Answer:
the equation used for the dollar amount earned is r= 10 and p=76
divide 304 by 4 and 100 by 10
Algebraic expression with like terms and parentheses: 5x+42x-49+(22y-11y)
Bold: like terms
same algebraic expression without like terms and parentheses: 47x-49+11y
* 5x+42x= 47x
*22y-11y=11y
Answer:
102 and 109
Step-by-step explanation:
create an equation to solve:
(x-7) + x = 225
2x -7 = 225
<u> +7 +7</u><u> </u><u> </u> add 7 to both sides
<u>2x</u> = <u>218</u>
2 2 divide both sides by 2
x = 109
<u>109 is the first number</u>
then you solve for the other number
x-7= ?
109 - 7 = 102
<u>102 is the 2nd number</u>
Answer:
x = -2 , y = 4
Step-by-step explanation:
given:
5x + 2y = -2 <em>*4</em>
4x + 3y = 4 <em>*5</em>
Solving simultaneously,
20x + 8y = -8 ....eq 1
(-) 20x +15y = 20 ...eq 2
.............................................
-7y = -28
y = -28 / -7
y = 4
using equation 2,
20x +15(4) = 20
20x = -40
x = -2