Answer:the number of books that Sally sold is 21
Step-by-step explanation:
Jack sold 126 books. Joe sold 1/2 as many books as many books as jack. This means that the number of books that Joe sold would be
1/2 × 126 = 63
Sally sold 1/3 as many books as joe. This means that the number of books that Sally sold would be
1/3 × 63 = 21 books.
A) 55 degrees.
The two red slashes show that both angle x and the 55 degree angle are congruent.
A total of 1369 students enrolled this year
<h2>
Answer:</h2>
The number of kilograms a 19 m beam can support is:
378.9474 kg
<h2>
Step-by-step explanation:</h2>
It is given that:
The weight W that a horizontal beam can support varies inversely as the length L of the beam.
Let k denote the constant.
This means that the weight W and Length L is related as:
Suppose that an 8 dash m beam can support 900 kg.
This means that L=8 and W=900
Then,
Now , we are asked to find the value of W when L= 19
i.e.
Answer:
60%
Step-by-step explanation:
We have that there are 6 75-W bulbs, that is to say these are the favorable cases. The total cases would be the sum of all the bulbs that would be:
4 + 5 + 6 = 15
Therefore the probability of at least 1 75-W bulbs is:
6/15 = 0.4
Now we must find the probability of at least 2 75-W bulbs, which is like this:
P (examine at least two 75-W bulbs) = 1 - P (examine at most one 75-W bulbs)
Replacing:
P (examine at least two 75-W bulbs) = 1 - 0.4 = 0.6
It means that the probability of least two 75-W bulbs is 60%
