Answer:
140?
Step-by-step explanation:
The answer is 6133.5! Hope this helps!
Answer: C.
Step-by-step explanation:
First, notice eqn 2 asks for a positive number to add to 8 and get 2. Eliminate all choices which claim eqn 2 has a solution.
Second, to eliminate A, add 5 to both sides and notice the absolute value isn't being asked to be negative.
To check, verify
|4 × 3 − 3|− 5 = 4
|4 × (-1.5) − 3|− 5 = 4
Step-by-step explanation:
Recall that
so we can rewrite the equation above as
![\log 10 + \log 2 = \log (x + 1)](https://tex.z-dn.net/?f=%5Clog%2010%20%2B%20%5Clog%202%20%3D%20%5Clog%20%28x%20%2B%201%29)
Also recall that
so the left-hand side becomes
![\log [(10)(2)] = \log (x + 1)](https://tex.z-dn.net/?f=%5Clog%20%5B%2810%29%282%29%5D%20%3D%20%5Clog%20%28x%20%2B%201%29)
or
![20 = x + 1 \Rightarrow x = 19](https://tex.z-dn.net/?f=20%20%3D%20x%20%2B%201%20%5CRightarrow%20x%20%3D%2019)
<u>4x² - 27x - 28</u> is the answer
Step-by-step explanation:
As per question,
(5x² + 23x - 7) - (x² - 4x + 21)
Removing the parentheses,
→ 5x² + 23x - 7 - x² + 4x - 21)
Now reorder and gather the like terms,
→ (5x² - x²) + (23x + 4x) + ( -7-21 )
Collecting the coefficients of like terms,
→ (5-1)x² - (23+4)x + ( -7-21 )
Calculating them now, we get,
→ <u>4x² - 27x - 28</u>
So, (5x² + 23x - 7) - (x² - 4x + 21) <em>= </em>4x² - 27x - 28