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Anika [276]
3 years ago
9

BRAINLIESTT ASAP! PLEASE HELP ME :)

Mathematics
2 answers:
myrzilka [38]3 years ago
7 0
Circumference is 25.13
area is 50.27
spin [16.1K]3 years ago
6 0
<h3>Answers:</h3><h3>Exact area = 16pi   square meters</h3><h3>Exact circumference = 8pi    meters</h3>

Note how the units are not the same for each. The area involves square units while the circumference is a linear unit.

==========================================================

Work Shown:

d = 8 is the diameter

r = d/2 = 8/2 = 4 is the radius

A = area of circle

A = pi*r^2

A = pi*4^2

A = pi*16

A = 16pi

---------

C = circumference of the circle

C = pi*d

C = pi*8

C = 8pi

Alternatively,

C = 2*pi*r

C = 2*pi*4

C = 2*4*pi

C = 8pi

You might be interested in
A camera flash can create what in a photograph of a person?
nevsk [136]

This isn't really mathematics but I can give you an answer.

Assuming, it's in the dark (cuz in the light, why would you use flash), a person in the photograph can gain a red-eye (in the photo).

The only one I can think of is red eye.

4 0
3 years ago
Christine has always been weak in mathematics. Based on her performance prior to the final exam in Calculus, there is a 40% chan
azamat

Answer:

There are a 25% probability that Christine fails the course.

Step-by-step explanation:

We have these following probabilities:

A 50% probability that Christine finds a tutor.

With a tutor, she has a 10% probability of failling.

A 50% probability that Christine does not find a tutor.

Without a tutor, she has a 40% probability of failing.

Probability that she fails:

10% of 50%(fail with a tutor) plus 40% of 50%(fail without a tutor). So

P = 0.1*0.5 + 0.4*0.5 = 0.25

There are a 25% probability that Christine fails the course.

6 0
3 years ago
Which phrase represents the algebraic expression 3p+6/7p-9
omeli [17]

Answer:

The answer is the sum of three times a number and six, divided by the difference of seven times the number and nine

Step-by-step explanation:

3p = three x a number

7p = seven x a number

3p+6 = sum of three x a number plus six

7p-9 = difference of seven x the number minus nine

(3p+6)/(7p-9) = sum of three times x number plus six, divided by the difference of seven x the number - nine

7 0
3 years ago
Need help asap today by 5<br>​
WINSTONCH [101]

Answer:

I put a photo of the answers.

Step-by-step explanation:

For the problems, I turned the whole under into a fraction, flipped the second fraction and multiplied.

7 0
3 years ago
Desmond's Desserts made a batch of fresh scones with 2/3 of a pound of butter and 1/2 of a
NemiM [27]

\frac{1}{6} or 0.167 pounds more butter was used than sugar

<em><u>Solution:</u></em>

Given that, Desmond's Desserts made a batch of fresh scones with 2/3 of a pound of butter and 1/2 of a  pound of sugar

<em><u>To find: Amount of butter used than sugar</u></em>

From given information,

\text{Butter used} = \frac{2}{3} \text{ pound }

\text{Sugar used } = \frac{1}{2} \text{ pound }

To find how much butter is used than sugar, find the difference between them

Difference = Butter\ used - Sugar\ used

Difference = \frac{2}{3} - \frac{1}{2}\\\\Difference = \frac{2 \times 2-1 \times 3}{3 \times 2}\\\\Difference =\frac{4-3}{6}\\\\Difference =\frac{1}{6} = 0.167\\\\

Thus \frac{1}{6} or 0.167 pounds more butter was used than sugar

5 0
3 years ago
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