$\bf \begin{array}{ccll}charge&day\\\cline{1-2}\frac{1}{3}&\frac{3}{8}\\\\x&1\end{array}\implies \cfrac{~~\frac{1}{3}~~}{x}=\cfrac{~~\frac{3}{8}~~}{1}\implies \cfrac{~~\frac{1}{3}~~}{\frac{x}{1}}=\cfrac{3}{8}\implies \cfrac{1}{3}\cdot \cfrac{1}{x}=\cfrac{3}{8}\\\\\\\cfrac{1}{3x}=\cfrac{3}{8}\implies 8=9x\implies \cfrac{8}{9}=x$

3 0

3 years ago

10 points! What is the slope of the given line?

aleksklad [387]

Answer:

-5/2

Step-by-step explanation:

8 0

2 years ago

If 2a+3b=12 and ab=6 find the value of 8a^3+27b^3

Alex17521 [72]

A) 2a + 3b = 12
B) ab = 6 solving for a
B) a = 6 / b then we substitute this into equation A)
A) 12 / b + 3b = 12 multiplying this by "b"
A) 12 + 3b^2 = 12b
A) 3b^2 -12b +12= 0 dividing by "3"
A) b^2 -4b + 4 = 0
Factoring
(b-2) * (b-2) = 0
b = 2
Since b = 2 then a = 3

NOW, we put these numbers into:
8a^3 +27b^3 
8*3*3*3 + 27*2*2*2
216 + 216
The answer is 512

6 0

3 years ago

Read 2 more answers

The ratio of people who walk home from school to people who ride the bus home is 2 : 7 2 : 7 . The number of bus riders is how m

SashulF [63]

Ratio walkers to riders 2:7

7/2=3.5

The bus riders are 3.5 times more than the riders

8 0

2 years ago