Answer:
The answer is the second one.
From all those aforementioned, the true statement is: Thanh’s grade is 2.5 standard deviations below the mean of the test grades.
X = the number
14 + 2x = 6x - 7
21 + 2x = 6x
21 = 4x
5.25 = x
The number is 5.25.
Answer:
216 cm²
Step-by-step explanation:
Use the formula for the surface area of a cuboid.
SA = 2lw + 2lh + 2hw
2(6)(3) + 2(6)(10) + 2(10)(3)
36 + 120 + 60
= 216
The surface area of the cuboid is 216 cm².
Answer: 3/8
Step-by-step explanation:
1/2 × 3/4
Multiply the numerators: 1 × 3 = 3
Multiply the denominators: 2 × 4 = 8
I hope this is clear, have a great day.
