Answer:
2450 mm³
Step-by-step explanation:
(15×10×7) + [(40+10)×4×7]
2450
Answer:
B
Step-by-step explanation:
The interquartile range is the difference between the upper quartile and the lower quartile.
The upper quartile is the right side value of the box
The lower quartile is the left side value of the box
upper quartile = 61 and lower quartile = 39
IQR = 61 - 39 = 22 → B
Answer:
8+8= 16
Step-by-step explanation:
Answer:
- D = -87
- Dx = 174
- Dy = -435
- Dz = 0
- (x, y, z) = (-2, 5, 0)
Step-by-step explanation:
The determinant of the coefficient matrix is ...

The other determinants are found in similar fashion after substituting the constants on the right for each of the above matrix columns, in turn.
Those determinants are ...



The solutions are ...
x = 174/-87 = -2
y = -435/-87 = 5
z = 0
That is, (x, y, z) = (-2, 5, 0).
Recall that the discriminant is b² - 4ac
So, substitute, b = 4, a = -1 and c = -2
Δ = 16 - 4(-1)(-2) = 16 - 8 = 8