Please help, I have two questions that I need answers to for 25 points!

Mathematics

1 answer:

arsen [322]3 years ago

7 0

Answer:

1) 6+7=42 $feet^{2}$

2) Beginning (0,0,-25) end (0,-20,-25)

Step-by-step explanation:

1) Plot these point on graph. By this you can determine the fourth coordinate(-3,4) as it is a rectangle.

So, length =7

breadth =6

area =7*6 =42 $feet^{2}$

2) Here height of rack is 25 feet thus it's Z coordinate is -25.

It moved 20 feet south along Y axis thus Y coordinate = -20

No movement in X thus x coordinate =0

Thus , beginning (0,0,-25) end (0,-20,-25)

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What is the product?

Alona [7]

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Step-by-step explanation:

$= > ( - 3s + 2t)(4s - t) \\ \\ = > - 3s(4s - t) + 2t(4s - t) \\ \\ = > ( ( - 3s) \times 4s )- (( - 3s) \times t) + (2t \times 4s) - (2t \times t) \\ \\ = > - 12 {s}^{2} - ( - 3st) + 8st - 2 {t}^{2} \\ \\ = > -12 {s}^{2} + 3st + 8st - 2 {t}^{2} \\ \\ = > - 12 {s}^{2} + 11st - 2 {t}^{2}$