Answer:
All the expressions that have a negative in the radical
(Boxes 2, 3 5, and 6)
Step-by-step explanation:
You can't take the square root of a negative number. When you square a number, the product will always be positive.
Hope this helps!
Answer:
A. n = 5
Step-by-step explanation:
S = n² + n
When S = 30:
n² + n = 30
Subtract 30 from both sides: n² + n - 30 = 0
Factorize: (n - 5)(n + 6) = 0
Therefore n = 5 or -6
As n > 2, then n = 5 only
Answer:
$6
Step-by-step explanation:
The answer is 6 because 0.50 times 12 is 6
P.S Can I have brainliest?
Answer:
$330
Step-by-step explanation:
What is mean/average?
It is the "sum of all the numbers" divided by the "number of numbers".
An average of 200 for 6 numbers means:
THus, if we were to add the 6 numbers, we would get "1200". Let the 6th number be x, so we can write:
120 + 110 + 200 + 300 + 140 + x = 1200
870 + x = 1200
x = 1200 - 870
x = 330
To make the average $200, Pedro needs to make $330 on 6th day.
Answer:
the price for one pretzel was $1.75
Step-by-step explanation:
d for drinks
p for pretzel
3d + 3p = 9
3d = 9 -3p
d = 3 - p
replace d = 3 - 9 into 4d + 2p = 8.5
4d + 2p = 8.5
4(3 - p) + 2p = 8.5
12 - 4p + 2p = 8.5
-2p = 8.5 - 12
-2p = -3.5
p = 1.75
