80x20=1600 costumes
12x90=1080 masks
1600-1080=520
they ordered 520 more costumes than masks. hope this helps!
Answer:
oh ok. So, first, you get the equation in the form y=ax2+bx+c. Next, you calculate -b / 2a. This is the x-coordinate of the vertex. Then finally, you plug in the value of -b / 2a into the equation into the x variable and solve for the y variable. This is the coordinate of the vertex.
Step-by-step explanation:
Hope this helps!
Answer:
200 miles
Step-by-step explanation:
40 x 5 = 200
Answer:
6.8%
Step-by-step explanation:
When you divide this, you get 0.068. This is in decimal form. To change to a percent move the decimal to places to the right 6.8%
Yes, 0.34 is a rational number since it can be written as a fraction.
