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3 years ago

The probability that Gerald makes a three-point shot in basketball is 20%. For practice, Gerald will regularly

Mathematics

1 answer:

denpristay [2]3 years ago

6 0

count all the dots that are greater than 10. you'll get 6 dots. the question is asking for the dots 10 and fewer there is 40 dots in total so you subtract

40-6= 34

the answer is 34/40

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Marvin wrote down all of the numbers from 1 to 100. How many times did the digit 8 appear in Marvins's list?

Nata [24]

Answer:

Originally Answered: How many times does 8 occur in 1 to 100? 20 8's occur from 1 to 100. 8, 18, 28, 38, 48, 58, 68, 78, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 and 98.

Step-by-step explaintion: i am 5 million iq brainlist pls

6 0

2 years ago

URGENT! Please Help me solve this question with the Steps

Fofino [41]

Answer:

Step-by-step explanation:

$(p^{\frac{1}{2}})^3=p^{\frac{1*3}{2}}=p^\frac{3}{2}\\\\\sqrt{p^6}=p^\frac{6}{2}=p^\frac{1}{3}\\\\(p^{\frac{1}{2}})^3\sqrt{p^6}=p^\frac{3}{2}p^\frac{1}{3}=p^{\frac{3}{2}+\frac{1}{3}}=p^\frac{11}{6}$

6 0

2 years ago

Find the solution to the equation below.<br> 2x^2+3x-20=0

mariarad [96]

Answer:

x = -4, 5/2

Step-by-step explanation:

A quadratic can be solved may ways, including graphing, factoring, and the quadratic formula. You can also check possible answers by making use of the relationships between solutions and the coefficients.

A graph is attached. It shows the solutions to be -4 and 5/2.

When factored, the equation becomes ...

(2x -5)(x +4) = 0 . . . . . has solutions x=-4, x=5/2 (these make the factors zero)

Using the quadratic formula, the solutions of ax^2 +bx +c = 0 are found from ...

x = (-b±√(b²-4ac))/(2a)

x = (-3±√(3²-4(2)(-20))/(2(2)) = (-3±√169)/4 = {-16, +10}/4

x = {-4, 5/2}

For ax^2 +bx +c = 0, the solutions must satisfy ...

product of solutions is c/a = -20/2 = -10

Only the first and last choices have this product.

sum of solutions is -b/a = -3/2

Only the first choice (-4, 5/2) has this sum.

8 0

3 years ago

Using the graph as an aid, which statement describes a true relationship between the x-intercepts and the zeros? A) The x-interc

Genrish500 [490]

Answer: A) The x-intercepts and the zeros are the same value.

Step-by-step explanation:

because when graphing the line goes through the origin and the origin is zero.

4 0

3 years ago

Questions 2-7 will all be in regards to this data set:Observation X Y1 20 302 23 353 28 404 26 385 24 376 32 457 35 508 24 349 3

Tomtit [17]

Answer:

r =0.4437

Step-by-step explanation:

We have the follwoing dataset:

X: 20,23,53,4,24,32,35,24,31,23

Y: 30,35,40,38,37,45,50,34,42,32

n=10

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.

And in order to calculate the correlation coefficient we can use this formula:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

For our case we have this:

n=10 $\sum x = 269, \sum y = 383, \sum xy = 10609, \sum x^2 =8645, \sum y^2 =15007$

Th excel figure attached shows the calculations for each sum.

$r=\frac{10(10609)-(269)(383)}{\sqrt{[10(8645) -(269)^2][10(15007) -(383)^2]}}=0.4437$

So then the correlation coefficient would be r =0.4437

3 0

3 years ago