You can say
x+y=5
x=5-y
You know the value of x, put it into the next equation.
3(5-y)-7y=19
15-3y-7y=19
15-19 = 10y
-4=10y
-4/10=y
-2/5=y
Put y value back into either equation to find value of x.
x+y=5
x-2/5=5
x=5+2/5
x=27/5
Therefore, x,y = (27/5, -2/5)
Hope I helped :)
Sales tax rate for the above sweater is charged at the rate of 8%
Step-by-step explanation:
Sweater’s cost initially- 28$
Cost of Sweater after 30.24$
Sales tax rate deducted?
Analysing the above-provided details we conclude that an increase in the cost was probably due to the addition of sale tax.
Sales tax charged= Cost of the sweater after charging- initial cost
= 30.24$-28$
=2.24$
Percentage of sales tax charged= (sales tax charged/initial cost) *100
Substituting the values of the sales tax and initial cost in the above-provided equation-
= (2.24/28) *100
=8%
Hence the Sales tax charged at the sweater was 8%
The sum of two rational numbers will always be rational. A rational number is a number that can be expressed in the form a/b with b ≠ 0. So, if we can prove that the sum of two rational numbers has a denominator, we have proven this statement. Since any rational number can be written as a/b, we can write sum of two rational numbers as a/b + c/d. We can make this ad+bc/bd. Since we proved that the sum of two rational numbers has a denominator, we also prove that their sum is rational.
Answer:
1/360
Step-by-step explanation:
10/3 = x / 12.....$ 10 to 3 lbs = $ x to 12 lbs
cross multiply
3x = 120
x = 120/3
x = 40....so it is gonna cost Sylvia $ 40 for the meat.
she plans on making 50 burgers......40 ($ worth of meat) / 50 (burgers) =
0.8....so for each burger, the meat will cost 0.80 or 80 cents <==
