Answer:
14.8 kg
Step-by-step explanation:
Density = Mass / Volume
9.86 g/cm3 = Mass / 150 cm3
Mass = 9.86 x 150 = 1479 g
Answer:
x= 2
x= -3
Step-by-step explanation:
<u>Solving as normal quadratic equation:</u>
- 2x^2+2x=12
- x^2 +x = 6
- x^2 + x - 6= 0
- x = (-1 ± √(1+4*1*6)/2
- x = ( - 1 ± √25)/2
- x = (-1 ± 5)/2
- x= 2
- x= -3
<u>Roots are</u> 2 and -3
<span>"Five times a number added to -4"
5x + (-4)
</span>
<span>subtracted from...
"twice the sum of eight times the number and 7"
2(8x + 7)
5x - 4 - 2(8x + 7)
distribute the -2
5x - 4 - 16x - 14
combine like terms
</span><span>
-11x - 18
</span>
Answer: I'm pretty sure its 483c try it
Step-by-step explanation: