Answer:
(47+21√5)/2
Step-by-step explanation:
Given the expression
7+3√5/7-3√5
= 7+3√5/7-3√5 * (7+3√5)/(7+3√5)
= 49+21√5+21√5+9(5)/[7(7)-9(5)]
= 49+42√5+45/49-45
= 94+42√5/4
= 2(47+21√5)/4
=(47+21√5)/2
Hence the required expression is (47+21√5)/2
Cost of each gallon of paint = x=$17
and Cost of each brush = y=$5.5
Step-by-step explanation:
Let Cost of each gallon of paint = x
and Cost of each brush = y
So, You purchase 8 gal of paint and 3 brushes for $152.50 can be written as:
you purchase 6 gal of paint and 2 brushes for $113.00 can be written as:
solving these equations to find value of x and y
Multiply eq(1) with 2 and eq(2) with 3
So, value of x=17
Putting value of x=17 into eq(1)
So, value of y= 5.5
Cost of each gallon of paint = x=$17
and Cost of each brush = y=$5.5
Keywords: algebraic word problems
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0.6666 (repeating) x 0.75 = 0.5
0.6666 (repeating) / 0.75 = 0.8888888 (repeating)
A way you can set this up is like this.
1 / 2.75 = x / 3.66667
Solve for x by cross multiplying
x = 1.333
or
1 and 1/3 cups
Answer:
10
Step-by-step explanation:
You can do 5+5=10 or you can do 5x2=10. You can also do it this way but it is the longer way 1+1+1+1+1+1+1+1+1+1.