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Zigmanuir [339]
3 years ago
5

Jorge randomly selects a digit from 0 to 9. What is the probability that the digit he selects is a prime number?

Mathematics
1 answer:
zloy xaker [14]3 years ago
3 0

Step-by-step explanation:

{0,1,2,3,4,5,6,7,8,9}--set of numbers from 0 to 9

{2,3,5,7}---set of prime numbers from 0 tp 9

there are 10 numbers in the first set and 4 numbers in the second set.

4/9 is the probability that the digit he selects is a prime number

Hope that helps :)

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Sharon is jumping from an 18-foot diving board with an initial upward velocity of 4 ft/sWhen Sharon jumps, Megan throws a beach
likoan [24]

Answer:

1.08 seconds

Step-by-step explanation:

given data

<u>first equation:</u>

According to the data, sharon position will be

h(t)= -16 t^{2} + 4t +18---->eq(1)  

<u>Second equation;</u>

When Sharon jumps, Megan throws a beach ball up to Sharon with an initial upward velocity of 16 ft/s from a height 5 feet off the ground to the nearest hundredth of a second

therefore, ball position would be

h(t)= -16t^{2} +16t +5 --->eq(2)

In order to find how long after she jumps does the ball reach Sharon i.e time, we will equate eq(1) and eq(2)

Therefore,

eq(1)= eq(2)

-16t^{2} +4t +18 = -16t^{2} + 16t +5  --->(further simplifying it)

-16t^{2} + 16t^{2} + 18 -5 = 16t - 4t

13 = 12t

t= 13/12

t= 1.08 s

Thus it took 1.08 seconds.

7 0
3 years ago
What is the simplified form of 1 over x minus 2 over x squared minus x ? (1 point)
Varvara68 [4.7K]

Answer:

3y times the quantity 2x minus 1 over x times the quantity x minus 2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Two​ researchers, Jaime and​ Mariya, are each constructing confidence intervals for the proportion of a population who is​ left-
Irina-Kira [14]

Answer:

Jaime's wrong, becuase the distance(absolute value) from the point estimate to the lower bound is different than he distance from the upper bound to the point estimate.

Step-by-step explanation:

The distance(absolute value) from the point estimate to the lower bound must be the same as the distance from the upper bound to the point estimate.

The point estimate is 0.14.

Jaime

Jaime's interval has a lower bound of 0.049 and an upper bound of 0.191

upper - point = 0.191 - 0.14 = 0.051

point - lower = 0.14 - 0.049 = 0.091

Jaime's wrong, becuase the distance(absolute value) from the point estimate to the lower bound is different than he distance from the upper bound to the point estimate.

Mariya

Just to check.

Mariya's interval has a lower bound of 0.079 and an upper bound of 0.201.

upper - point = 0.201 - 0.14 = 0.061

point - lower = 0.14 - 0.079 = 0.061

Mariya has the same distances, so it is correct.

6 0
3 years ago
Can someone help me with this
Thepotemich [5.8K]

Answer:

D: 1/35

Step-by-step explanation:

First, you have to know how many marbles there are, and if you count them all up there are 15 marbles in total. Next, there are 3 blue marbles, so you would put the fraction as 3/15, or simplified to 1/5. Now, if you don't replace that blue marble, you now only have 14 marbles, and there are 2 yellow, which means you have a 2/14 chance of drawing a yellow marble, simplified to 1/7. But because there are two parts of the problem you are going to multiply 1/5 by 1/7 to get 1/35, which is your answer.

7 0
3 years ago
Read 2 more answers
the rectangle shown has an area of 105 square inches. the width is x+ 16 inches and the length is x. find the dimensions of the
Brums [2.3K]

Answer:

Length = 5

Width = 21

Step-by-step explanation:

(x)(x + 16) = 105

x^2 + 16x = 105

x^2 + 16x - 105 = 0

(x - 5) x ( x + 21) = 0

x - 10 = 0

x = 5

x + 21 = 0

x = -21

Now that we have the zeroes.

We have to find the most viable one to put in.

Using -21 would not make sense, so we will use 5.

Plug it in:

x = 5

(5) (5 + 16) = 105

5 ( 21) = 105

6 0
3 years ago
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