Answer:
x=5
Step-by-step explanation:
four times two x gives you 8x. 4 times 4 is 16. Subtract 16 from both sides you get 40. divide 8x by 8 and the eights cancel out. Divide 40 by 8 and you get 5
Answer:
x<8
Step-by-step explanation:
x+7<15
x<15-7
x<8

Answer: The − sign here means subtraction. However, recall that 4 − 7 can be rewritten as 4 + (−7), since subtracting a number is the same as adding its opposite.
Step-by-step explanation:
Answer:
~5 feet.
Step-by-step explanation:
assuming that it is a right triangle. if a=5 and c=7 then b the other leg is equal to the square root of c squared minus a squared. which equals about 4.9