Answer:
12
Step-by-step explanation:
The angle equals 90 degrees so (8*12-6) would equal 90
hopefully i helped
Answer:
Dave is 18 and his sister is 6.
Step-by-step explanation:
If you do 38 -7x2 you can work out the combined ages of them now which is 24 (you have to do 7x2 because there are two of them and its seven years in the future). Then you can work out their ages using a ratio. Dave’s age : his sister’s age is 3:1 so if you divide 24 by 4 (3+1 = 4 so your can work out one portion of their age) you can find out how old the sister is which is 6. Times that by 3 to get Dave’s age which is 18. A formula for this (where x is his sisters age) would be 3x=38-7x2 which cancels down to 6.
Answer:
$21.60
Step-by-step explanation:
Answer: use the Pythagorean theorem a2+b2=c2 substitute the numbers in
7 squared + 3 squared = c squared so 7x7=49 and 3x3=9 add 49 and 9 which equals square root of 58 since that is not a perfect square you take square root of 58 and you simplify and that gives you 7.62
Step-by-step explanation:
I showed on top
Answer:
1.0 - 0.6 = 0.4 (1.0 and 0.6)
OR
12.6 - 12.2 = 0.4 (12.6 and 12.2)
