Answer:
Step-by-step explanation:
Let A = Adam, B = Betty
Adam and Betty purchased a printer together for $258.
This means we can say A + B = 258.
We are also told Adam paid $18 less than twice Betty.
You can write this as:
Adam = 2 x Betty - 18
A = 2B - 18
Substitute "A" into the A + B equation and you get:
A + B = 258
2B - 18 + B = 258
3B - 18 = 258
Add 18 to both sides.
3B = 258 + 18
3B = 276
Divide both sides by 3 to find B
B = 276/3 = 92 (This means Betty paid $92).
Since the total that they paid together was $258.
This means Adam pays the Total - How much Betty paid
Adam = 258 - 92 = $166
Answer:
x + 4 - 3√2 and x + 4 + 3√2
Step-by-step explanation:
When other methods seem to difficult to apply, try using the quadratic formula:
Here a = 1/2, b = 4 and c = -1.
Then the "discriminant" is b^2 - 4ac, or
(4)^2 - 4(1/2)(-1), or 16 + 2 = 18
Then the roots are:
-4 ± √18, or -4 ± 3√2
and thus the factors are x + 4 - 3√2 and x + 4 + 3√2
x = ---------------------
Answer:
<h3>Part A</h3>
Net change is the change compared to zero level
- From positive 2.2 feet to negative 2.4 feet
<h3>Part B</h3>
The distance between the elevations
<h3>Part C
</h3>
<h3>Part D
</h3>
<h3>Part E
</h3>
Positive elevation brings the level close to the deck
<h3>Part F</h3>
Negative elevation takes the level apart from the elevation of the surf shop
- 10 - (-2.4) = 12.4 feet
- The surf shop was higher
Answer: A = x^2/16 + (5 - x/4)^2 > 20.5
Hope this helped.
I think it’s questions 1 and 2
