Answer:
(x+3)(x−7)
Step-by-step explanation:
Break the expression into groups.
=(X^2+3x)+(-7x-21)
Factor out x from x^2+3x: x(x+3)
Factor out -7 from -7x-21: -7(x+3)
=x(x+3)-7(x+3)
Factor out common term x+3
=(x+3)(x-7)
Glad I could help!!
Answer: 12 metres
Step-by-step explanation:
The scale factor used for the model is 1 : 30.
This means that for any 1cm on the model, the real boat would be 30 cm.
If the height is 40 cm on the model, the real boat will be 30 times that:
= 40 * 30
= 1,200 cm
A metre is equivalent to 100cm.
1,200 cm would therefore be:
= 1,200/100
= 12 metres
Answer:
Yes
Step-by-step explanation:
A square can be a rectangle however, a rectangle can't be a square. I learned this is elementary school a while back.