Change the messy words into numerals
3 times a number minus 2 equals 13
3 × n - 2 = 13
3n - 2 = 13
take 2 to the other side
3n - 2 + (2) = 13 + (2)
3n = 15
Divide by 3 on either sides to isolate n
=
3 and 3 cancels out
n = 5
check:
3 times 5 minus 2 equals 13
3 × 5 - 2 = 13
15 - 2 = 13
13 = 13
The number is 5
You could change all fractions to decimals
2 5/8 = 2.625
3/4 = 0.75
2.625 - 0.75 = 1.875
If you need to stay in fractions, you could do it this way.
2 5/8 = 21/8
3/4 = 6/8
21/8 - 6/8 = 15/8 = 1 7/8 Her classmates ate 1 7/8 pounds of nuts
If your calculator has an (a b/c) key the whole problem can be done on your calculator
Answer:
Step-by-step explanation:
<u>Given the scale factor:</u>
Since the cylinders are similar, the other dimensions should have same scale factor of 1/3.
<u>The volumes are:</u>
<u>Ratio of volumes is the cube of the scale factor, as the volume is the product of 3 dimensions:</u>
- v/x = k³
- 67/x = (1/3)³
- x = 67*27
- x = 1809 cm³
Answer:
C, i have had this question b4
Step-by-step explanation:
Answer:
5x-10=2x+20(alternative) ans10
4x+10=2x+20(corresponding) ans 10
4x^2-25 of multiple
add ans 5x^2-5x+5
subtract ans 2a^2-7a+12
if value ans 6
square is 25x-9
cube is 4a-25