3 years ago

Which statements are true about reflections? Check all that apply

2 answers:

4 0

Answer: Reflection is the change in direction of a wavefront between two different media so that the wavefront returns into the medium from which it originated.

Step-by-step explanation:

Irina-Kira [14]3 years ago

4 0

Answer:

1,2,3,4,6

Step-by-step explanation:

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5 - 2 (a + 3b) / 2 = ? / ?

Semmy [17]

Answer:

(5-2a+6b)/2

Step-by-step explanation:

According to PEMDAS, we would multiply 2 by (a+3b) first. This would equal 2a+6b. Since this is being subtracted from 5, the numerator would equal 5-2a+6b. This would bring the simplified answer to (5-2a+6b)/2

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2 years ago

Lucy made 3 cakes that each weighed 32 ounces. how many pounds of cake did lucy make

Anna11 [10]

There are 16 ounces in a pound. 3 x 32= 96
96/16=6

Lucy made 6 pounds of cake. Hope this helped!

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2 years ago

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Determine the value of a so that A = 2i+aj+k and B = 4i-2j-2k are perpendicular

Digiron [165]