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kozerog [31]
3 years ago
7

ASAP WILL AWARD BRAINLIEST. Please find the area of all the shapes.

Mathematics
1 answer:
Mandarinka [93]3 years ago
8 0

Answer:

This a trapezium shape.

8+13/2×4=42 in2

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What is 5 x 7 - 12 + 56 - 9 ?
-BARSIC- [3]

Answer: 70

Step-by-step explanation:

5 multiplied by 7 is 35.

35 - 12 is 23.

23 + 56 is 79.

79 - 9 is 70.

4 0
3 years ago
find the volume of a solid that is generated by rotating around the indicated axis the plane region bounded by the giveb curves:
Fofino [41]
Assuming the area below the line y=0 (i.e. x>1) does NOT count, the area to be rotated is shown in the graph attached.

A. Again, using Pappus's theorem,
Area, A = (2/3)*1*(1-(-1))=4/3  (2/3 of the enclosing rectangle, or you can integrate)
Distance of centroid from axis of rotation, R = (2-0) = 2
Volume = 2 π RA = 2 π 2 * 4/3 = 16 π / 3 (approximately = 16.76 units)

B. By integration, using the washer method
Volume = 2\pi\int_{-1}^1(1-x^2)(2-x)dx
=2\pi\int_{-1}^1(x^3-2x^2-x+2)dx
=2\pi[x^4/4-2x^3/3-x^2/2+2x]_{-1}^{1}
=2\pi([1/4-2/3-1/2+2]-[1/4+2/3-1/2-2])
=2\pi(8/3)
= 16 π /3   as before



3 0
3 years ago
8.6 mi<br> 18 mi<br> A) 53.2 mi?<br> C) 106.4 mi?<br> E) 212.8 mi?<br> B) 221 mi?<br> D) 110.5 mi?
GenaCL600 [577]

Answer:

C

Step-by-step explanation:

4 0
3 years ago
What are the roots of the following polynomial equation? x^3 + 72= 5x^2 + 18x (write from least to greatest)
kow [346]

Answer:

2:3

Step-by-step explanation:

8 0
2 years ago
NEED HELP FAST PLEASE.
sineoko [7]
1) C
2)A
from my calculations this should be the rounded answers 
6 0
3 years ago
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