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Lisa [10]
3 years ago
6

You flip the same coin 900 mores times (1000 total flips). If half of the 900 additional flips are heads and half are tails, wha

t is the empirical probability of getting a heads for this coin? (505 heads in 1000 flips)
Mathematics
1 answer:
aev [14]3 years ago
5 0

Answer:

CAn i have help and i will help you

Step-by-step explanation:

What does negative 2 over 3 > −1 indicate about the positions of negative 2 over 3 and −1 on the number line?

negative 2 over 3 is located to the right of −1

negative 2 over 3 is located on the left of −1

negative 2 over 3 is located on the right of 0, and −1 is located on the left of 0

negative 2 over 3 is located on the left of 0, and −1 is located on the right of 0

Question 2(Multiple Choice Worth 4 points)

(03.05)

Which set of rational numbers is arranged from least to greatest?

1 over 5, −1.4, negative 1 over 2, 3

3, negative 1 over 2, −1.4, 1 over 5

3, 1 over 5, −1.4, negative 1 over 2

−1.4, negative 1 over 2, 1 over 5, 3

Question 3(Multiple Choice Worth 4 points)

(03.05)

Based on the graph, which inequality is correct for a number that is to the right of -4?

A number line is shown from negative 8 to 8 at increments of 1. A circle is shown at negative 4. The entire portion of the number line to the right of negative 4 is shaded.

2 < −4

−4 > −3

1 < −4

2 > −4

Question 4(Multiple Choice Worth 4 points)

(03.05)

A girl's feet are negative 2 over 4 yards from the surface of a pool. A boy's feet are negative 3 over 4 yards from the surface of the pool. Determine whose feet are closer to the surface.

The girl's feet are closer to the surface of the pool because negative 2 over 4 > negative 3 over 4.

The boy's feet are closer to the surface of the pool because negative 2 over 4 > negative 3 over 4.

The girl's feet are closer to the surface of the pool because negative 2 over 4 < negative 3 over 4.

The boy's feet are closer to the surface of the pool because negative 2 over 4 < negative 3 over 4.

Question 5(Multiple Choice Worth 4 points)

(03.05)

Which inequality best represents that ice cream at −2°C is cooler than ice cream at 4°C?

−2°C < 4°C

−2°C > 4°C

−4°C > 2°C

−4°C < −2°C

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13) -4= -b -1/3b and -23/3= 1/2a + 5/3a
Sergeeva-Olga [200]

-4=-1b-(1/3)b

-4=-(4/3)b

-4/-(4/3)=b

b=3

-------------------------------

(1/2)3+(5/3)2

3/6+10/6=13/6

-23/3=13/6a

(-23/3)/(13/6)=a

a=-46/13

7 0
3 years ago
The equation of line a is y=3/4x-3 If line b runs parallel to line a and passes
katen-ka-za [31]

Answer:

y = -4/3 x - 1/3

Step-by-step explanation:

y = -4/3 x + b

5 = -4/3 (-4) + b

15 = 16 + 3b

b = -1/3

y = -4/3 x - 1/3

5 0
3 years ago
I don’t understand what to do on these question, some help would be nice (trigonometry)
Bumek [7]

Step-by-step explanation:

> find the angle of center circle:

cos~¹ 5/(5+12) = cos~¹ 5/17 = 72°

so the sector area of the shaded

region =

(360-72)/360 × 3.14 × 5²

= 288/360 × 78.5

= 62.8

> the height of triangle (red Line) =

4×tan 72° = 4× 3.078 = 12.31

the height of pyramid (green

Line) = √12.31²-8.5² =√74.16

= 8.61

so the volume of pyramid =

⅓×(17×8)×8.61 = 390.32

8 0
3 years ago
Two buses leave a station at the same time and travel in opposite directions. One bus travels 15 /kmh faster than the other. If
Nat2105 [25]
Since the buses travel in opposite directions, the speed at which they distance themselves is the sum of their speeds.
One bus travels at speed s.
The other bus travels at speed s + 15.
The sum of the speeds is s + s + 15 = 2s + 15

speed = distance/time

distance = speed * time

366 = (2s + 15) * 2

183 = 2s + 15

168 = 2s

s = 84

The slower bus travels at 84 km/h.

s + 15 = 84 + 15 = 99

The faster bus travels at 99 km/h.

Check:
In 2 hours, the slower bus travels 2 * 84 km = 168 km
In 2 hours, the faster bus travels 2 * 99 km = 198 km
In 2 hours, the buses are 198 km + 168 km = 366 km apart.
Our answer is correct.
6 0
3 years ago
A random sample of 250 juniors majoring in psychology or communication at a large university is selected. These students are ask
fenix001 [56]

Solution :

It is given that :

Number of students in a random sample majoring in communication or psychology at an university = 250

Total number of students majoring in psychology = 100

Number of students majoring in psychology  those who are happy = 80

So number of students majoring in psychology  those who are not happy = 20

Total number of students majoring in communication = 250 - 100 = 150

Number of students majoring in communication  those who are happy = 115

So number of students majoring in psychology  those who are not happy = 35

a). Probability of the students happy with their major choices are

    $=\frac{80+115}{250}$

    = 0.78

b). Psychology major $=\frac{80+20}{250}$

                                   = 0.4

c). Probability of the students who are happy with the communication as the choice of major = $\frac{115}{250}$ = 0.46

d). Students unhappy with their choice of major given that the student is psychology major = $\frac{20}{250}$  =  0.018

8 0
3 years ago
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