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ikadub [295]
3 years ago
12

Helpppppp I NEED THIS HELP

Mathematics
2 answers:
ohaa [14]3 years ago
8 0

Answer:

A

Step-by-step explanation:

padilas [110]3 years ago
4 0

Answer:

A

Step-by-step explanation:

we need to focus on getting X alone so we remove things attached by symbols first by adding the opposite to both sides, so we need to add -2 to both sides

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20c + 8d +10c - 5d<br><br><br> please answer you would get 15 points!
Rudik [331]
I think 30c+3d would be the correct answer.
4 0
3 years ago
Read 2 more answers
● For the polygon you are assigned, assume the radius is 1 unit . Round all answers to the nearest hundredth , if necessary.
lorasvet [3.4K]

9514 1404 393

Answer:

  1) 135°

  2) 0.77 units

  3) 0.92 units

  4) 6.12 units

  5) 2.83 square units

Step-by-step explanation:

1) The exterior angle at any vertex is 360°/n, where n is the number of sides. For the octagon, the exterior angle is 360°/8 = 45°. The interior angle will be the supplement of this: 180° -45° = 135°.

The measure of each interior angle is 135°.

__

2) Each sector of the octagon is an isosceles triangle with a central angle of 45° (also 360°/8). Since the radius is 1 unit, the length of one side is twice the sine of half the central angle.

  s = 2·sin(45°/2) ≈ 0.765367

The length of one side is about 0.77 units.

__

3) Similarly, the apothem is the cosine of half the central angle:

  a = cos(45°/2) ≈ 0.923880

The apothem is about 0.92 units.

__

4) For an octagon, the perimeter is 8 times the length of one side.

  P = 8s = 8(0.765367) ≈ 6.12293

The perimeter is about 6.12 units.

__

5) The area of one sector (isosceles triangle) is given by the formula ...

  A = (1/2)bh

  A = 1/2sa ≈ 1/2(0.765367)(0.923880) ≈ 0.353553

Then the area of the octagon is 8 times this:

  A = 8(sector area) = 8(0.353553) ≈ 2.82843

The octagon area is about 2.83 square units.

3 0
3 years ago
Given A={1,2,3}, B={2,4,6} and C={1,2,3,4,5,6}, then A ∩ (B ∩ C) =
oksian1 [2.3K]

Answer:

Step-by-step explanation:

A={1,2,3}

B={2,4,6}

C={1,2,3,4,5,6}

B∩C={2,4,6}

A∩(B∩C)={1,2,3}∩{2,4,6}={2}

4 0
3 years ago
William has a lemonade stand. Today he made $17.55 in lemonade sales and one third that amount in cookie sales. How much money d
ira [324]
All together he made 23.40
One third of $17.55 is $5.85
When you add $17.55 and $5.85 together you get $23.40
4 0
3 years ago
6w + 2(4w - 7) simplified​
Gemiola [76]

Answer:

14w -14

Step-by-step explanation:

6w + 2(4w - 7)

Distribute

6w+ 8w -14

Combine like terms

14w -14

8 0
3 years ago
Read 2 more answers
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