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sveticcg [70]
3 years ago
6

Need help quickkkkkkkkkkk​

Mathematics
2 answers:
Liula [17]3 years ago
7 0
It’s D the proof is done
goldfiish [28.3K]3 years ago
4 0

Answer:

C. The proof is done.

Step-by-step explanation:

i could be wrong but if i remember correctly QED stands for Quod Erat Demonstrandum

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Plsss hElpp!!!!! TY!!
kari74 [83]

Given:

A circle with diameter 9 cm.

To find:

The area of the circle.

Solution:

The area of a circle is:

A=\pi r^2                   ...(i)

Where r is the radius.

We know that, the diameter of a circle is twice than its radius.

The diameter of the given circle is 9 cm.

r=\dfrac{9}{2}

r=4.5

Substituting r=4.5, \pi =3.14 in (i), we get

A=(3.14)(4.5)^2

A=(3.14)(20.25)

A=63.585

A\approx 63.6

Therefore, the area of the given circle is 63.6.

4 0
3 years ago
Which best defines a pioneer species?
mixas84 [53]
The first species to populate an uninhabited
6 0
2 years ago
If the sphere shown above has a radius of 16 units, then what is the approximate volume of the sphere?​
Nastasia [14]
V≈17157.28 and the radius is 16
4 0
3 years ago
The standard tip in a restaurant is 15% of the bill before tax. Many people in California find the tip by doubling the sales tax
cricket20 [7]
To answer this you could do a couple things. 1. Actually calculate both tips and then subtract them. Here is the math ( assuming it is $60, not 60% that you mean). a. 0.15 x 60 = $9. b. 0.0825 x 2 x 60=$9.90. c. 9.90-9.00= $0.90 difference.

The other strategy would be to find the difference on the percents and then multiply by $60. a. 8.25%x2=16.5%-15%. Difference of 1.5%. b. 0.015 x $60=$0.90.
3 0
3 years ago
Kyra is participating in a fundraiser walk-a-thon. She walks 2 miles in 30 minutes. If she continues to walk at the same rate, d
enyata [817]

Answer:

105

Step-by-step explanation:

105

3 0
3 years ago
Read 2 more answers
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