Answer:
x = 31
Step-by-step explanation:
AC=BD
3x+7 = 131-x
Subtract 7 from both sides
3x = 124-x
Add x to 3x
4x = 124
Divide by 4
x = 31
Check:
3(31)+7 = 131 - 31
Mulitply 3 times 31 / subtract 131 and 31
93+7 = 100
Add 93 to 7
100 = 100
Answer:
13x+14y+12y/19x+4
Step-by-step explanation:
Square root of 15 because you don't know what know is going to go after it, unlike the others where you can guess the numbers that goes after it
Answer:
0.75
Step-by-step explanation:
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