Two rectangles are similar. One has a length of 11 cm and a width of 10 cm, and the other has a width of 7 cm. Find the length o
2 answers:
Answer:
The length of the rectangle is 7.7 cm.
Step-by-step explanation:
When two rectangle are similar then the ratio of their length is equal to the ratio of their width,
Given,
The length of one rectangle = 11 cm,
Its width = 10 cm,
Also, the width of the second rectangle = 7 cm,
Let l be the length of the second rectangle,
By the above property,
Hence, the length of the second rectangle is 7.7 cm.
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Assuming we're dealing with , which is the same as writing (x+2)/(-5) < 4, then the answer is choice C.
We multiply both sides by -5 and this will flip the inequality sign.
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Multiplying or dividing both sides by a negative number flips the inequality sign.
An example would be saying -2x < 10 leads to x > -5
What we can do is divide both sides by -2 and flip the inequality sign, or we could follow the steps shown below
- -2x < 10
- 0 < 10+2x ... adding 2x to both sides
- -10 < 2x ... subtracting 10 from both sides; this is one way to see why the sign flip happens
- 2x > -10
- x > -10/2 ..... dividing both sides by 2
- x > -5