Answer:
the answer is $2.50
Step-by-step explanation:
i just did the assignment
11. x² - 7x = 0
x(x) - x(7) = 0
x(x - 7) = 0
x = 0 or x - 7 = 0
+ 7 + 7
x = 7
Solution Set: {0, 7}
12. 3x² - 4x = 20x + 27
+ 4x + 4x
3x² = 24x + 27
3x² - 24x - 27 = 0
x = -(-24) ± √((-24)² - 4(3)(-27))
2(3)
x = 24 ± √(576 + 324)
6
x = 24 ± √(900)
6
x = 24 ± 30
6
x = 4 ± 5
x = 4 + 5 or x = 4 - 5
x = 9 or x = -1
Solution Set: {9, -1}
Answer:
5. 4 6. 6
Step-by-step explanation:
Number 5
Subtract the numbers: 10 - 6 = 4
Number 6
![70-\left(\sqrt[3]{64}\right)^3](https://tex.z-dn.net/?f=70-%5Cleft%28%5Csqrt%5B3%5D%7B64%7D%5Cright%29%5E3)
![\left(\sqrt[3]{64}\right)^3=64](https://tex.z-dn.net/?f=%5Cleft%28%5Csqrt%5B3%5D%7B64%7D%5Cright%29%5E3%3D64)
Subtract the numbers: 70 - 64 = 6
A : 2/20
b : 16/20
c : 1/5
omg i used to love doing this ,
hope it helps !!
Volume of the water displaced
= 1.2*4*4= 19.2 = volume
Density of metal = 52 / 19.2
