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Burka [1]
3 years ago
13

Which expression is equivalent to the given expression?

Mathematics
2 answers:
Elan Coil [88]3 years ago
8 0

<em>Answer should be B as both values in the expression need to be negative after expanding.</em>


natali 33 [55]3 years ago
6 0
The best and most correct answer among the choices provided by the question is the third choice, −2(1/4y−1/8)−2(1/4y−1/8).

Evaluate this equation and we will get <span>−(1/2y+1/4)−(1/2y+1/4).
</span>
Hope my answer would be a great help for you.    If you have more questions feel free to ask here at Brainly.
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Solve for the rational equation 1/x = x/x+1
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Answer:

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Step-by-step explanation:

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2 years ago
Work out the size of angle x
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Answer:

x=129

Step-by-step explanation:

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5 0
3 years ago
PLEASE PLEASE ANSWER THIS FOR ME I REALLY NEED TO UNDERSTAND IT
dexar [7]

Answer:

See answers below for explanations (answers are in bold)

Step-by-step explanation:

<u>Problem 1 (Top left):</u>

Assuming that the shape is an ellipse, we will use the formula A=πab where a and b are both half the major and minor axis respectively. Since a=9 and b=6, then we have A = π(9)(6) = 54π = 169.646 units^2 as our final answer

<u>Problem 2 (Top right):</u>

Again, we use the same equation as in Problem 1 but this time, a=12 and b=8, so we then have A = π(8)(12) = 96π = 301.593 units^2 as our final answer

<u>Problem 3 (Bottom left):</u>

We can make this irregular shape into a half-ellipse and a rectangle. We would find their separate areas and add them up. The area of the half-ellipse would be A=1/2πab. The value of "a" would be 13.8/2=6.9 since that's the length of the rectangle. The value of "b" would be 3.5, so that means the area of the half-ellipse would be A = 1/2(π)(6.9)(3.5) = 12.075π = 37.935 units^2.  The width and length of the rectangle are 5.4 and 13.8 respectively, so this means the area of the rectangle is 5.4*13.8 = 74.52 units^2. Combining both areas, we get 37.935+74.52 = 112.455 units^2 as our final answer

<u>Problem 4 (Bottom right):</u>

This irregular shape is an ellipse, but a circle is missing from its center. Thus, we must find the area of the circle and ellipse and then subtract the circle's area from the ellipse's area. For the area of the ellipse, a=(15.5/2)=7.75, and b=(7/2)=3.5, making its area A = π(7.75)(3.5) = 27.125π = 85.216 units^2. The area of a circle is A=πr² where "r" is the radius. The radius would be 7/2=3.5, making the circle's area A = π(3.5²) = 12.25π = 38.485 units^2. This means that the shaded area is 85.216-38.435 = 46.781 units^2  

6 0
3 years ago
Which expression is equivalent to 3(5 + 6)?
Ulleksa [173]

Answer:

3(5+6)=33 15+18=33

Step-by-step explanation:

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4 0
3 years ago
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KiRa [710]

Answer:

Step-by-step explanation:

diameter~d=\sqrt{9^2+5^2} =\sqrt{106} \\r=\frac{\sqrt{106} }{2} \\area=\pi (\frac{\sqrt{106} }{2} )^2=53\pi /2 \approx 83.21~square~units.

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