Answer:
x = -3
Step-by-step explanation:
1. 1.8 - 3.7x = -4.2x + 0.3
<u>-0.3 -0.3</u> (subtract -0.3 from both sides)
2. 1.5 - 3.7x = -4.2x
<u> +3.7x +3.7x</u> (add 3.7x to both sides)
3. <u> 1.5 </u> = <u>-0.5x</u>
-0.5 -0.5 (divide by -0.5 on both sides)
-3 = x or x = -3
42 students can play all sports
Answer: x = 4
Step-by-step explanation:
- Add the like terms. The new equation should be 8x - 6 = 26
- Add 6 on both sides of the equation. The equation simplifies to 8x = 32.
- Divide 8 on both sides of the equation. The solution is x = 4.
Answer:
g(n) = 180 - 20(n-1)
Step-by-step explanation:
Since your has its g(1) value as 180, we put 180 in front. Then, we subtract 20 multiplied by n-1, n being the sequence number. For example, if the recursive function has recursed 3 times, we do 3-1, which is 2. We multiply 2 with 20, which is 40. Finally, we subtract 40 from 180, which is 140. This equation is equivalent to g(3) = 180 - 20(3-1). When the sequence has g(3), we clearly see the answer is 140. When we look at the sequence, the third number is 140, proving this equation correct.
Answer:
The sales for the store 7 days after the end of the advertising campaign is
$3849.74
Step-by-step explanation:
From the question we are told that
The daily sales on the end of campaign day is = $8,500
The daily sales three days after end of campaign day is = $ 5,100
The usual day sales of the store is = $ 3,500
Generally the Newton's Law of Cooling (Heating). equation is mathematically represented as
Here t is the number of day after the campaign ended
Now substituting values to obtain the constant k
For t = 3
=>
=>
=>
So at t = 7
substituting values
$3849.74