$8 {(x + 8)}^{2} + 9 \geqslant 9 \: ( {(x + 8)}^{2} \geqslant 0) \\ \Leftrightarrow x + 8 = 0\Leftrightarrow x = - 8 \\ \Rightarrow D.\: Minimum\: at\: x=-8$

3 0

3 years ago

Finn is swimming at a constant speed.

Reil [10]

Answer:

31.25 seconds

Step-by-step explanation:

Examine division

11.6 + 24.4 = 36 m < 50m

and 36 + 37.2 - 73.2m > 50m

50 - 36 = 14m

14 * 23.25/37.2 = 8.75 seconds

7.25 + 15.25 + 8.75 = 31.25 seconds

so it would take him 31.25 seconds to swim 50 meters.

6 0

2 years ago

Question 5<br> Which expression is equivalent to 5(6+4)

Marianna [84]

PEMDAS
6 + 4 = 10
5(10) = 5*10 = 50

50 is your answer

I hope this helps :)

3 0

3 years ago