F(x) = -9x^2 + 7x + 2
Factorising we get:
f(x) = (x + 1) (-9x + 2)
The solutions are x = -1 and 2/9ths
Answer:
4,000 is that answer to 3,623 to the nearest thousands.
Step-by-step explanation:
<h3>l hope it helps ❣❣</h3>
Similar figures are figures which has the same shape however they do not always have the same size. It should not be used interchangeably with congruent figures since the latter would refer to figures which has the same size and shape. Thus, congruent figures are always similar figures but similar figures are not always congruent figures. From the choices given, I think the best choice would be the first option. The two squares would be the pair of non-congruent figures that are always similar. This is because no matter what are the side lengths of the squares, it will always have the form of the square.
The answer is the first one, 1,215
Answer:
1. 39 km/hr
2. $235
3. 16
4. 7m+3 inches
Step-by-step explanation:
1. Original speed of car: x km
x+21=60
x=39
original speed: 39 km/hr
2. Amount that the freshman class raised: x
2x+85=555
2x=555-85=470
x=235
Amount that the freshman class raised: $235
3. Number: x
5x-9=71
5x=71+9=80
x=16
The number: 16
4.
3m+5+4m-2
= 3m+4m+5-2
=7m+3 inches
