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3 years ago

What is the probability that a randomly selected person supports the new station??

Mathematics

2 answers:

vichka [17]3 years ago

7 0

Answer:

.52

Step-by-step explanation:

Add both male and female supports to get 52

then add all the numbers to get a total of 100

52/100=.52

mezya [45]3 years ago

4 0

Answer:

.52

Step-by-step explanation:

We can write an equation

supports/all

we can see that 27 males and 25 females support which means that

27+25= 52 total people support

now we just need to find the number of people surveyed

we do this by summing everything

27+25+18+13+5+12=100

52/100 = .52

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A radioactive substance has a continuous decay rate of 0.056 per minute. How many grams of a 120 gram sample will remain radioac

sammy [17]

Answer:

The mass of the radioactive sample after 40 minutes is 12.8 g.

Step-by-step explanation:

The mass of the sample can be found by using the exponential decay equation:

$N_{t} = N_{0}e^{-\lambda t}$

Where:

N(t): is the amount of the sample at time t =?

N₀: is the initial quantity of the sample = 120 g

t = 40 min

λ: is the decay constant = 0.056 min⁻¹

Hence, the mass of the sample after 40 min is:

$N_{t} = N_{0}e^{-\lambda t} = 120g*e^{-0.056min^{-1}*40 min} = 12.8 g$

Therefore, the mass of the radioactive sample after 40 minutes is 12.8 g.

I hope it helps you!

5 0

3 years ago

What is the slope of the line that passes through the points (-5,9) and (5,11)?

Minchanka [31]

The slope is 1/5

I hope this helps!!!!

4 0

3 years ago

To find the product of two digit number and a 1 digit number you can multiply the tens multiply the ones and find of each

kumpel [21]

Yes you can multiply 10 to find the numbers

4 0

3 years ago

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.

Sophie [7]

since the equation is c=9.5t, Sanjay paid c=9.5 x 14 shirts he bought. which =$133

6 0

3 years ago

Write as an algebraic expression: 1) a% of 80 2) 17% of b 3) a% of b

Anna35 [415]

1) 4a/5
a% of 80 = a% (80) = (a/100)(80) = 80a/100 = 4a/5

2) 17b/100 or 0.17b
17% of b = (17/100)(b) = 17b/100 [ = 0.17b ]

3) ab/100
a% of b = (a/100)(b) = ab/100

5 0

3 years ago