Answer:
I do to
Step-by-step explanation:
Answer:
The number is -2
Step-by-step explanation:
First let's turn this into an equation
5 times a number (we'll use x) + 34 = 24
5x+34= 24
Now to start solving the problem
First thing's first, let's carry over the 34 to the other side by subtracting 34 from both sides. This helps us try to get x by itself
5x+34 = 24
-34 -34
5x = -10
Now we just divide both sides by 5 to get rid of it entirely from the x
5x = -10
/5 /5
x = -2
Your number should be -2
We can also check by plugging -2 back into the equation for x
5 (-2) +34 = 24
-10 +34 = 24
24 = 24
Since they are both equal, -2 is really your answer
I hope this helps :)
Answer:
:) /
Step-by-step explanation:,,
Answer:
It is #3
Step-by-step explanation:
Answer:
This test batch can be chosen in 2380 ways
Step-by-step explanation:
The order in which the batteries are chosen is not important. So we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.
![C_{n,x} = \frac{n!}{x!(n-x)!}](https://tex.z-dn.net/?f=C_%7Bn%2Cx%7D%20%3D%20%5Cfrac%7Bn%21%7D%7Bx%21%28n-x%29%21%7D)
In how many ways can this test batch be chosen?
4 batteries from a set of 17. So
![C_{17,4} = \frac{17!}{4!(17-4)!} = 2380](https://tex.z-dn.net/?f=C_%7B17%2C4%7D%20%3D%20%5Cfrac%7B17%21%7D%7B4%21%2817-4%29%21%7D%20%3D%202380)
This test batch can be chosen in 2380 ways