So hard! please help!

Mathematics

2 answers:

Sergeeva-Olga [200]2 years ago

8 0

Answer:

please take a closer picture. :)

Step-by-step explanation:

Viefleur [7K]2 years ago

8 0

$7,158.74

Maybe you should consider deleting this because you can see almost your full name.

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Equation for a circle with a diameter that has endpoints at (2, –5) and (8, –9)

chubhunter [2.5K]

The standard form for the equation of a circle is :

(x−h)^2+(y−k)^2=r2 ----------- EQ(1)
 where handk are the x and y coordinates of the center of the circle and r is the radius.
 The center of the circle is the midpoint of the diameter.

So the midpoint of the diameter with endpoints at (2,-5)and(8,-9) is :

((2+(8))/2,(-5+(-9))/2)=(5,-7)

So the point (5,-7) is the center of the circle.

Now, use the distance formula to find the radius of the circle:

r^2=(2−(5))^2+(-5−(-7))^2=9+4=13

⇒r=√13

Subtituting h=5, k=-7 and r=√13 into EQ(1) gives :

(x-5)^2+(y+7)^2=13

5 0

3 years ago

Select the correct scientific notation form of this numeral.

yawa3891 [41]

Answer:it’s the Third one

Step-by-step explanation:

1.263 move the decimal 3 times and you get the awnser

6 0

3 years ago

Read 2 more answers

Please Help....................................

Olegator [25]

The juice drink that is the most popular with customers is Lemon Lift

8 0

3 years ago

A study conducted by the Center for Population Economics at the University of Chicago studied the birth weights of 623 babies bo

Margaret [11]

Answer:

The estimation for the number of newborns who weighed between 1724 grams and 5172 grams is 595.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 3448, \sigma = 862$