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Neporo4naja [7]
4 years ago
13

A positive number "a" or the same number "a" increased by 50% and then decreased by 50% of the result? how bigger is the number?

Mathematics
1 answer:
Talja [164]4 years ago
5 0

Answer:

The\:number\:is\:smaller\:by\:25\%

Step-by-step explanation:

a+50\% a =a+0.5a=1.5a\\1.5a-50\% 1.5a=1.5a-0.75a=0.75a=75\% a

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Assume there is probability of 0.36 that a U.S. soldier who served in the last decade has served in Iraq. If a soldier served in
taurus [48]

Answer:

0.440559

Step-by-step explanation:

To find the probability of having a soldier from Iraq that had lung problems, we multiply the 2 probabilities, so 0.36*0.14 = 0.0504

The probability of a soldier serving not in Iraq and having lung problems is 0.64 (serving in Iraq is 0.36, so not serving in Iraq is 1 - 0.36 = 0.64) times 0.1 = 0.064.

If we sum up these two probabilities, we have the probability of a soldier having lung problems (0.0504+0.064 = 0.1144).

Now, to know the probability of a soldier with a lung problem having served on Iraq, we divide the probability of serving in Iraq and having lung problems (0.0504) by the probability of having lung problem (0.1144):

0.0504/0.1144 = 0.440559

6 0
4 years ago
A typical lap around a track in the United States has length of 440 yards. How many lap would need to be complete to run a mile?
g100num [7]

4 laps because a mile is 1,760 yards and the 440 laps need to be divided into 1,760 so 1,760/440 is 4 so four laps are needed to complete a mile

3 0
3 years ago
Find the value of two numbers if their sum is 19 and and their difference is 5
sergij07 [2.7K]

Answer:

7 and 12

Step-by-step explanation:

x - y = 5

y = (5+x)

x+ (5+x) = 19

2x +5 = 19

2x = 14

x = 7

           19-7 = 12

12 +7  = 19

12-7 = 5

7 0
3 years ago
Read 2 more answers
The price of a certain stock fell $2 each day for 4 consecutive days. Write an expression that you could use to find the change
Paha777 [63]

Answer:

35

Step-by-step explanation:

d=-2\\n=4\\a_4=a_1+3d\\if\; a_1=41\; then\; a_4=41+3\times(-2)=41-6=35

6 0
3 years ago
What is the slope of the line that passes through (3, −7) and (−1, 1)? (1 point)
ELEN [110]

Answer:

The slope of the line is -2

Step-by-step explanation:

<em>The rule of the slope of a line is</em>:

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}  , where

(x_{1},y_{1}) and (x_{2},y_{2}) are two points on the line

<em>Let us find the slope using the rule above</em>

∵ The line passes through points (3, -7) and (-1 , 1)

∴ x_{1} = 3 and  x_{2} = -1

∴ y_{1} = -7 and  y_{2} = 1

<em>Substitute these values in the rule above to find m</em>

∴ m=\frac{1--7}{-1-3}=\frac{1+7}{-4}=\frac{8}{-4}=-2

∴ The slope of the line that passes through the given points is -2

8 0
4 years ago
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