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meriva
3 years ago
13

A rectangle has a width of 5 meters and a length of 7 meters a similar rectangle has a width of 15 meters what is the length of

the similar rectangle?
Mathematics
1 answer:
JulsSmile [24]3 years ago
6 0
Similar rectangles have or form similar ratios. Hence to solve this, you have to get the ratio of the measurements:
Let N be the length of the similar rectangle
  5/7 = 15/N
5(N) = 7(15) -> cross multiply
  5N = 105
 5N/5 = 105/5 -> divide both sides of the equation by 5
    N = 21
Therefore, 21 meters in the length of the similar rectangle
To check - 
5/7 = 15/21 (cross multiply)
105 = 105

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Answer:

Step-by-step explanation:

Given the expressions :

The list price of the item is 80 percent of the original price. The price of the item has been reduced by 80 percent.

Write a pair of linear equations using variables of your choice to prove that these two statements are not equivalent.

Let the original price = x

Expression 1 : The list price of the item is 80 percent of the original price

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Expression 2: The price of the item has been reduced by 80 percent

Price = x - 80% of x

Price = x - 0.8x

Price = 0.2x

Multiply by percentages is different from an Incremental or decrement in percentage. The first expression above signifies a direct multiplication by the stated percentage while the second signifies a decrease in price based on a certain percentage of the original price.

Wording of percentages are so important for clarity in other to understand if the statement signifies a direct application of the percentage prescribed or a change in quantity, amount or size relative to the base unit.

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3 years ago
Which equation involves a prime quadratic and cannot be solved by factoring? A. x2 + 6x + 9 = 0 B. x2 − x − 6 = 0 C. x2 + 3x − 4
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The answer is D, because the others can be solved. A when factored is equal to -3, when B is factored it is equal to 3,-1, when C is factored it is 1,-4. D can be solved but you will only get irrational numbers which can't be used.

4 0
3 years ago
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Solve for m <br>5m - 10m = 20<br><br>can anyone help me out?​
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Answer:

m=-4

Step-by-step explanation:

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225/5 = 45
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The equation of the line passing through the points (3, 16) and (5, 10) can be expressed as y = mx + b. Give the value of b
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we are given two points as

(3, 16) and (5, 10)

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so, we can use formula

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now, we can plug points

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b=25...............Answer

8 0
3 years ago
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