Equality of Complex Numbers

Find exact x, y such that    a) (x+2i)(y-i)= -4-7i    b) (x+i)(3-iy)= 1+13i 

Sets and Counting

Suppose there are three pitchers and three catchers at a baseball training camp. In how many ways can the six players be seated in a row if no one sits next to someone who plays the same position?

11/17/17

If 15 Superscript negative x Baseline equal 7, what does 15 Superscript 2x equals?

I don't even know where to start

11/17/17

If 9 Superscript x Baseline equals 8​, what does 9 Superscript negative 2x ​equal?

9^x = 8 what does 9^-2x equals. 

11/17/17

If 6 Superscript negative x Baseline equals 13​, what does 6^2x ​equal?

I need help I don't even know where to start

11/17/17

What is the exponential equation for a line that goes through (4,8) and (6,128)

Solved with logarithms

11/16/17

Describe the possible lengths of the third side of the triangle given that the lengths of the other two sides are 12 feet and 18 feet.

I am not sure how to figure out this problem, may someone please assist in helping me? I am very troubled by this 

11/16/17

How do you rewrite e4=x in logarithmic equation?

How do you rewrite e4=x in logarithmic equation?

11/16/17

Distance between two lines using slope intercept form

One line; -x+y=0, and another line; y=x+3 I must find the distance between these points   Geometry

X + rooty = 7, root x + y = 11. Find x and y

Is this a quadratic equation or simultaneous equation 

csc theta= -5/2, 3pi/2< theta< 2 pi

how do i solve this? 

Please help me with this use the proving mathematical Induction

7•8+7•82+7•83+....+7•8n=8(8n-1)

11/13/17

Find the length of the shorter leg of a right triangle if the longer leg is 8 feet more than

the shorter leg and the hypotenuse is 8 feet less than twice the shorter leg.     The length of the shorter leg is __

what is the vertical asymptote of y=x-3/x^2-5x+6

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11/13/17

Write an equation of a parabola that opens upward, has a vertex at the origin, and a focus at (0, 1).

trying to get past gradpoint 

11/13/17

Can you draw two quadrilaterals each having two 130 degree angles and two 50 degree angles that are not similar? Justify your answer.

 I'm doing this lesson in Math called "Similar Figures" and I don't understand this question, so I would like some help if you don't mind.

11/13/17

A binary number is a number that consists of only the digits 0 or 1.

A binary number is a number that consists of only the digits 0 or 1. How many distinguishable binary numbers can be formed from the binary number 1111100011111000?Use all of the digits, realizing... more

11/13/17

Brain teaser

From a basket of mangoes when counted in twos there was one extra,counted in threes there were two extra,counted in fours there were three extra, counted in fives there were four extra, counted in... more

11/13/17

The sum of the dimensions of a cuboid is 21 cm . if its diagonal is 7√5 cm find its surface area.

PLEASE MENTION THE STEPS BELOW

11/12/17

What 2 numbers add to get -13 and multiply to get -48?

Diamond prblems

11/12/17

Find the slope of the line passing through the points (-9,8) and (-9,-4)

its asking me to find the slope of the lines passing through the points. 

truck leaving St. Louis

A truck leaves St. Louis Missouri traveling north on I 55 at an average rate of 47 mph. One hour later a bus leaves St. Louis traveling south on I 55 at an average rate of 54 mph. How long after... more

11/11/17

Assume that the range of f(x) = arcsec(x) is [0, π/2) ∪ [π, 3π/2) when finding the exact value of the following. arcsec(− 2 )

Please answer as soon as possible! Thank you so much!

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