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bazaltina [42]
3 years ago
5

The area of a rectangular wall of a barn is 80 square feet. The lenth is 12 feet longer than twice its width. Find the length an

d width of the barn.
Mathematics
1 answer:
aivan3 [116]3 years ago
8 0
Do you have the answer key to this question if so can you plz tell me the correct answers to check if my work is right
Thanks!
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Write down the exact value of:<br> a) cos 30°<br> b) sin 45°<br> c) tan 30°
Alexus [3.1K]

Answer:

a) 0.86602540378

b) 0.70710678118

c) 0.57735026919

Step-by-step explanation:

4 0
3 years ago
Factorise 3c^2-c<br><br><br> Please help me quick
Dafna11 [192]

Answer:

c(3c - 1)

Step-by-step explanation:

3c² - c

Common factor = c

Factored:

c(3c - 1)

5 0
3 years ago
A
rjkz [21]

The other leg is 12cm long.

Step-by-step explanation:

Given,

Hypotenuse = c = 15cm

One leg = a = 9cm

Other leg = b

As the triangle is right angled, therefore, using Pythagoras theorem;

a^2+b^2=c^2\\(9)^2+b^2=(15)^2\\81+b^2=225\\b^2=225-81\\b^2=144\\

Taking square root on both sides;

\sqrt{b^2} =\sqrt{144} \\b=12\ cm

The other leg is 12cm long.

Keywords: triangle, square root

Learn more about triangles at:

  • brainly.com/question/5461619
  • brainly.com/question/5510873

#LearnwithBrainly

3 0
3 years ago
The librarian noticed that 60% of seventh graders checked out fantacy books. About how many of 240 seventh graders would check o
ehidna [41]

Answer:

The correct answer is 144.

Step-by-step explanation:

The librarian noticed that 60% of total seventh graders checked out fantasy books from the library.

Total number of seventh graders is given to be 240.

Number of seventh grade students who checked out fantasy books = 60% of 240 = 0.6 × 240 = 144.

Thus out of 240 seventh graders 144 of them would check out  a fantasy book from the library.

4 0
3 years ago
Name the relationship between the angles below. What is the sum of the angles? Explain how you would find the missing angle. Exp
DiKsa [7]

Answer:

would find the missing angle. Explain each step. (replace with 120 & x)

Name the relationship between the angles below. What is the sum of the angles? Explain how you would find the missing angle. Explain each step. (replace with 120 & x)

Step-by-step explanation:

Name the relationship between the angles below. What is the sum of the angles? Explain how you would find the missing angle. Explain each step. (replace with 120 & x)

8 0
3 years ago
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