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GaryK [48]
3 years ago
14

Please Help

Mathematics
1 answer:
Fudgin [204]3 years ago
3 0

subtract 1/4 from 7/8

find common denominator, in this case 8

1/4 = 2/8

now you have 7/8 - 2/8 = 5/8 hour left

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A sector of a circle has a central angle to 10° and arc length 28 pi units what is the radius of the circle
Dennis_Churaev [7]

Answer:

Radius = 504units

Step-by-step explanation:

Angle = 10°

Length of arc = 28π units

L = ∅/360 × 2πr

28π = 10/360 × 2πr

28π = 1/36 × 2πr

2πr = 28π × 36

π cancelled off.......

2r = 28 × 36

r = (28 × 36)/2

r = 28 × 18

r = 504units

8 0
3 years ago
-12 + 8a = -a + 6(2a - 2)
pogonyaev

Answer:

41/6

Step-by-step explanation:

-12+81=-1+6(2a-2)

first distribute:

-12+81=-1+12a-12

combine like terms:

<u>-12+81</u>= <u>-1</u>+12a<u>-12</u>

69=-13+12a

add -13 with 69:

82=12a

divide 82 and 12:

82/12= 41/6

3 0
3 years ago
Read 2 more answers
A fair dice is rolled 3 times in a row. The outcomes are shown below.
maks197457 [2]

Answer:

1/3

Step-by-step explanation:

I think this is 1/3 because it is a ratio of successful outcomes to total number of outcomes..

Ex. Rolling a 6 sided dice.. you roll a 5...  it would be 1/6.

Hope that makes sense.

8 0
3 years ago
Select the polynomial that is a perfect square trinomial.
Alina [70]

Answer:

  16x^2 -8x +1

Step-by-step explanation:

The square of a binomial expands as ...

  (a +b)^2 = a^2 +2ab +b^2

So, you need to look for a trinomial with first and last terms that are perfect squares and a middle term that is double the product of the roots of those terms.

This pattern matches ...

  16x^2 -8x +1 = (4x -1)^2

6 0
3 years ago
What is the surface area of a fear with a diameter of 2.7 inches? Use 3.14 for π
GrogVix [38]

Answer:

22.8906 sq in

Step-by-step explanation:

SA of a sphere = 4 π r^{2}

r = 2.7 / 2 = 1.35

4 x 3.14 x 1.35^{2} = 22.8906

5 0
3 years ago
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