Answer:
42. 25°F
43. 5 feet
44. $4400
Step-by-step explanation:
42.
Temp at 5PM = 20
Temp at 10PM = -5
To find the number of degrees it changed (fell), we would need to subtract the latter temperature from the first one. So, it is:
20 - (-5)
This is basically 20 + 5, which is 25 degrees.
Also, you can think, from 20 to 0, it falls 20 degrees. From 0 to -5, it falls again 5 degrees. So in total it is 20 + 5 = 25 degrees
43.
Length is given as 9.5
The length is 1.9 TIMES the width
We let the width be "w", thus we can say:
Length is 1.9 TIMES width
9.5 is 1.9 * w
"is" translates to "=", in algebra, so we can write:
9.5 = 1.9 * w
Now, we can solve for w:
[tex]9.5 = 1.9 * w\\9.5=1.9w\\w=\frac{9.5}{1.9}\\w=5[/tex]
The width is 5 feet
44.
Current Balance = 4708
This balance is 308 MORE THAN what it was 4 years ago.
We can let the balance 4 years ago be "x".
So, we can say:
4708 is 308 MORE THAN x
In equation, we can write:
4708 = 308 + x
Now, we can solve for x:
[tex]4708 = 308 + x\\x = 4708-308\\x=4400[/tex]
hence,
The balance 4 years ago was $4400
