100-37=63
it helps to write the problem like this
100
- 37
since there are no units you need to borrow from the tens, but there are no tens so you need to borrow from the hundreds
now the equation could be written in two pieces like this
90 10
- 30 - 7
90-30=60
10-7=3
60+3=63
Answer:
This is the product of three nines (three factors of 9). 9 × 9 × 9 × 9 = 6561 --> This is the product of four nines (four factors of 9). It's a common mistake among educators to state that 81 is what we get by "multiplying nine by itself twice".
Answer:
x = 4
Step-by-step explanation:
Start by setting the two expressions equal to each other, since they're the same height.
6 + 15x = 6x + 42
Subtract 6x from both sides
6 + 9x = 42
Subtract 6 from both sides
9x = 36
Divide both sides by 9
x = 4
Answer:
40 inches
Step-by-step explanation:
4inches/2 = 2 yards
20 yards x 2 = 40 inches
In looking for f(g(x)), one has to substitute the expression of g(x) in place of the variable "x" in f(x). This is shown below:
Given:
f(x) = 9x - 2
g(x) = -x + 3
f(g(x)) = 9(-x + 3) - 2
f<span>(g(x)) = -9x + 27 - 2
</span>f<span>(g(x)) = -9x + 25</span>