Answer:
Step-by-step explanation:
a) She has left 25% of her work. 1/4 is 25%.
b) In the model you can see that the total work is divided in 4 equal portions. Each portion represents 1/4 of the workday.
In the second figure you can see in green marked the portions of workday worked, as it is 3/4 it means 3 portions of a total of 4. So, one portion is left, that is marked in yellow color. One portion of a total of 4 portions, it means 1/4.
To express 1/4 in percentage, you need to divide 1 by 4 and the multiply by 100.
![\frac{1}{4} *100=25percent](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B4%7D%20%2A100%3D25percent)
The percent of workday left is 25%
Answer:
Step-by-step explanation:
The graph of f(x) = x^2 is a parabola opening up and with vertex at (0, 0).
The graph of (1/3)f(x) is also a parabola that opens up and has vertex at (0, 0), but this new graph has been vertically compressed by a factor of 3.
Answer:
Use the value for the variable to solve for the other unknowns. Substitute the value for the variable into the expression for the number of seats on the middle level. Substitute the value for the variable into the expression for the number of seats on the lower level.
Answer:
a. 42, 48
Step-by-step explanation:
The angles being complementary means their total measure is 90°.
(12q -9) +(8q +14) = 90
20q +5 = 90 . . . . . . . . . . . simplify
20q = 85 . . . . . . . . . . . . . . subtract 5
q = 4.25 . . . . . . . . . . . . . . . divide by 20
Now, put this value into the expressions for the angle measures:
12q -9 = 12·4.25 -9 = 42
8q +14 = 8·4.25 +14 = 48
These two angle measures total 90, so our answer checks OK.
The measures of the angles are 42 and 48 degrees.
"m equals five minus n" is your verbal model
hope this helps