Answer:
d= (-1)
Step-by-step explanation:
13=8-5d
13-8=-5d
5=-5d
1=-d
-1=d
thats it
Use the internet it’s there
Answer:
2
Step-by-step explanation:
Because the people were randomly assigned to one of the two groups, there is a randomness to both groups making them the same. The group that doesn't get the cream is a control group so any differences observed between the control and the group being tested would be due to the cream.
Answer:
x = 4. (Answer B)
Step-by-step explanation:
Combine the x-terms on the left side: -x + 3x = 2 + 6.
Simplifying further, 2x = 8, or x = 4. (Answer B)
Answer: D. 44
Step-by-step explanation:
Here, we need to know the concept of trigonometry.
- Sine (sin) = Opposite/Hypotenuse = O/H
- Cosine (cos) = Adjacent/Hypotenuse = A/H
- Tangent (tan) = Oppostie/Adjacent = O/A
-----------------------------------------------------------------------------
Given
- The adjacent side of angle x and the hypotenuse.
- We are going to use Cosine.
<u>Solve</u>
cos (x) = 15/21
x = cos⁻¹ (15/21)
x ≈ 44
Hope this helps!! :)
Please let me know if you have any questions