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MArishka [77]
3 years ago
15

In a newspaper, it was reported that yearly robberies in Springfield were down 30% to 91 in 2013 from 2012. How many robberies w

ere there in Springfield in 2012?
Mathematics
1 answer:
Artyom0805 [142]3 years ago
3 0

Answer:

130

Step-by-step explanation:

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If someone offers you a lottery ticket that has a 25 percent chance of winning $100, a 50 percent chance of winning $200, and a
g100num [7]

Answer: $375

Step-by-step explanation:

Given : The probability of winning $100 : P(100)= 0.25

The probability of winning $200 : P(200)= 0.50

The probability of winning $1000 : P(1000)= 0.25

Now, the the expected value of that lottery ticket is given by :-

P(100)\times 100+P(200)\times200+P(1000)\times1000\\\\=0.25\times100+0.50\times200+0.25\times1000\\\\=375

Hence, the the expected value of that lottery ticket =$375

3 0
3 years ago
Help solving this math
9966 [12]

Answer:

  1. 24 cm²
  2. 6400 -1600π ≈ 1373.45 square units

Step-by-step explanation:

1. You can look at this several ways.

It can be considered to be a stack of 1+2+3 = 6 squares that are 2 cm on a side, so have a total area of 6 × (2 cm)² = 24 cm².

You can lop off one of the squares sticking out and put it into the empty corner to form a 6 cm by 4 cm rectangle with an area of (6 cm)(4 cm) = 24 cm².

You can consider it to be a 6 cm square with 3 squares cut out of it that are 2 cm on a side: (6 cm)² -3(2 cm)² = (36 -12) cm² = 24 cm².

__

2. The shaded area is the difference in areas of a square 80 units on a side and a circle of 40 units radius. If we let d represent the side dimension of the square, then the area formulas are ...

  Square area = d²

  Circle area = π(d/2)²

So the difference area is ...

  shaded area = d² -(π/4)d² = d²(1 -π/4)

For d=80, the shaded area is ...

  shaded area = 80²(1 -π/4) = 6400 -1600π ≈ 1373.45 square units

6 0
3 years ago
PLS HELP ITS DUE TODAY!!
dezoksy [38]

Answer:

y=20x75 is the answer

Step-by-step explanation:

You can basically eliminate other two choices since they are division

8 0
3 years ago
Math question down below screen shot
inna [77]

Answer:

the screen shoy isnt showing up

Step-by-step explanation:

7 0
3 years ago
Write a short python program to simulate flipping a coin - generate a random number between 0 and 1, calling numbers < .5 tai
mr_godi [17]
Try this:
import random
tries = 0
while tries < 100:
tries += 1
coin = random.randint(1, 2)
if coin == 1:
print('Heads')
if coin == 2:
print ('Tails')
total = tries
print(total)
6 0
3 years ago
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