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4 years ago

Can you help me on 8 and 9 plss

Mathematics

1 answer:

Mandarinka [93]4 years ago

6 0

You were right on both

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]solomon needs to justify the formula for the arc length of a sector. which expression best completes this argument? the circumf

Anna35 [415]

Answer:

$\frac{2 \pi r}{\frac{360^{\circ}}{n^{\circ}}}$ best completes this argument

Step-by-step explanation:

Circumference of circle = $\pi \cdot d$

Where d is the diameter of circle

We are given that if equally sized central angles, each with a measure of n°, are drawn, the number of sectors that are formed will be equal to $\frac{360^{\circ}}{n^{\circ}}$

So, Number of sectors = $\frac{360^{\circ}}{n^{\circ}}$

The arc length of each sector is the circumference divided by the number of sectors

$\Rightarrow \frac{\pi \cdot d}{\frac{360^{\circ}}{n^{\circ}}}$

Diameter d = 2r (r = radius)

$\Rightarrow \frac{2 \pi r}{\frac{360^{\circ}}{n^{\circ}}}$

Option b is true

Hence $\frac{2 \pi r}{\frac{360^{\circ}}{n^{\circ}}}$ best completes this argument

7 0

4 years ago

3 is subtracted from the product of 8 and a number

Jobisdone [24]

Answer: (8 * x) -3

Step-by-step explanation:

The term product refers to multiplication, so let the unknown number be x and multiply it by 8. Then you can subtract 3 afterwards.

*= multiplication

6 0

2 years ago

Write 60 as a product of prime factors

Papessa [141]

60 = 2 x 30
30 = 2 x 15
2 = 2
15 = 3 x 5
Prime factors = 2 x 2 x 3 x 5 = 60.
Hope this helps

4 0

3 years ago

Solve.

BabaBlast [244]

Answer:

x = $\frac{13}6}$ = 2 $\frac{1}{6}$

Step-by-step explanation:

34.2 = 13.4 + 9.6x

20.8 = 9.6x

x = 20.8 / 9.6

x = $\frac{13}6}$

7 0

3 years ago

Find the value of x. x+35 4x

9966 [12]

141x but idk if you are multiplying the 4x but I did

7 0

3 years ago