Answer:
Step-by-step explanation:
sqrt(28): sqrt(4*7)
sqrt(4) = 2;
sqrt28)=2*sqrt(7)
sqrt(343): sqrt(7 * 7 * 7) = 7 * sqrt(7)
Note: the rule is if you have 3 equal primes under the root sign, you leave one, you throw one away, and you put one outside the root sign.
2 sqrt(63) = 2 sqrt(3*3*7) The above rule gets modified to throw 1 three away and take the other one outside the root sign.
2sqrt(63) = 2*3 sqrt(7)
Numerator: 2*sqrt(7) + 7sqrt(7) = 9sqrt(7)
9sqrt(7)
======
6 sqrt(7)
3/2
Note without brackets I cannot be certain that I have interpreted this correctly. The division only apply to sqrt(343) / 2 sqrt(63). If this is so please leave a note.
Answer:
The spinner is 4 times more likely to land on black.
There were 72 black spins compared to 18 white spins. This means there were 4 times more black spins than white spins; this means the spinner is not equally likely to land on either co
The answer choice which best fits the function described in the task content is; Choice A; time(length).
<h3>Which would be a good name for the function?</h3>
It follows from the task content that the function takes the length of a race and returns the time needed to complete it.
On this note, it follows that the time taken is a function of the length of the race.
Hence, the appropriate name of the function is; Choice A.
Read more functions;
brainly.com/question/17043948
#SPJ1
Simplifying:
2n-21=0.25n
We move all terms containing n to the left and all other terms to the right.
+2n-0.25n=+21
We simplify left and right side of the equation.
+1.75n=+21
We divide both sides of the equation by 1.75 to get n.
n=12
Answer:
Please have a more elaborated question
Step-by-step explanation:
Tried my best
