Find K such that the system of equations has 1 unique solution.

-2x -7y +1z=46x -5y -3z=14kx -2y -z=5 k=? I need help understanding how to solve this problem. Steps and answers would be very helpful. Thank you!

Word problem below in description

seven hundred grams of a radioactive material decays according to the formula A=700(2/3)^2, where t is measured in years. Find the amount present in 10 years. Round to the nearest one tenth of a gram  more

12/17/17

It's about sequences. Help me please !!

if an = 1,1,2,1,2,3,1,2,3,4,1,2,3,4,5,... find the value of a5060   How can I solve?

09/05/17

A school carnival brought in revenues of $14,600 and had costs of $6,300. What was the profit?

A school carnival brought in revenues of $14,600 and had costs of $6,300. What was the profit?

What is the equation of the horizontal asymptote of g(x)=4^x-6

Need to find the horizontal asymptote of the equation and the domain, range in interval notation

How to set up word problems

Simone peeled 14 potatoes in 1/5 hours. At this rate, how many potatoes can Simone peel in one hour?

The quotient of a number and 5​, minus 3​, equals seven fifths. Find the number.

help me find the answer please, quick!

09/05/17

what is the area of the stage if the radius of the stage is 4 meters

a circular wooden stage  

Find the partial decomposition for the rational expression:

15/(x^2-5x) is the rational expression. I got as far as 15/(x(x-5)). I don't know where to go from here.

PLEASE HELP exponential and log word problem

Bailey is saving money to buy a new car in 2 years. Find the amount she needs to invest now in a certificate of deposit that pays 10 percent compounded continuously in order to have $5000 for her... more

09/05/17

while on a 40km bike ride, a cyclist rides the first 20km at a speed of 20km/hr.

while on a 40km bike ride, a cyclist rides the first 20km at a speed of 20km/hr. what speed is required for the final 20km if the average speed for the trip was 10km/hr

09/05/17

What expression represents the quotient of 6 more than twice a number and the number

The quotient of 6 more than twice a number and the number 

how long will it take a car to travel 400 mi at an average rate of 50 mph

how long will it take a car to travel 400 mi at an average rate of 50 mph

The endpoints of a diameter of a circle are ​A(2​,1​) and ​B(8​,9​). Find the area of the circle in terms of π.

there is nothing else you need to know about this problem

09/04/17

Please help with this equation

2/x-3 + 1/4 = 2

09/04/17

Express the number in the form a/b, where a and b are integers.

(0.008)∧−2/3

09/04/17

if 414 gallons of water pass by every minute, how many gallons of water will pass by in 15 minutes?

Trying to figure out how many gallons of water pass by per minute, for chemistry equation

09/04/17

The distance from X to 0 is no more than 48

Help translate it  to an inequality  

09/04/17

why does a satellite (a moon) accelerate as it travels around the planet?

the moon travels around our planet so why does is it accelerating.

08/26/17

5 less than half a number is 40

what is 5 less than half a number is 40 as an equation
1 2 4 6 7 8 9

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