Answer:
.
Step-by-step explanation:
To start out the equation you know that they both spent the same. The right of the equal sign is what Tanya spent and to the left was what Tony spent.
3x = 4(x-2.25)
If you solve it you get x = $9
Now that is what the cost was for each item that Tanya bought. The number in parenthesis() is what Tony spent on each item.
Plug in 9 to x in (x-2.25)
You should get $6.75 for the amount of each item Tony spent.
Answer:
240
Step-by-step explanation:
4 x 2 x 3 = 24 x 10 = 240 milimeters
(5,-5)
Answer:
a) Standard deviation: 3 bluberries
b) We assume, to apply this rule, that the distribution of blueberries per muffin has a bell-curve distribution, approximately normal.
Step-by-step explanation:
We know that the number of blueberries in a blueberry muffin baked by EarthHarvest Bakeries can range from 20 to 40 blueberries.
a) If we use the Empirical Rule 68-95-99.7, specifically the last term, we have that:
- 99.7% of the data will fall between 3 standard deviations from the mean.
Then, if we consider the range of 20 to 40 containing 99.7%, we can calculate the standard deviation as: