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salantis [7]
3 years ago
6

The distance traveled by a car moving at 30 miles per hour for t hours

Mathematics
1 answer:
Inga [223]3 years ago
8 0
D = t*s
distance = time * speed
d = t*30
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What is the probability that Zeke gets a sum of 7
Pepsi [2]

Answer:  

≈

17

%

Explanation:

A sum of 7 can be achieved the following ways.

5 and 2

2 and 5

4 and 3

3 and 4

6 and 1

1 and 6

There are

6/2

=

3/6

possible outcomes and 6 ways to obtain the sum of 7 so

6 3/6

≈

17

%

6 0
3 years ago
Suppose that 1 month before the election a random sample of 500 registered voters are surveyed. From this sample 270 indicate th
Aleonysh [2.5K]

Answer:

[ 0.4964, 0.5836 ]

Step-by-step explanation:

Data provided in the question:

Total sample size = 500

person voting for smith = 270

thus,

P( person voting for smith ), p = \frac{270}{500} = 0.54

Confidence level = 95%

now,

standard error, SE = \sqrt{\frac{p(1-p)}{n}

or

SE = \sqrt{\frac{0.54(1-0.54)}{500}

or

SE = 0.0223

now,

Confidence interval = p ± ( z × SE )

here,

z value for 95% confidence interval is 1.96

Confidence interval = [ 0.54 - ( 1.96 × 0.0223 ), 0.54 + ( 1.96 × 0.0223 ) ]

= [ 0.54 - 0.0436 , 0.54 + 0.0436 ]

= [ 0.4964, 0.5836 ]

8 0
3 years ago
Use the number line to add the fraction.
horrorfan [7]

Answer:

1/8

Step-by-step explanation:

-5/8 + 3/4 = -5/8 + 6/8 = 1/8

3 0
3 years ago
Read 2 more answers
A scientist wants to find the average mass of fish living in a large pond. So she will use the masses of a sample of fish from t
Oxana [17]
The scientist would use milligrams, grams, and kilograms.

The best procedure would be to randomly pick 52 fish from the entire pond and weigh each of them as this would be the most unbiased way to achieve the average mass
6 0
3 years ago
-2 + (–15) = –(2 + 15) what property is this equation
barxatty [35]

Hello.

The answer is: The Commutative property

The Commutative property states that order does not matter. Multiplication and addition are commutative. Commutative is also when you change the order of the equation but its still that same answer.

Have a nice day.




4 0
3 years ago
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