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VMariaS [17]
3 years ago
12

On a recent test, Shawna was given the following problem:

Mathematics
2 answers:
sashaice [31]3 years ago
6 0

Answer:

Step 2

Step-by-step explanation:

She multiplied by 7 and 25 by 2  instead of 7x7 and 25x25

PSYCHO15rus [73]3 years ago
4 0

Answer:

Step 2. She incorrectly squared the numbers.

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masya89 [10]

Answer:

option C is the answer.

6 0
3 years ago
The arc length of a sector is equal to four times the radius. Express the arc length s
Sveta_85 [38]

Answer:

Step-by-step explanation:

Given that,

The arc length is four times the radius

Let he radius be 'r'

Then, the arc length be 's'

The arc of a sector can be calculated using

s=θ/360 × 2πr

Then, given that s=4r

So, 4r = θ × 2πr / 360

Divide both side r

4 = θ × 2π/360

Then, make θ subject of formula

θ × 2π = 360 × 4

θ = 360 × 4 / 2π

θ = 720 / π

So, area of the sector can be determine using

A = θ / 360 × πr²

Since r = ¼s

Then,

A = (θ/360) × π × (¼s)²

A = (θ/360) × π × (s²/16)

A = θ × π × s² / 360 × 16

Since θ = 720 / π

A = (720/π) × π × s² / 360 × 16

A = 720 × π × s² / 360 × 16 × π

A = s² / 8

Then,

s² = 8A

Then,

s= √(8A)

s = 2 √2•A

6 0
3 years ago
The given amount converted to units?
Alisiya [41]
120 seconds is 2 * 60s
60s is 1 minute, so 2*60s = 2 minutes
4 0
3 years ago
36 diveded to 68251500​
Alja [10]

Answer:

hope this helps :)

4 0
4 years ago
Read 2 more answers
A circular clock with a circumference of 88cm is mounted on a wall.How much area of a wall didn't occupy​
True [87]

Answer:

616 cm^2

Step-by-step explanation:

Steps to derive the answer

1. we are going to first determine the radius from the circumference

2. we would calculate the area

Circumference of a circle = 2nr

n = 22/7

r = radius

88 = 2 x 22/7 x r

Divide both sides of the equation by 2 x 7/22

r = 14

Area of a circle = nr^2

3.14 x 14^2 = 616 cm^2

4 0
3 years ago
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