Answer:
- C. V = 15 x 4.2
- D. V = 7.5 x 2 x 4.2
Step-by-step explanation:
The volume is the product of the three dimensions, so can be figured as ...
7.5 × 2 × 4.2 . . . . choice D
Carrying out the first multiplication, this will be equivalent to ...
15 × 4.2 . . . . . . . . choice C
In degrees: 3π/4 radians = 135°
Angle of x=135° is in the 2nd Quadrant and has negative cos x values and positive sin x values.
cos 135° = cos ( 90° + 45°)= - sin 45° =
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sin 135° = sin ( 90° + 45° ) = cos 45° =
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. You can also see the graph in the attachment.
Answer:
b=3
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
b
=
3
b=3
Answer: See explanation
Step-by-step explanation:
7x - 2(x + 3y) + 3y
= 7x - 2x - 6y + 3y
= 5x - 3y
Will got 5x + 9y because he didn't multiply the values in the bracket by the minus sign outside the bracket. He multiplied the values by +2 rather than -2. This resulted in the wrong answer that he got.