15x - y = - 6.....15x + 6 = y...so we sub in 15x + 6 in for y on the other equation
5x - 3y = -13
5x - 3(15x + 6) = -13 <== the new equation
Answer:
Appliance store has better rate than department store.
Step-by-step explanation:
Appliance store gives 2 for $95
So price of 1 will be = 95/2 = $47.5
Department store sells 5 for $250
So price of 1 will be = $250/5 = $ 50
So as a buyer we are in profit when buy from appliance store because we are at a profit of $2.5 per lamp.
I hope it will help you!
An irrational number is a number than can't be put into a fraction. and is usually REALLY long number with decimal and does not have repeating numbers
A. 3/4 = 0.75 It is a fraction
B. √225 = 15 It is a whole number
C. √17 = 4.1231056245617.... It is an irrational number
D. 175.2845 It is not irrational and can be put into a fraction (
First we need to know how many miles per hour they drove the first time. This would be found by division. 168/3.5=48
Then we need to add 5 miles per hour for the average.48+5= 53
Next we need to multiply 2 1/4 by the new miles per hour 53*2.25=119.25
After that we need to know how many miles they drove 119.25+168=287.25 miles.
Finally to get an improper fraction we need to change 287.25 miles to it.
We already have 1/4 for .25 so we multiply 287 by 4 and add it to the 1/4 we already have and it makes it out to be 1149/4
Hope this helps!
Answer:
b = 10
Step-by-step explanation:
In this question we have identified that b ( or short leg ) = 5 brainly.com/question/23589050
In the image provided in that question the, we are told that the hypotenuse = short leg times 2
If we have identified that the short leg = 5 then the hypotenuse = 5 * 2 which is equal to 10
