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Dmitriy789 [7]
3 years ago
6

I want to talk to some one

Mathematics
2 answers:
irinina [24]3 years ago
7 0

Answer: me too

Step-by-sexplexplanation: anation: hehehueehhe

11111nata11111 [884]3 years ago
6 0

Answer:

Hi

Step-by-step explanation:

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Please help I need two other related equations to the problem C = K − 273.15.<br> please hurry.
N76 [4]

k=273.15+c

that's one of them

3 0
4 years ago
One spool contains ​ 4 2/3 ​ yards of twine. A second spool contains 11 feet of twine.
frez [133]

Answer: The correct answer is option (C); 25 feet

Step-by-step explanation: The standard of conversion between feet and yards is given as;

3 feet = 1 yard.

In other words, in every yard you will find times 3 feet. So in a spool of twine that contains four and two-thirds (4 2/3) yards of twine, conversion to feet would be given as;

X feet = (4 2/3) x 3

X feet = (14/3) x 3

X feet = 14

For the second spool the measurement is 11 feet of twine, so the total measurement would be derived as,

Spool 1 + Spool 2 = Total

14 + 11 = Total

25 = Total

Hence, the total measurement of twine would be 25 ft.

8 0
4 years ago
The perimeter of the dodecagon is 54 cm. by joining every other vertex of the dodecagon a hexagon is formed. if each side of the
lawyer [7]

Answer:

x = 8.69

Step-by-step explanation:

we know that the perimeter of the dodecagon is 54, so each edge will be 54/12

54/12 = 4.5 cm

if we draw the lines to remove 6 vertices and form a hexagon, 6 triangles with 2 sides of 4.5 cm are formed.

we know that the angle of each vertex is 150 ° because it is a dodecagon

if we apply the law of cosines we can take the other side of the triangle, since we only need 2 side and the opposite angle to the side we want to know

a would be our x

b = 4.5

c = 4.5

A = 150°

a^2 = b^2 + c^2 - 2bc * cos (A)

x^2 = 4.5^2 + 4.5^2 - 2 * 4.5 * 4.5 * cos (150)

x^2 = 20.25 + 20.25 - 40.50 * -0.866

x^2 = 40.50 + 35.07

x = √ 75.57

x = 8.69

4 0
3 years ago
Which polynomial equation is a valid identity?
yulyashka [42]

Answer:

D

Step-by-step explanation:

Expand factors using FOIL

A

(x + 1)² - x² = x² + 2x + 1 - x² = 2x + 1 ≠ 1 ← False

B

(5x - 2)² + 4 = 25x² - 20x + 4 + 4 = 25x² - 20x + 8 ≠ 25x² - 20x ← False

C

(x + 2y)(x - 2y) = x² - 4y² ≠ x² + 4xy - 4y² ← False

D

(2x + y)(- y - 2x) = - 2xy - 4x² - y² - 2xy = - 4x² - y² - 4xy ← True

4 0
3 years ago
What is 88x-16x^{2}?
goldenfox [79]
The answer is 8x(11-2x)
5 0
3 years ago
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