Answer:
Ultrasound
Step-by-step explanation:
Ultrasounds use sound waves to create images in real time. Therefore, medical doctors can use these to observe internal organs <em>and </em>blood vessels.
Answer:
1. 22% of 10 = 2.2
2. 16% of 30 = 4.8
3. 25% of 50 is 12.5
4. 65% of 300 = 195
5. 10% of 450 = 45
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Answer:
C. a=p, b=q, c≠r
Step-by-step explanation:
The equations will have no solution when they describe lines with the same slope, but different y-intercepts. The slopes of these lines are ...
-a/b and -p/q
One way for -a/b = -p/q is to have a=p and b=q. When that is true, the y-intercepts will be different when c ≠ r.
Choice C offers a condition guaranteeing no solution.
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<em>Additional comment</em>
Consider the equations ...
2x +3y = 5 4x +6y = 5 . . . note that a≠p, b≠q, c=r . . . matches choice B
These two equations describe parallel lines, so will have no solution. In effect, both choices B and C "may" be true when there is no solution, but neither "must" be true.
Answer:
1 + sin2x
Step-by-step explanation:
Given
(sinx + cosx)² ← expand using FOIL
= sin²x + 2sinxcosx + cos²x
[ sin²x + cos²x = 1 and sin2x = 2sinxcosx ]
= 1 + sin2x