3 years ago

The variable y varies directly as x. when x=20, y=12. what is the value of y when x=15?

1 answer:

6 0

Answer: its 21

Step-by-step explanation:

just did it

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Ira Lisetskai [31]

I don't know how to solve this without knowing the a, b, n, and x values, unless you are just telling us to simplify it

5 0

3 years ago

marta [7]

Answer:

(3,3) for #1

Step-by-step explanation:

Graph both equations and where they intersect is your answer

3 0

3 years ago

antoniya [11.8K]

Step-by-step explanation:

The question is not properly structured but we can as well find the sum of 5/7 and 10 as shown;

$\frac{5}{7}+ \frac{10}{1} \\The \ LCM \ is \ 7\\\\= \frac{5(1)+10(7)}{7}\\\\= \frac{5+70}{7}\\\\= \frac{75}{7} \\\\= 10 \frac{5}{7}$

Hence the expression written in equivalent form of common denominator is $\frac{5 + 70}{7}$

The sum is $10 \frac{5}{7}$

8 0

3 years ago

marissa [1.9K]

We use the equation 2x+8x=50.

10x=50
x=5

The rectangle will be 20 cm long and 5 cm wide.

Hope this helps!

7 0

3 years ago

Semmy [17]

Answer: x>-1

Step-by-step explanation:

Dotted line on the axis is covering y infinitely, so theres an inequality on x, and the line is at -1, so x should be > - 1

3 0

2 years ago

The variable y varies directly as x. when x=20, y=12. what is the value of y when x=15?​