These are ways the equation for speed are commonly expressed:
speed = distance/time
v = s/t or v = (ds/dt)
Answer:
(a) Because the expression is not an equation
(b) Because the expression is an equation
Step-by-step explanation:
Solving (a): a + 2
The above expression can assume any value for a because it is not an equation.
Take for instance:
a = 2;
<em>The reason for this is because the expression is not an equation</em>
Solving (b):
The above expression can assume only value for b, and the value is:
This means that only will make the equation true.
<em>The reason for this is because the expression is an equation</em>
Answer: = 16807
Step-by-step explanation:
7 x 7 x 7 x 7 x 7 = 16807
(7)^5 = 16807
The correct answer is <span>904.78 ft^3 ("^3" means cubed).
Hope this helped! :)</span>
Given:
The ratio of the amount of money Kate has to that of Nora is 3 : 5.
After Nora gives $150 to Kate, the ratio of the amount of money Kate has to that of Nora becomes 7 : 9.
To find:
The sum of money Kate had initially.
Solution:
Let the initial amount of money Kate and Nora have are 3x and 5x respectively.
After Nora gives $150 to Kate, the ratio of the amount of money Kate has to that of Nora becomes 7 : 9.
The amount of Kate = 3x+150
The amount of Nora = 5x-150
Now,
Divide both sides by 8.
Putting x=300 in 3x, to get the amount of money Kate has initially.
Therefore, the Kate initially had $900.