Answer:
<h2><em><u>
15x</u></em></h2>
Step-by-step explanation:
4x(2x+3)-5x
4x(8x+3)-5x
8x+12x-5x
8x+12x=20x
20x+-5x=15x
I really hope this helps plz let me know if its wrong! Im sorry if it is!
Answer: Last Option
Step-by-step explanation:
Cramer's rule says that given a system of equations of two variables x and y then:
For this problem we know that:
Solving we have:
Solving we have:
Solving we have:
Finally
Answer:
42 in
Step-by-step explanation:
12 x 3 = 36
1/2 foot = 6 in
36 + 6 = 42
#27.
First cross multiply
2 (2a-3) = 3 (a-1)
next use the distribute property on both sides
4a - 6 = 3a - 3
combine like terms, subtract 3a from both sides and add 6 to both sides
a = 3
#28
cross multiply
3x = 4, then divide both sides by 3
x = 4/3
#30
add 1/4 to both sides
3/x = 1/2 + 1/4, find a common denominator for the right side fractions
3/x = 2/4 + 1/4 = 3/4
therefore, x = 4
