3 years ago

If y varies directly as x, find the unknown value in the problem below:

Mathematics

1 answer:

Oksi-84 [34.3K]3 years ago

3 0

12/-30=8x
cross multiply
12x=-240
x=-20

You might be interested in

Kelly owns a farm, there are ducks and cows in her farm, there are a total of 47 heads and 128 legs. How many of each kind of an

Anni [7]

They will be 81 of each kind of animal she will have

5 0

4 years ago

Please help!!! 20 points!!

Aleksandr-060686 [28]

The answer that you are looking for is C.

5 0

3 years ago

The steps below show the incomplete solution to find the value of x for the

Zielflug [23.3K]

Answer:

x=5 use its a great source

6 0

4 years ago

If a company buys coffee at a price of $5/kg and then sells it their stores for $18/kg, what is the percentage profit compared t

vredina [299]

Answer:

260%

Step-by-step explanation:

For the coffee;

cost price ( $C_{P}$ ) = $5/kg

selling price ( $S_{P}$ ) = $18/kg

Percentage profit (%P) = $\frac{S_P - C_P}{C_P} * 100%$ %

Substitute the right values into the above;

%P = $\frac{18 - 5}{5} * 100%$ %

%P = $\frac{13}{5} * 100%$ %

%P = 260%

Therefore, the percentage profit compared to the original cost of the coffee is 260%

3 0

3 years ago

Find the value of the expression: a 8x^3 for x=-2;-1;0;3

dsp73

Simply replace each x with the given value of x.

When x = -2:

$8(-2)^3\\8(-8)\\\\=-64$

When x = -1:

$8(-1)^3\\8(-1)\\\\=-8$

When x = 0:

$8(0)^3\\8(0)\\\\=0$

When x = 3:

$8(3)^3\\8(27)\\\\=216$

OR you could use a graph for this, here is how the function is going to look:

3 0

3 years ago