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lorasvet [3.4K]
3 years ago
8

How to do this question

Mathematics
1 answer:
madam [21]3 years ago
7 0

Answer:

4\sqrt{3} -3\sqrt{2} (or) 2.68556

Step-by-step explanation:

first you're going to simplify the radical expression:

-\sqrt{12} becomes -2\sqrt{3}

\sqrt{18} becomes 3\sqrt{2}

2\sqrt{27} becomes 6\sqrt{3}

your equation should now be -2\sqrt{3} -3\sqrt{2} +6\sqrt{3}

next you're going to collect like terms -2\sqrt{3} +6\sqrt{3} =4\sqrt{3}

so your final answer is 4\sqrt{3} -3\sqrt{2}

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Cd has an endpoint at (2, -1) and a midpoint at (8, 3). which measure is closest to the length of cd
stepladder [879]

Answer:

4\sqrt{13}

Step-by-step explanation:

The length of CD will be twice the distance from the midpoint to the endpoint

To calculate the length use the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (2, - 1) and (x₂, y₂ ) = (8, 3)

d = 2 × \sqrt{(8-2)^2+(3+1)^2}

  = 2 × \sqrt{6^2+4^2}

  = 2 × \sqrt{52}

  = 2 × \sqrt{4(13)}

  = 2 × 2\sqrt{13} = 4\sqrt{13} ← exact length

8 0
4 years ago
Which statements are true?
djyliett [7]

Answer:

All Triangles are closed figure polygons that have three straight sides

Step-by-step explanation:

All 2D shapes are plane figures so this one is false. Three right angles are greater than 180 so this is fake. Polygon and closed figures are shapes with three or more closed sides. And triangles have straight sides.

3 0
3 years ago
What percent of 64 is 48?
melisa1 [442]
75% 
48/64=.75 thus 75%
8 0
4 years ago
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Debbie found a suitcase that was originally 129 but now is on sale for 30% off. If sales tax is 8.75%, what is her final cost?
Marizza181 [45]

Step-by-step explanation:

To find the answer we first multiply 129 by 0.7 since the price descresed 30 percent. each percent is equal to 0.01.

129 * 0.7 = 90.3

Then we multiply 90.3 by 1.0875 since that is the sales tax

90.3 * 1.0875 = 98.2

so the cost is 98.2

6 0
3 years ago
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Pls I need help !!!!!!
Marianna [84]

Answer: m1 m2 and m5 all equal to 135 as well

While m3 m6 and m4 are 45

Why: since they are on a line the two angles together should equal 180. So 180- 135= 45

3 0
3 years ago
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