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Mathematics

1 answer:

Gemiola [76]3 years ago

3 0

Answer:

(b) 1:9

Step-by-step explanation:

(b) x*y : kx*ky, so 1:k² with k=3 is 1:9

(c) Assuming the rectangles get a z dimension, the volumes would have a ratio of xyz : xkykzk = xyz : xyzk³ = 1 : k³. With k=2 that is 1:8. But the z was never introduced so this is a bit inconclusive.

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A + 2 / 2 = -1 can someone help

dimaraw [331]

A+ 2/2= -1
⇒ A+ 1= -1
⇒ A= -1 -1
⇒ A= -2

Final answer: A= -2~

6 0

4 years ago

Solve for x. See the image below!

Nataly [62]

Answer:

x = 17

Step-by-step explanation:

in such a constellation (two beams from the same point of origin cut through the same circle) the relative relation between the segments of these beams to the overall length of the beam have to be the same :

7 × (7+x) = 8 × (8+13)

49 + 7x = 8 × 21 = 168

7x = 119

x = 17

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3 years ago

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SCORPION-xisa [38]

Answer:

The answer to your question is 5.7

Step-by-step explanation:

Data