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SCORPION-xisa [38]
3 years ago
8

The circumference of a circle is 9.45cm.

Mathematics
1 answer:
Fudgin [204]3 years ago
8 0

Answer:

D = 3 cm

Step-by-step explanation:

Given that,

The circumference of a circle is 9.45cm.

We need to find the length of the diameter.

The formula for the circumference of a circle is given by :

C=2\pi r

We know that, Diameter = 2r

So,

C=D\pi\\\\D=\dfrac{C}{\pi}\\\\D=\dfrac{9.45}{\pi}\\\\D=3\ cm

So, the length of diameter is equal to 3 cm.

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Find the mean absolute deviation <br>of the data set 65, 75, 64, 60, 64, 20, 80, 125?​
galina1969 [7]

Answer:

Step-by-step explanation:

65 + 75 + 64 + 60 + 64 + 20 + 80 + 125 = 553

since there are 8 numbers in the data set, divide by 8

Ans: 69.125

3 0
3 years ago
A rectangle has an area of 100 cm he base of the rectangle is 25 cm.
Brrunno [24]
The correct answer is 4
100=25/X
X=4

6 0
4 years ago
1) Eliot and William went hiking. They went at the same speed. Eliot's hike was 8 miles, and William's hike was 12 miles. It too
Vitek1552 [10]

Answer:

1) 2 hours

2) 96 miles

Step-by-step explanation:

1) Eliot and William went hiking. They went at the same speed. Let x mph be their speed.

<u>Elliot:</u>

Distance = 8 miles

Speed = x mph

Time =\dfrac{8}{x} hours

<u>William:</u>

Distance = 12 miles

Speed = x mph

Time =\dfrac{12}{x} hours

It took Eliot 40\ min=\dfrac{40}{60}\ hour=\dfrac{2}{3}\ hour less than William, then

\dfrac{8}{x}+\dfrac{2}{3}=\dfrac{12}{x}\\ \\\dfrac{2}{3}=\dfrac{12}{x}-\dfrac{8}{x}\\ \\\dfrac{2}{3}=\dfrac{4}{x}\\ \\2x=3\cdot 4\ \ [\text{Cross multiply}]\\ \\2x=12\\ \\x=6\ mph

So, William's hike was

\dfrac{12}{6}=2

hours long.

2) <u>Initially:</u>

Distance = 120 miles

Speed = 55 mph

Time =\dfrac{120}{55}=2\dfrac{10}{55}=2\dfrac{2}{11}\ hours

<u>Final:</u>

Speed = 44 mph

Time =2\dfrac{2}{11} hours

Distance =44\cdot 2\dfrac{2}{11}=44\cdot \dfrac{24}{11}=4\cdot 24=96\ miles

8 0
3 years ago
Help on gradpoint!!!
weqwewe [10]

I think the 3rd one, please let me know if I'm wrong. I don't want to give others the incorrect answer.

Step-by-step explanation:

2 x -3 <u>(</u><u>x)</u><u> </u>- 1 <u>(</u><u>y)</u><u> </u>- 2 x -1 <u>(</u><u>z)</u><u> </u>= -5

7 0
3 years ago
In order to accumulate enough money for a down payment on a​ house, a couple deposits $608 per month into an account paying 6% c
____ [38]
Hi there
The formula of the future value of annuity ordinary is
Fv=pmt [(1+r/k)^(kn)-1)÷(r/k)]
Fv future value?
PMT monthly payment 608
R interest rate 0.06
K compounded monthly 12
N time 6years
So
Fv=608×(((1+0.06÷12)^(12×6)
−1)÷(0.06÷12))
=52,536.58...answer

Good luck!
8 0
3 years ago
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