Answer:
180 min
Step-by-step explanation:
The first thing is to get the number of days in two weeks that he would read the book, since he only does it when he goes to school. School goes from Monday to Friday, that is to say 5 days, how two is two weeks would be a total of 10 days. Mathematically, it would be the equation, where X would be the number of minutes inside the parentheses and the minutes read before and after school:
X = 10 * (10 + 8)
Solving:
X = 180
In other words, in two weeks he has read a total of 180 minutes.
Do the formula length times width times height.
Then, round like you normally would!
And for the second one, just multiply 2.5 x 6!
Answer:
B. x = 7; AB = 9, AC = 12
Step-by-step explanation:
12/4 = (x + 2)/(x - 4) (similar triangles theorem)
3 = (x + 2)/(x - 4)
Cross multiply
3(x - 4) = (x + 2)
3x - 12 = x + 2
Collect like terms
3x - x = 12 + 2
2x = 14
x = 14/2
x = 7
✔️AB = x + 2 = 7 + 2
AB = 9
✔️AC = (x + 2) + (x - 4) = (7 + 2) + (7 - 4)
AC = 9 + 3
AC = 12
Step-by-step explanation:
.....because the coefficient of x is 2, a positive number.
