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KatRina [158]
3 years ago
7

Please answer this question now

Mathematics
1 answer:
docker41 [41]3 years ago
5 0

Answer:

\boxed{u = 6.0}

Step-by-step explanation:

Using the cosine rule

c^2= a^2+b^2-2abCosC

Here c = u , a = 11 , b = 12 and C = 30

u^2 = 11^2+12^2-2(11)(12)\ Cos 30\\u^2 = 121+144-2(132)(0.866)\\u^2 = 265-228.6\\u^2 = 36.37

Taking sqrt on both sides

u = 6.0   (To nearest tenth)

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Triangle ABC is transformed to create triangle MNL?​
Dahasolnce [82]

Answer:

The transformation is rigid because the corresponding side lengths and angles are congruent.

Step-by-step explanation:

Since we have congruent triangles (not similar triangles), they will have to have the same length and angles throughout your transformation. Therefore, our answer is the 1st Option.

7 0
3 years ago
Use Julia’s work and finish finding the areas of the faces what is the surface area of the rectangular pyramid
hoa [83]

Answer:

The surface area of the rectangular pyramid is SA=109.50\ m^{2}

Step-by-step explanation:

we know that

The surface area of the rectangular prism is equal to the area of the rectangular base plus the area of the four triangular faces

so

SA=(8)(5)+2[14.75]+2[\frac{1}{2}(8)(5)]

SA=40+29.50+40

SA=109.50\ m^{2}

6 0
3 years ago
the perimeter of a square is 20 ft if you increase the length of the square by 2 feet and decrease the width by 1ft what is the
IrinaVladis [17]

Answer:

28 ft squared

Step-by-step explanation:

The 4 sides of a square are equal in length, so if the perimeter is 20ft that means each side would have to be 5ft, (20/4 = 5). If you increase the length by 2ft, one of the sides would now become 7ft (5+2 = 7). If you decrease the length of the other side by 1ft, the length would now be 4ft (5-1=4). Now to find the area, all you have to do is length * width. So you would do 7ft*4ft which is 28ft squared.

4 0
3 years ago
Calculate the slope of a line ​
jeka94
M=-1/2 because you do y1-y2 over x1-x2 and end up with 2/-4 but simplified is -1/2
6 0
2 years ago
Read 2 more answers
Noelle and karina both leave the Internet cafe at the same time, but in opposite directions. If karina travels 9 mph faster than
Vesna [10]
Noelle goes east at N mph.
Karina travels west at N + 9
then their velocity between them is (N + N + 9)
After 8 hours they travel 8(2N + 9) = 232
(2N + 9) = 29
2N = 20
N = 10 mph for Noelle
N+9=19 mph for Karina

7 0
3 years ago
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