Answer:
3. 224 cm3
4. 35 cm3
5. 60 cm3
Step-by-step explanation:
To find the volume you need to multiple the base times the height times the length.
Hello!
3x - 32 = -7x + 28
-32 - 28 = -7x - 3x
-60 = -10x
-6 = -x
6 = x
x = 6
I hope this helps you! Have a lovely day!
- Mal
Answer:
Step-by-step explanation:
the first one
We could do it with algebra. But we can also do it the long way, which is
shorter than the algebraic way.
The digit in the tens place is 3 times the digit in the units place.
So the number MUST be
31, or
62, or
93 .
It can't be anything else.
Now here they are again, with the reverse of each one:
31 . . . 13 The new number is 18 less.
62 . . . 26 The new number is 36 less.
93 . . . 39 The new number is 54 less.
Obviously, the original number is 62.
