John can service a television and a cable box in one hour. It took him four hours yesterday to service two televisions and ten cable boxes. How many minutes does John need to service a cable box?
Answers
Answer 1
Answer:
For this item, we let x be the number of minutes he can service a television and y be the minutes he can service a cable box. Then, the system of linear equation that would best represent the given above is,
x + y = 60
2x + 10 y = (4)(60)
The values of x and y from the equations are 45 and 15 minutes, respectively. Therefore, John needs 15 minutes to service a cable box.
x + y = 60
2x + 10 y = (4)(60)
The values of x and y from the equations are 45 and 15 minutes, respectively. Therefore, John needs 15 minutes to service a cable box.
Related Questions
A person who weights 100 pounds on earth weights 16.6 lb. on the moon. a. which variable is the dependent variable and why? b. what is an equation that relates weight on earth to the weight on the moon? c. how much would a 185-pound astronaut weight on the moon? use an equation to explain how you know. d. how much would a man who weighs 50 pounds on the moon weigh on earth?
Rewrite each expression without absolute value bars |300|
3/4x-2/3=1/6x what number could you multiply both sides of the equation by so that the numbers in the problem are integers and not fractions
How do you wtite three hundred nine million fifty-eight thousand three hundred four
How to Factor 4x^2 -121
Rewrite each expression without absolute value bars |300|
3/4x-2/3=1/6x what number could you multiply both sides of the equation by so that the numbers in the problem are integers and not fractions
How do you wtite three hundred nine million fifty-eight thousand three hundred four
How to Factor 4x^2 -121
Answers
1 foot contains 0.3333... yards
so
26 foot contains how many yards=?
26 feet contain yards= 26*0.3333333....
=0.86666... yards
or simply 0.86667 yards. answer
so
26 foot contains how many yards=?
26 feet contain yards= 26*0.3333333....
=0.86666... yards
or simply 0.86667 yards. answer
Answers
Answer:
steps below
Step-by-step explanation:
26458900 ... sum of odd digits 2+4+8+0=14 ...(1)
sum of even digits 6+5+9=20 ...(2)
(2)-(1): 20-14=6 Not multiple of 11, nor 0
conclusion: Not divisible by 11
26458900 ... last 2 digits is "00", 00 or #00 are divisible by 4
conclusion: divisible by 4
Answers
In order to determine the value of the numbers, we can set up algebraic equations to solve. For this case, we need to set up two equations since we have two unknown numbers. We do as follows:
let x = first number and y = second number
From the problem statement, we set up equations.
Equation 1 - the numbers have a difference of 0.7
x - y = 0.7
Equation 2 - the numbers have a sum of 1
x + y = 1
Solving for x and y via substitution method,
x - y = 0.7
(1-y) - y = 0.7
1 - 2y = 0.7
-2y = 0.7 - 1 = -0.3
y = 0.15 or 3/20
x - 0.15 = 0.7
x = 0.85 or 17/20
Thus, the two numbers are 0.15 and 0.85.
let x = first number and y = second number
From the problem statement, we set up equations.
Equation 1 - the numbers have a difference of 0.7
x - y = 0.7
Equation 2 - the numbers have a sum of 1
x + y = 1
Solving for x and y via substitution method,
x - y = 0.7
(1-y) - y = 0.7
1 - 2y = 0.7
-2y = 0.7 - 1 = -0.3
y = 0.15 or 3/20
x - 0.15 = 0.7
x = 0.85 or 17/20
Thus, the two numbers are 0.15 and 0.85.
Answers
un-defined.........................
8 ÷ 0 = can not be divided. No number can be divided by 0.
Hope I helped ya!!xD
Hope I helped ya!!xD
Answers
To do this I must first determine what fraction of the circle is represented by the central angle 30°. Since there are 360° in a full circle, I can find the fraction of a circle by simplifying . The sector represents of the circle. To find the arc length, I now need to find the circumference of the entire circle.
7^x=13
Answers
1.318
Explanation:
Really what you're looking for is a value of x that, when 7 is raised to that power, will give you 13.
putting the equation in terms of f and g (any variables will do) :
7^x = f(x)
13= g(x)
using the rule if f(x)=g(x) then ln f(x) = ln g(x)
If any function f of x equals g of x then the natural log of f of x equals the natural log of g of x.
Therefore:
ln (7^x) = ln (13)
With logs, if there is something raised a power, the exponent can simply be moved to the front, so:
ln (7^x) = x * ln 7
note: *=multiplication
therefore your new equation is
x*ln 7 = ln 13
if you divide both sides by ln 7, you get that
x = 1.318123223
but you only need four sig figs (significant figures) so your answer is
x = 1.318
*Note = the answer is 1.318 only because those are the first four digits of the answer. I suggest looking up rules for sig figs if you do not know what they already are
HOPE THAT HELPS
_V :)
Explanation:
Really what you're looking for is a value of x that, when 7 is raised to that power, will give you 13.
putting the equation in terms of f and g (any variables will do) :
7^x = f(x)
13= g(x)
using the rule if f(x)=g(x) then ln f(x) = ln g(x)
If any function f of x equals g of x then the natural log of f of x equals the natural log of g of x.
Therefore:
ln (7^x) = ln (13)
With logs, if there is something raised a power, the exponent can simply be moved to the front, so:
ln (7^x) = x * ln 7
note: *=multiplication
therefore your new equation is
x*ln 7 = ln 13
if you divide both sides by ln 7, you get that
x = 1.318123223
but you only need four sig figs (significant figures) so your answer is
x = 1.318
*Note = the answer is 1.318 only because those are the first four digits of the answer. I suggest looking up rules for sig figs if you do not know what they already are
HOPE THAT HELPS
_V :)