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3 years ago

What is the radius and diameter of the following circle?

Mathematics

1 answer:

natka813 [3]3 years ago

3 0

Answer:

Diamter is 14 and radius is 7

Step-by-step explanation:

May I have barinliest answer please?

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8. Round 1.906 to the nearest CENT

sukhopar [10]

2 cents unless 1 is a dollar then $1.10

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3 years ago

A university conducted a study of whether running is healthy for men and women over age 50. During the first eight years of the

mestny [16]

Answer:

From given data, University conducted a study of whether running is healthy for men and women over age 50. During the first eight years of the study, 1.9% of the 454members of 50 plus fitn

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3 years ago

Can some one please help me ???

Stella [2.4K]

Scientific notation means -- one digit before the decimal point, all the others after it; -- count jow many places you have to move the decimal point to make the number look like that; -- left is positive, right is negative; -- after the digits, write " x 10 to the power of" that number from moving the point. / / / / You're starting with 0.006468 . You want it to be 6.468 . You have yo move the decimal point 3 places to the right ... that makes the power -3 . Finally, in scientific notation, it's 6.468 x 10 to the -3 power.

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3 years ago

Jackie received 68% of the votes in an election. In a random sample of 30 eligible voters, 18 said they voted for Jackie.

riadik2000 [5.3K]

Answer:

p = 0.68 and p^ = 0.6

Step-by-step explanation:

Jackie received 68% of the votes in an election.

Here p is the decimal equivalent of 68 %.Hence ,

p = 0.68

Now we have taken a sample of 30 people from the total number of voters and we have to find the percentage of votes that Jackie gets in this .

Out of 30 people Jackie got 18 votes. Hence,

p^ = $\frac{18}{30}$ = 0.6

Hence the values are

p = 0.68 and p^ = 0.6

In the random sample we have taken the probability of Jackie has decreased but it will be compensated by another sample where it will be more.

8 0

3 years ago

Find an equation of the circle that satisfies the given conditions. Endpoints of a diameter are P(−2, 1) and Q(8, 9)

IrinaK [193]

Answer:

Equation of the circle (x-3)²+(y-5)²=(6.4)²

x² -6x +9 +y² -10y +25 = 40.96

Step-by-step explanation:

Step(i):-

Given endpoints of diameter P(−2, 1) and Q(8, 9)

Centre of circle = midpoint of diameter

Centre = $(\frac{-2+8}{2} ,\frac{1+9}{2} )$

Centre (h, k) = (3 , 5)

Step(ii):-

The distance of two end points

PQ = $\sqrt{(x_{2}-x_{1} )^{2} +(y_{2} -y_{1} )^{2} }$

$PQ= \sqrt{(8+2 )^{2} +(8 )^{2} }$

PQ = √164 = 12.8

Diameter d = 2r

radius r = d/2

Radius r = 6.4

Final answer:-

Equation of the circle

(x-h)²+(y-k)² = r²

(x-3)²+(y-5)²=(6.4)²

x² -6x +9 +y² -10y +25 = 40.96

x² -6x +y² -10y = 40.96-34

x² -6x +y² -10y -7= 0

4 0

4 years ago