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3 years ago

50 POINTS STUCK

Mathematics

1 answer:

hram777 [196]3 years ago

7 0

Answer:

C. 62.8 units

Step-by-step explanation:

Use distance formula or Pythagorean theorem.

Pythagorean-

6^2+8^2= radius^2

100= radius^2

10= radius

radius= r

Use circumference formula.

C=2pir

C=2pi10

C=62.83

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NemiM [27]

Answer:

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Step-by-step explanation:

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2 years ago

A roll of ribbon was 12 meters long. Diego cut 9 pieces of ribbon that were 0.4 meters each to tie some presents. He then used t

Alex777 [14]

Answer:

8.4 meters of ribbon left and 14 wreaths made

Step-by-step explanation:

9 * 0.4 = 3.6 meters used for presents

12 - 3.6 = 8.4 meters left for wreaths

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2 years ago

Read 2 more answers

Solve the equation x^2-4x+85=0

lara [203]

Can't factor
use quadratic
for
ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^2-4ac} }{2a}$

given
1x^2-4x+85=0
a=1
b=-4
c=85

x= $\frac{-(-4)+/- \sqrt{(-4)^2-4(1)(85)} }{2(1)}$
x= $\frac{4+/- \sqrt{16-340} }{2}$
x= $\frac{4+/- \sqrt{-324} }{2}$
x= $\frac{4+/- (\sqrt{-1})(\sqrt{324}) }{2}$
remember that √-1=i
x= $\frac{4+/- i(\sqrt{324}) }{2}$
x= $\frac{4+/- i(18) }{2}$
x=2+/-9i

x=2+9i or x=2-9i

3 0

3 years ago

Will mark brainlist:)

ella [17]

Answer:

The length of the missing side is 7 yards

Step-by-step explanation:

Simply subtract 9 from 16

16-9=7

The length of the missing side is 7 yards

Hope this helps! Plz award Brainliest : )

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2 years ago

Read 2 more answers

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Strike441 [17]

Solve it yourself

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2 years ago