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Step2247 [10]
4 years ago
8

Okay last one but 5(n^2 + n) – 3(n^2 – 2n)?

Mathematics
2 answers:
frosja888 [35]4 years ago
5 0

Answer =2n^2+11n

you welcome:)

blondinia [14]4 years ago
5 0
  • Answer:

<em> 2n² + 11n</em>

  • Step-by-step explanation:

<em>5(n² + n) – 3(n²2 – 2n) =</em>

<em>= 5n² + 5n - 3n² + 6n</em>

<em>= 2n² + 11n</em>

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What is the area of the composite shape<br> A pentagon is shown.
natali 33 [55]

Answer:

37in.^2

Step-by-step explanation:

So if the triangles at the top have a hypotenuse of 5, and a length of 4, then doing reverse Pythagorean theorem, you find out that the width is 3.a^{2} +b^{2} =c^{2}. so reverse of that for this problem would be c^{2} -b^{2} =a^{2} and if we plug it in, we get 25 -16=9 and the square root of 9 is 3. so if we find the are of the triangle, 3*4*1/2=6 and there are 2 triangles so 12 for both triangles. The square is 5*4=20. and the smaller triangles on the side are 1*5*1/2=2.5, and there are 2 traingles so 2.5*2= 5. So 5+20+12=37. You can do this on most calculators, and please put my answer as the brainliest.✌

4 0
2 years ago
A building casts a shadow 48feet long. At the same time,a 40 foot tall flagpole casts a shadow 9.6 feet long. What is the height
max2010maxim [7]
Let the height of the shadow be x.
Ratio of length of shadow to height: 48/x = 9.6/40
x = (48 x 40)/9.6 = 200 feet.
8 0
4 years ago
Find the greatest common factor and the least common multiple of 16 and 20. The prime factorizations of each number are given.
11111nata11111 [884]

Answer:

i feel like its that one number

Step-by-step explanation:

i found one

4 0
3 years ago
Is the ratio 4.2:1.5 proportional to the ratio 12.6:4.5
VashaNatasha [74]
That's true they are proportional 
5 0
3 years ago
Help asap. yes i will give brainliest
Oxana [17]

Answer:

  1. A = 1.5
  2. B = -1/3
  3. C = -4/3

Step-by-step explanation:

For A:

  1. A is smack in the middle of 1 and 2, so it it 1 1/2 or 1.5 (same thing)

For B:

  1. Each tick mark between the numbers represents 1/3
  2. B is on the first tick mark between 0 and -1, so therefore it is -1/3

For C:

  1. C is on the first tick mark between -1 and -2
  2. That means C is -1 1/3
  3. -1 1/3 = -4/3

I hope this helps!

8 0
3 years ago
Read 2 more answers
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