Answer:
8km
Step-by-step explanation:
The three points form a right-angled triangle with 15km as the height and 17km as the hypotenuse.
To find the distance between Lowell and the port which is the base use the pythagorean theorem.
=√17² - 15²
=8km
Yolanda's daily salary is $225
Step-by-step explanation:
The given is:
- Yolanda gave 20% of her daily salary to taxes
- She then put 10% of her remaining salary into her savings
- She is left with exactly $162
We need to find Yolanda's daily salary
Assume that Yolanda's daily salary is $x
∵ Yolanda gave 20% of her daily salary to taxes
∵ Yolanda's daily salary is $x
∴ The taxes = 20% × x
∵ 20% =
= 0.2
∴ The taxes = 0.2 × x = 0.2 x
∴ The remaining of her salary = x - 0.2 x = 0.8 x
∵ She put 10% of her remaining salary into her savings
∴ The money in her saving = 10% × 0.8 x
∵ 10% =
= 0.1
∴ The money in her saving = 0.1 × 0.8 x = 0.08 x
∴ The remaining of her salary = 0.8 x - 0.08 x = 0.72 x
∵ She is left with exactly $162
∴ The remaining of her salary = $162
∵ The remaining of her salary = 0.72 x
- Equate her remaining salary
∴ 0.72 x = 162
- Divide both sides by 0.72
∴ x = 225
Yolanda's daily salary is $225
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Simply divide the price by the number of ounces to get the price per oz.
$1.39 ÷ 12 = about $.1158 cents per oz
$2.79 = 24 = about $.11625 cents per oz.
By a very small amount the $1.39 bottle is a better deal.
You could also think that $1.39 for 12 oz is $2.78 for 24 (I doubled both numbers)
$2.78 for 24oz is a drop cheaper than $2.79 for 24 oz so $1.39 is a slightly better buy.
Answer:
-9
Step-by-step explanation:
Assume they are both positive numbers.
12 - 3 = 9
Imagine the numbers both on a lined number plot.
The difference is -9.