Answer:
he will select about 5 blue marbles
Step-by-step explanation:
There are 50 different possible debating teams that could be selected as obtained using COMBINATION.
Since there are EQUAL number of juniors and seniors ;
Then we have 5 of each.
Here, the order of arrangement DOES NOT matter, Hence, we use COMBINATION
since the team MUST contain 4 SENIORS and 2 JUNIORS
4 Seniors from 5 = 5C4 = 5
2 Juniors from 5 = 5C2 = 10
Hence, (5C4 * 5C2) = 5 * 10 = 50
Hence, there are 50 different possible debating teams that could be selected.
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brainly.com/question/8018593
It’s b because you are just moving the decimal over one
Answer:
C. 3x^2 -13x + 7
Step-by-step explanation:
Lets start in the ones place:
+3
- (-4)
_______
+7
Now go to the tens place:
-5x
-(8x)
________
-13x
Lastly, go to the hundreds place:
6x^2
-(3x^2)
_________
3x^2
So, the correct answer is "3x^2 -13x + 7", which is C.
I hope this helps! :)
Answer: 3-subject notebook cost $0.67 or 67 cents and the single-notebook cost $0.33 or 33 cents.
Step-by-step explanation:
Let's represent the 3-subject notebook by y and the single-notebook by x.
y has to cost twice as much as x and we can represent that by the equation
y = 2x
We now know that the total cost of the 3-subject notebook and the single-subject notebook has to equal $1.
We can also represent that by the equation and solve for x
2x + x = 1
3x = 1
x = 0.33 $0.33 or 33 cents
If the single-subject is $33 cents then subtract it from a dollar to see how much the 3-subject notebook costed.
1- 0.33 = 0.67