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Harlamova29_29 [7]
3 years ago
13

Someone please help me

Mathematics
2 answers:
marissa [1.9K]3 years ago
4 0
I kinda have a feeling its eighter pentagonal prism and/or pentagonal cylinder
dalvyx [7]3 years ago
3 0
The answer is pentagonal prism

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A rectangle has a length of 12 yards less than 3 times its width. If the area of the rectangle is 135 square yards, find the len
Aleonysh [2.5K]

Answer:

The length is 15 yards

Step-by-step explanation:

Given

Represent the width with W and length with L: So

Area = 135yd^2

L=3W - 12

Required

Determine the length of the rectangle:

Area is calculated as thus:

Area = L * W

Substitute 3W - 12 for L and 135 for Area

135= (3W - 12) * W

135= 3W^2 - 12W

Reorder:

3W^2 - 12W - 135= 0

Divide through by 3

W^2 - 4W - 45 = 0

Expand:

W^2  - 9W + 5W - 45 = 0

W(W  - 9) + 5(W - 9) = 0

(W + 5)(W-9) = 0

W + 5 = 0 or W - 9 = 0

W = -5 or W = 9

But width can't be negative

So:

W = 9

Recall that: L=3W - 12

L = 3 * 9 - 12

L = 15

<em>Hence, the length 15 yards</em>

4 0
3 years ago
first, measures the triangle's angles. They are all 60 degrees. Then, measures the sides. Side 1 is 6 cm long. Side 2 is also 6
jenyasd209 [6]

Answer:

The correct answer is 6 cm.

Step-by-step explanation:

The measure of all angles of the triangle is given to be 60 degrees. This invariably means we are talking about an equilateral triangle as all angles of an equilateral triangle are equal.

Also all sides of an equilateral triangle is known to be equal. Therefore the measure of all sides of the concerned triangle are equal.

Given the measure of two length of sides are 6 cm respectively.

Therefore the length of side 3 is 6 cm, equal to the other two sides.

6 0
3 years ago
Convert 1200 degrees into radians
poizon [28]
The answer to ur question is 20.94395. 
4 0
3 years ago
Read 2 more answers
One third of a number t is equal to 7
Vikentia [17]
If one third of t is 7 than t is equal to 21
3 0
3 years ago
Read 2 more answers
How to solve the problem and the answer plz.
BlackZzzverrR [31]

Answer:

x° =125° y°= 125°

Step-by-step explanation:

55° + x° = 180° because they are complementry angles

solve for x by subtracting 55° from both sides

x° = 125°

x° and y° is equal because they are vertical angles

3 0
3 years ago
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