Answer:
C (n - 15 = 4)
Step-by-step explanation:
This is the answer becuase it can be rewritten as:
n - 4 = 15 (by subtracting 4 from both sides and adding 15 to both sides);
this equation describes the "written" (verbal) equation.
The area of a rectangle is length * width so: (x+4) * (x-9)
(I assumed you meant x+4 just forgot to put the "+" there, if it's something else, then just simply use that instead.)
Answer:
8
Step-by-step explanation:
(-1 + i√3)³
Use binomial expansion:
(-1)³ + 3 (-1)² (i√3) + 3 (-1) (i√3)² + (i√3)³
Simplify:
-1 + 3i√3 − 3 (i√3)² + (i√3)³
-1 + 3i√3 − 3 (-3) + (-3i√3)
-1 + 3i√3 + 9 − 3i√3
8
Answer : Marcia salt solution has more concentration than Bobby salt solution
The concentration of Marcia salt solution is 1kg/3L= 0.33kg/L
It's a bit harder to count Bobby salt solution since you need to convert the pounds into kg and the pints into Liter. If you don't do that, you can't compare the concentration. The calculation would be:
2 pounds/ 15pints x (1kg/2.2lb) x (1L/2.1pints) = 0.02889 kg/L
Rounded up into hundredth = 0.03kg/L
<h2>The required "option d) 6x – 7" is correct.</h2>
Step-by-step explanation:
To find, an algebraic expression for the given phrase = ?
6 times the length x = 6x
and
7 inches shorter than 6 times the length x
= 6x - 7
∴ 7 inches shorter than 6 times the length x of a table in inches = 6x - 7
Hence, the required "option d) 6x – 7" is correct.
