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jek_recluse [69]
2 years ago
13

4.5 is 75% of what number

Mathematics
1 answer:
il63 [147K]2 years ago
6 0

Answer:

The answer is 6

Step-by-step explanation:

4.5 = 75% × Y

4.5 =  

75

100

× Y

Multiplying both sides by 100 and dividing both sides of the equation by 75 we will arrive at:

Y = 4.5 ×  

100

75

Y = 4.5 × 100 ÷ 75

Y = 6

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Help please. I don’t understand and my teacher didn’t bother to teach us any of this and my brain hurts!!!!
const2013 [10]

Answer:

  23.  42 m^2

  24.  144 ft^2

  25.  68 cm^2

Step-by-step explanation:

The teacher should not need to spend any time teaching this. The area of the total figure is the sum of the areas of its parts. You already know that. And, you already know how to compute the areas of triangles and rectangles.

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You may recall that the area of a triangle is ...

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and the area of a rectangle with the same base and height is ...

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So, a triangle with base b and height h has the same area as a rectangle with the same base (b) and half the height (h/2). Recognizing this makes these problems really simple.

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23. The base of the rectangle and triangle is 7 m. The height of the triangle is 4 m, so its area is equivalent to adding 4/2 = 2 m to the 4 m height of the rectangle. Then the total area is ...

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24. Since there are two identical triangles of height 5, their total area is equal to that of a rectangle of height 5.

  A = (12 ft)(7 ft +5 ft) = 144 ft^2

__

25. The 5 cm height of the triangle makes it have an area equivalent to a rectangle 5/2 cm high.

  A = (8 cm)(6 cm +5/2 cm) = 68 cm^2

Note: we have read the fuzzy numbers as 8 cm wide, 6 cm high for the rectangle, and 5 cm high for the triangle. If your figure is different, please use the appropriate numbers in the calculation.

8 0
3 years ago
If the population of a town was experiencing uninhibited decay of 2% per year, how long would it take the population to decrease
hichkok12 [17]

Answer:

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Step-by-step explanation:

7 0
2 years ago
I need answers please
damaskus [11]

Answer:

The second one.

Step-by-step explanation:

7 0
2 years ago
In a rhombus, the sides are 14 inches long. two intersecting sides form a 60 degree angle. what are the exact lengths of the two
Klio2033 [76]
Long Diagonal AD = Square Root  (2•Side² + 2•Side² • cos(A) )
Long Diagonal AD = <span>Square Root (2*14^2 + </span><span>2*14^2 * cos(60) )
</span><span><span>Long Diagonal AD = Square Root (</span> 392 + 392*.5)
</span>Long Diagonal AD = <span>Square Root (392 + 196)
</span>Long Diagonal AD = Square Root (588)<span>
Long Diagonal AD = </span><span><span><span>24.248711306 </span> </span> </span> <span>

Short Diagonal BC = Square Root  (2•Side² - 2•Side² • cos(A) )
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<span>Short Diagonal AD = 14

</span>
4 0
2 years ago
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