lines parallel to it. The distance in units between the y-intercepts of these two other lines is.

Guest Jan 14, 2018

0

1633

3

A circle of radius 5 with its center at $(0,0)$ is drawn on a Cartesian coordinate system. How many lattice points (points with integer coor

A circle of radius 5 with its center at $(0,0)$ is drawn on a Cartesian coordinate system. How many lattice points (points with integer coordinates) lie within or on this circle?

CPhill ●●●

Guest Jan 14, 2018

0

1136

2

+90

Help with traction calculation

So, I recently decided to research how to calculate traction, specifically the traction of a car, so that I could have a mathematical rebuttal in conversations with people sayin that speed limits are just arbitrary, I ended up on engineeringtoolbox.com, read more ..

SomeoneSomewhere Jan 14, 2018

0

2170

2

For what value of $c$ will the circle with equation $x^2 + 8x + y^2 + 4y + c = 0$ have a radius of length 3?

For what value of $c$ will the circle with equation $x^2 + 8x + y^2 + 4y + c = 0$ have a radius of length 3?

ElectricPavlov ●●

Guest Jan 14, 2018

0

684

6

Two unknowns

Hello. Can anyone help me with this problem? I need to resolve but I can not at all. Please, I need the step-by-step resolution, or at least the beginning. I can not get out of the statement. Thanks.
6600+0,0075X = X * (1+y*(28/12))
Thanks. read more ..

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Guest Jan 14, 2018

0

561

1

question

what is 5x + 2 i'm really stuck

ElectricPavlov ●

Guest Jan 14, 2018

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