2 1/5 hours on homework for math = 2.2
Science homework took 1.1 hours to complete.
2.2+1.1= 3.3
7/8 of an hour is 50 minutes because we know that an hour is 60 minutes and every 10 minutes is a number for the numerator, if that makes sense.
3.3 of an hour plus 50 minutes, would equal 3.8 since the 3 after the point would be minutes. To convert into hours, since an hour is 60 minutes, we have 4 hours and 20 minutes he spent on homework over the weekend. That would be your answer! Hope this helped.
Five less than twice what negative number squared is 157 <- put into an expression
-5 + 2(-x^2) = 157
Now simplify:
-5 + -2x^2 = 157
-2x^2 = 162
-2x^2 - 162 = 0
2x^2 + 162 = 0
x^2 + 81 = 0
Answer:
-13/9 = x
Step-by-step explanation:
8/9 = x + 1/3(7)
~Simplify right side
8/9 = x + 7/3
~Subtract 7/3 to both sides
-13/9 = x
Best of Luck!
The main purpose is to finda formula that fits the relationship between the two variables the best. Like the line of best fit on a scatter plot.
A shadow measures 88 m: d = 88 m.
The angle : α = 32°
We will use trigonometry:
h / d = tan α
h / 88 m = tan 32°
h / 88 m = 0.62489
h = 88 m * 0.62489
h = 54.9885 m ≈ 55 m
Answer: The approximate height of a building is 55 meters.