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Strike441 [17]
3 years ago
7

What statement is NOT always true

Mathematics
1 answer:
Step2247 [10]3 years ago
8 0
The statement "the diagonals are perpendicular ti each other" is sometimes true and sometimes false
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Which of these countries has the greatest population density? Which has the least? Provide an explanation and proof for your ans
erica [24]

Answer:

The greatest is Denmark

The least is US

Step-by-step explanation:

Population density is people/ area

US : 272648000/9364520 = 29.115

Denmark : 5248000/42077=124.72372

Ghana :18339000/237533=77.20611

The greatest is Denmark

The least is US

4 0
3 years ago
Solve : X^2 - 3x = -8<br><br><br> And <br><br><br> Solve : -2x^2 - 16x - 44 = 0
Aleonysh [2.5K]

Answer:

X = 8/3 + X^2/3

X = -4 ± i\sqrt{6}

Step-by-step explanation:

5 0
4 years ago
Solve using the elimination method. 2x + 7y = 36 <br>6x - 7y = - 60 ​
lorasvet [3.4K]
Point form: (-3,6)
Equation form: x=-3, y=6
7 0
3 years ago
Read 2 more answers
Find the total area for the pyramid with the equilateral base.<br><br> T. A. =
Lena [83]

Answer:

T.A. = 144 + 36√3 units²

Step-by-step explanation:

∵ The total surface area of the pyramid = the sum of the area of

   the four  faces (one base and 3 side faces)

∵ The 3 side faces have the same dimensions 12 , 10 , 10

∴ the area of the 3 faces = 3 × 1/2 × 12 × h

∵ The height of each triangle is ⊥ to its base

∵ The triangle are isosceles

∴ The height bisects the base

∴ h² = 10² - 6² = 64

∴ h = √64 = 8

∴ The area of the 3 triangles = 3 × 1/2 × 12 × 8 = 144 units²

∵ The base is equilateral Δ with side length 12

∵ Area equilateral triangle = 1/4 × s² × √3

∴ The area of the base = 1/4 × (12)² × √3 = 36√3 units²

∴ T.A. = 144 + 36√3 units²

7 0
3 years ago
Two stacks of quarters are shown. Both stacks have the same amount of quarters.
Sophie [7]

Answer:

in geometry nation its in two solids of equal altitude, parallel to and at the same distance.

Step-by-step explanation:

just got it wrong :(

7 0
3 years ago
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