Answer:
C) 3
Step-by-step explanation:
2x-y=3
-4x+2y=-6
4x+3y=11
-4x+2y=-6
4x+3y=11
5y=5
<u>y=1</u>
2x-y=3
2x-1=3
2x=4
<u>x=2</u>
2+1=<em><u>3</u></em>
Answer:
Total cost of covering the pedestal is <em>$12.54</em>.
Step-by-step explanation:
The pedestal is a <em>square prism </em>so top and bottom are of square shape.
Hence, we have here length = width
We know that the Total Surface Area of a Prism is:

Where <em>l</em> is length,
<em>w</em> is width and
<em>h</em> is height of prism
We know that here <em>w = l = 3 feet</em>
and <em>h = 4 feet</em>
Also, underside of pedestal is not to be covered.
The underside of pedestal is square type.
So,


Cost of cover per square foot = <em>$ 0.22</em>
Total cost of

Answer:
17.7 cm^2
Step-by-step explanation:
The formula for finding the hypotenuse using the pythagorean theorem is:

or, it can also be
. But I will be using the first formula.
We first plug in the "legs" to the equation:


Now, you find the square root of 314.

And finally, just round to the nearest tenths place!

Answer: (1) The temperature of the water after 20 minutes is 82.8°
(2) The temperature of the water will be 80° after 26.7 min
Step-by-step explanation: Please see the attachments below
Answer: D
Step-by-step explanation:
She uses a sample size of n=200, and 50% of all customers would actually buy coffee.