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Ksju [112]
3 years ago
13

Given a circle with a diameter of 8, which equation expresses π as the ratio of the circumference of a circle to its diameter? A

) C 4 = π B) C 8 = π C) 4 C = π D) 8 C = π
Mathematics
2 answers:
Nataly_w [17]3 years ago
5 0
C=2pi4
C=8pi
So,Pi=C/8
s344n2d4d5 [400]3 years ago
3 0

Answer: inconclusive

Step-by-step explanation:

The Diameter=8;

Circumference, C= pie X D= pie X 8= 8 pie;

So pie = C/ D = C/ 8

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aivan3 [116]

Answer:

DC

Step-by-step explanation:

ABCDE ≅ GHJDF

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4 0
3 years ago
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A ​used-boat dealership buys a boat for ​$2800 and then sells it for ​$4000. What is the percent​ increase?
Rudik [331]

Answer:

Step-by-step explanation:

percent increase = increase divided by original number x 100

                           

increase is the difference between the two numbers...

new number - original number.....4000 - 2800 = 1200

percent increase = (1200 / 2800) x 100

                            = 0.42857 (round to .4286) x 100

                             = 42.86 %.....if you need it rounded to the nearest percent, it      would be 43% increase

6 0
3 years ago
Which expression could represent a rational number?<br> A. -b<br> B. a + b<br> C. ab<br> D. b^2
leva [86]

The answer for the following question is A) -b

4 0
2 years ago
Tobin rows 2 miles per hour faster than her opponent. If it takes Tobin 30 minutes to finish a race, and it takes her opponent 4
Sunny_sXe [5.5K]
If we represent Tobin's speed as x, we can write her opponent's speed as 
x-2 (since Tobin is 2 more than them). In addition, since it's in miles per hour, and 45 minutes is 3/4 of an hour, we can say that 3/4ths of her speed in miles per hour is how long the race is, so (3/4)(x-2)=distance of race. In addition, since it only took Tobin 30 minutes, and 30 minutes is half an hour, x/2 (half of her miles per hour) is the length of the race, so (3/4)(x-2)=(1/2)x. Expanding it, we get 3x/4-6/4=x/2. Subtracting x/2 (or 2x/4) from both sides, we get x/4-6/4=0 and by adding 6/4 to both sides we get x/4=6/4. Multiplying 4 to both sides, we get that x=6=Tobin's speed in miles per hour
6 0
3 years ago
ZA and ZB are vertical angles. If mZA= (5x – 4) and mZB = (2x – 1)º, then find the value of x. INI​
natulia [17]

Answer:

x = 1

Step-by-step explanation:

It is given that,

∠A and ∠B are vertical angles.

∠A = (5x – 4) and ∠B = (2x – 1)

We need to find the value of x.

We know that, the vertical angles are equal. So,

∠A=∠B

(5x – 4)=(2x – 1)

Taking like terms together,

5x-2x = 4-1

3x=3

x = 1

So, the value of x is equal to 1.

4 0
2 years ago
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