A spider ate 25% more bugs this month than last month.The spider ate 8 bugs last month. How many bugs did the spider eat this mo
2 answers:
Answer:
The spider ate 10 bugs this month.
Step-by-step explanation:
A spider ate last month = 8 bugs
If the spider ate more bugs this month = 25%
First we calculate 25% of 8 (last month's value)
= × 8
= 0.25 × 8 = 2
The spider ate 2 more bugs than the last month.
So this month spider ate = 8 + 2 = 10 bugs.
The spider ate 10 bugs this month.
You might be interested in
Answer:
The tax Jenna and Richie pay on the gifts is <u>$3.85</u>.
Step-by-step explanation:
Given:
Cost of scarf = $12.45.
Cost of necklace = $35.65.
State tax charges sale tax = 8%.
Now, to find the sales tax paid on the gifts.
So, adding the price of the gifts:
Thus, the total amount of the gifts = $48.10.
Now, getting the sales tax the state charges:
<em><u>The tax nearest to cent = $3.85</u></em>
Therefore, the tax Jenna and Richie pay on the gifts is $3.85.
Answer:
0.7698
Step-by-step explanation:
If you call your random variable , then what you are looking for is
because you want the probability of being <em>between 87 and 123.</em>
We need a table with of the normal distribution. But we can only find the table with and
. Because of that, first we need to <em>normalize </em>our random variable:
(you can always normalize your variable following the same formula!)
now we can do something similar to our limits, to get a better expression:
And we transform our problem to a simpler one:
(see Figure 1)
From our table we can see that (this is represented in figure 2).
Remember that the whole area below the curve is exactly 1. So we can conclude that (because 0.8849 + 0.1151 = 1). We also know the normal distribution is symmetric, then
.
FINALLY:
