Step-by-step explanation:
2x - 5 = 7
2x = 7 + 5
2x = 12
x = 12 / 2
x = 6
Hope it will help :)
Answer:
d = 520 cm^3 e = 1717.66 cm^2
Step-by-step explanation:
d) The area of the face triangle is 40 and multiply that with the length, 13 to get 520.
e) The volume of the half circle is 190.85 and the volume of the cone is 1526.81 and add them
Answer:
a) It cannot be concluded at the 99% confidence level that there is actually a difference between the true mean comfortable room temperatures for the two groups.
Step-by-step explanation:
-3x + 7x = -12
You need to add like terms.
4x = -12
Then, you need to divide both side by 4.
x = -3
So the answer is:
A) x = -3
