Based on the problem statement you can write two equations for the cost of tables (t) and chairs (c).
.. 6c +2t = 20
.. 3c +5t = 35
You can solve these by your favorite method to find the costs are
.. chairs cost $1.25
.. tables cost $6.25
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My favorite method is to use the graphing calculator at Desmos [dot] com. Many graphing calculators will solve equations like these either directly, graphically, or indirectly using matrix functions. If you want to solve them by "elimination," you can double the second equation and subtract the first to get
.. 8t = 50
Answer:
t = 1.57 sec
distance, d = 98.65 mm
Step-by-step explanation:
Given an angle of 540°
At 6 revolutions per second, which is the angular velocity.
Radius, r = 10 mm
We are asked to find the time and the distance.
To find the time, let's use the formula:
Where = angle in radians.
Converting 540° to radians, we have:
Therefore, from the formula, let's find t.
time = 1.57
To find the distance, we have:
d = 98.65 mm
Therefore, the time is 1.57 seconds and the distance is 98.65 mm
Hello!
The expression that represents Alisha's age is D. 2p - 3
Explanation:
An expression is a "mathematical phrase" and expression D. is simply saying that if you mutliply Paula's age by 2 and subtract 3 from that, you will get Alisha's age, which is why this expression is correct!
1. 14=y+11
y=3
2. 16=4x
x=4
3. 200=m-3
m=203