Multiply each term in the parentheses by 3. Your answer is 6a - 12b
Luis is wrong because 8 to the third power is not 24, but is 512. He multiplied 8 by 3 instead of doing 8x8x8, so Luis made an incorrect claim.
Just divide 220 by 4 to get the answer. So the answer is 55.
Explanation:
220/4=55
If the drive needs to be completed in 4 hours and the drive is 220 miles then how much mph do they need to go
Miles/hours=miles per hour
Brainliest my answer if it helps you out
The cost to equip all the stations in the chemistry lab is calculated as: $393.75.
<h3>How to Calculate Total Cost?</h3>
In this scenario, we are given the following:
Total number of stations = 21 stations
Length of rubber tubing each of the stations in the chemistry lab needs = 5 feet
Total length of rubber tubing needed for all stations in the chemistry lab = 21 × 5 = 105 feet
Cost of 1 rubber tubing = $6.25 per yard
Convert 5 feet to yard:
1 yard = 3 feet
x yard = 5 feet
x = (5 × 1)/3
x = 5/3 feet.
So, the cost of 1 rubber tubing = $6.25 per 5/3
Cost of total length of tubbing needed = (105 × 6.25)/5/3 = (105 × 6.25) × 3/5
Cost of total length of tubbing needed = $393.75
Therefore, the cost to equip all the stations in the chemistry lab is calculated as: $393.75.
Learn more about the How to Calculate Total Cost on:
brainly.com/question/2021001
#SPJ1
Answer:
Step-by-step explanation:
Since we are in quadrant 2, sine is positive. Since sine is positive and cosine is negative, then tangent is negative.
Now I'm going to find the sine value of this angle given using one of the Pythagorean Identities, namely 
.
If given 
, then we have 
by substitution of .
Let's solve:
for 
.
Subtract 4/9 on both sides:
Simplify:
Square root both sides:
===========
Multiplying top and bottom by 3 gives:
I'm going to move the factor of -1 to the top:
