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VladimirAG [237]
3 years ago
12

Witch of the following are equivalent to 45%? choose all that apply.

Mathematics
2 answers:
olga55 [171]3 years ago
8 0
B) 0.45 and D) 9/20 are both eqivalent to 45%.
fomenos3 years ago
6 0
Hello there! Just by looking at the choices, C is definitely out, because 9/10 is equivalent to 90%, not 45%. Looking at answer choice A, that number equals 4.5%, because 0.045 * 100 is 4.5%. In this case, A is also eliminated. 0.45 is equivalent to 45%, because 0.45 * 100 is 45%. B works. D also works, because 9/20 is 0.45, and once again, 0.45 * 100 is 45%. 0.45 and 9/20 are equivalent to 45%. The answers are B and D.
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Step-by-step explanation:

The composite figure consists of a square prism and a trapezoidal prism. By adding the volume of each, we obtain the volume of the composite figure.

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The volume of a trapezoidal prism is given by V=\frac{b_1+b_2}{2}\cdot l\cdot h, where b_1 and b_2 are bases of the trapezoid, l is the length of the height of the trapezoid and h is the height. This may look very confusing, but to break it down, we're finding the area of the trapezoid (base) and multiplying it by the height. The area of a trapezoid is given by the average of the bases (\frac{b_1+b_2}{2}) multiplied by the trapezoid's height (l).

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