-4*x=-156 <--- Given
x=39 <--- Divide by -4
Hope this helps!
Answer:
Step-by-step explanation:
<u>Use midpoint formula to calculate x or y- coordinates.</u>
- A(x₁, y₁), B(x₂, y₂)
- M = ((x₁ + x₂)/2, (y₁ + y₂)/2)
Multiply the 6 (the denominator), and the 13 (the whole number). To this product, add the 5 (the numerator).
<span>It then gives you 83, which is now the numerator for the improper fraction, and use the 6 as the denominator for the improper fraction.
Therefore the mixed number (13 6/5) is now 83/6 written as an improper fraction.</span>
$13.43
Given: To mail a first-class letter, it costs $0.13 for one ounce. From then, the additional ounce's cost $0.7.
Hence, equation can be created:
y = 0.13 + 0.7(x) where 'y' is <u>total cost</u>, 'x' is <u>additional ounces</u>
<h3>Here,</h3>
<u>additional ounces</u>: 19.89 - 1 = 18.89 ounces 19 ounces
<u>Total cost</u>: y = 0.13 + 0.7(19) ⇒ y = 13.43