60 minutes because in a hour there are 60 minutes and in seconds it took Sophia 3600 seconds
Answer:
C
Step-by-step explanation:
hope this helps i think it's right
Answer:
158%
Step-by-step explanation:
to convert decimal to percent, move decimal point 2 places back.
1.58 becomes 158%
You have to solve two equations simultaneously. The equations are:
.40c + .75d =$190
c + d = 300.
Multiply this second equation by -0.4 on both sides leaving you -0.40c -0.40d = 120. Subtract this new equation from the first and solve for d.
0.40c + 0.75d = 190
- 0.40c - 0.40d = 120
-----------------------------
0.35d = 70
Solve for d. 70/0.35d d = 200. Plug this number back into the original equation and c = 100.
Answer:
Step-by-step explanation:
Given that:
At point (5,3)
To find an equation of the tangent to the curve at the given point,
By without eliminating the parameter
t² + 5 = 4
t² = 4 - 5
t² = - 1
Then;
The equation of the tangent is:
y - 3 = -2x +10
y = -2x + 7
y = 2x - 7
By eliminating the parameter
x = 5 + In(t)
In(t) = 5 - x
The equation of the tangent is:
y - 3 = -2x +10
y = -2x + 7
y = 2x - 7