Answer:
- 4
Step-by-step explanation:
(2*(Rationalize(9.7)-Rationalize(4.8x)))==Rationalize(61.2)-Rationalize(3.4)
Rationalize(18.4)-Rationalize(2.8x)
==Rationalize(57.8)
-Rationalize(2.8x)==Rationalize(57.8)-Rationalize(18.4)
x= 38.4÷-2.8
:x= -4
{[(8 - 3) * 2] + [(5 * 6) - 5]} / 5 =
= {[2 * 8 + 2 * (-3)] + 30 - 5} / 5 =
= [(16 - 6) + 25] / 5 =
= (10 + 25) / 5 =
= 35 / 5 =
= 7
Brackets make it look complex but it's not that bad at all :)
27) if a = 1/a
multiply both sides by a
a * a = 1/a * a
a^ 2 = 1
Answer is D) 1
28)
6 x 75 = 450
7 x 80 = 560
8 x 85 = 680
9 x 90 = 810
Total all students in class = 6 + 7 + 8 + 9 = 30 students
Total score of whole class:
450 + 560 + 680 + 810 = 2500
Average = 2500 /30 = 83.3 = 83 1/3
Answer is C) 83 1/3
Area i would pack probably water and good and my phone and the main things you need to survive would be good and water and a shelter
Step-by-step explanation:
use CAH method (Cos angle = adjacent/hypotenuse)
Given adjacent = 5
Hypotenuse = 12,
![\cos(x) = \frac{adjacent}{hypotenuse} \\ \cos(x) = \frac{5}{12} \\ x = {cos}^{ - 1} ( \frac{5}{12} ) \\ = 65.4deg(nearest \: tenth)](https://tex.z-dn.net/?f=%20%5Ccos%28x%29%20%3D%20%20%5Cfrac%7Badjacent%7D%7Bhypotenuse%7D%20%20%5C%5C%20%20%5Ccos%28x%29%20%20%3D%20%20%5Cfrac%7B5%7D%7B12%7D%20%20%5C%5C%20x%20%3D%20%20%7Bcos%7D%5E%7B%20-%201%7D%20%28%20%5Cfrac%7B5%7D%7B12%7D%20%29%20%5C%5C%20%20%3D%2065.4deg%28nearest%20%5C%3A%20tenth%29)