3 years ago

115 = 20 + 2.5x Answers X= 38 X= - 37/38

Mathematics

1 answer:

KIM [24]3 years ago

7 0

The answer would be X=38

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If one feather weighs 700 milligrams, how much will 37 identical feathers weigh plus the basket they are placed in which weighs

vaieri [72.5K]

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7-(-12)=7+(-12)=-5 describe and correct the error in finding the difference 7-(-12)

valina [46]

Answer:

7 - (-12) = 7 + 12 = 19

Step-by-step explanation:

- (-12) is a double negative which means that the minus signs cancel out causing it to to be a positive 12

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This composite shape is a rectangle with a semicircle attached on one end. The diameter of the semicircle is 6 feet.

Ugo [173]

As we can see on the picture we have a rectangle and half of circle.

The areas for half circle and rectangle are:

$A_{rectangle}=a\cdot b \\A_{halfcircle}=\frac{A_{circle}}{2}=\frac{\pi r^2}{2}$

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Now we calculate the areas.

$A_{rectangle}=10\cdot 6=\underline{60} \\A_{halfcircle}=\frac{3.14\cdot3^2}{2}=\underline{14.13} \\A_{total}=A_{rectangle}+A_{halfcircle} =60+14.13=\boxed{74.13\approx74}$

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