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Makovka662 [10]
3 years ago
9

Circle O has a circumference of approximately 250(pie) ft.

Mathematics
1 answer:
cluponka [151]3 years ago
7 0

try 80 its the only one that makes a fleas wing of sense

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A her of 40 horses has 9 white and some black horses. What is the ratio of white to black horses?​
solmaris [256]

Answer:

The number of white horse to white horse is 9 : 31

Step-by-step explanation:

Given as :

The Total number of horses = 40

The number of white horses = 9

Let the number of black horses = x

So, x + 9 = 40

Or x = 40 - 9 = 31

∴ The number of black horses = 31

Now,  The ratio of while to black horses = number of white horse : number of black horse

Or, number of white horse : number of black horse = 9 : 31

Hence The number of white horse to white horse is 9 : 31   Answer

7 0
3 years ago
Can anyone solve this triangle?
kirill [66]

Answer:

Step-by-step explanation:

a^2+6^2 = 23^2

a^2 = 23^2 - 6^2

a^2 = 529 - 36

a^2 = 493

a = √493

a = 22,20

7 0
4 years ago
The graph of y>1/2x-2 is shown. Which sweet contains only points that satisfy the equality
vazorg [7]

Answer:

hi I dont think I can help I am only 9 year old and am in grade 5 so

4 0
3 years ago
A marine biologist wanted to construct a t interval to estimate the mean weight of marine otters using 98% confidence. They took
KatRina [158]

Answer:

CI 98 %  =  ( 3.332  ;  5.668 )

t(c)  =  2.9979

Step-by-step explanation:

Confidence Interval  CI  98 %   then  α  =  2 %   α  =  0,02    α/2  =  0.01

Sample information:

Sample size    n  =  8

sample mean     x  =  4.5

standard deviation of sample    s  =  1.1 kg

degree of freedom     df  =  n  -  1     df  =  8  -  1    df  =  7

With    α/2  0.01  and  df  =  7 from t-studente table we find   t(c)

t(c)  =  2.9979

CI 98 %  =  (   x  ±  t(c) * s/√n )

CI 98 %  =  (  4.5  ±  2.9979 *  1.1/ √8 )

CI 98 %  =  (  4.5  ±  3.2976/2.8228 )

CI 98 %  =  (  4.5  ± 1.168 )

CI 98 %  =  ( 3.332  ;  5.668 )

6 0
3 years ago
You can use a system of equations to graph and solve the polynomial equation 3x^3 + x = 2x^2 +1 which statement is true?
Anna35 [415]

Answer:

The y-coordinates of the solutions to the system and the zeroes of the equation are not equal.

Step-by-step explanation:

7 0
4 years ago
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