His average is 80%. You take the two scores add them up and divide by the number of scores.
Answer:
6 : 1
Step-by-step explanation:
A unit rate has to be "a number to 1" or "x:1". Here we have a number to 1/4. Multiply both numbers by 4 so the 1/4 becomes 1.
3/2 * 4 = 12/2 = 6
1/4 * 4 = 1
3/2 : 1/4 is the same as 6 : 1
A) The with is 8 inches. You would do 32/4 to get your answer
B) The perimeter is 12. P=l+w so P=8+4 which is 12.(P stands for perimeter
A way you can show work is just not use the commas then subtract then put the commas in when you're done. And, if the bigger number isn't as big or has as many numbers behind the decimal as the first one, add a zero at the end.
Answer: ![12\ inches](https://tex.z-dn.net/?f=12%5C%20inches)
Step-by-step explanation:
Let be "x" the height inches (in the model) of a 84 foot building.
According to the information provided in the exercise, we know that the height of a two-story building is 21 feet and in the scale model its height is 3 inches.
Knowing this, we can set up the following proportion:
![\frac{3}{21}=\frac{x}{84}](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B21%7D%3D%5Cfrac%7Bx%7D%7B84%7D)
The final step is to solve for "x" in order to calculate its value. We get that this is:
![\frac{3}{21}=\frac{x}{84}\\\\(84)(\frac{3}{21})=x\\\\x=12](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B21%7D%3D%5Cfrac%7Bx%7D%7B84%7D%5C%5C%5C%5C%2884%29%28%5Cfrac%7B3%7D%7B21%7D%29%3Dx%5C%5C%5C%5Cx%3D12)
Therefore, an 84 foot building will be 12 inches tall in the model.