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3 years ago

Find each difference. HELP ASAP

Mathematics

1 answer:

maxonik [38]3 years ago

4 0

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1 mile is equivalent to 1.6 km how many kilometres is equal to 23 miles

irga5000 [103]

Answer:

Step-by-step explanation:

1 mile = 1.6 km

23 miles = 1.6 * 23

= 36.8 km

4 0

3 years ago

At a restaurant, for a sandwich Donald can choose between a roast beef sandwich, a chicken salad sandwich, and a fish sandwich.

Iteru [2.4K]

I think it’s 18 possible meals

6 0

3 years ago

ten friends scored the following marks in their end of year maths exam: 23 37 45 49 63 63 70 72 82. What was the mean deviation

ANTONII [103]

Answer:

50.4

Step-by-step explanation:

mean is just another way for syaing average

all the numbers added = 504

dived it by the number of scores

504 divided by 10 = 50.4

8 0

3 years ago

The top of an 18-foot ladder touches the side of a building 14 feet above the ground. Approximately how far from the base of the

charle [14.2K]

Answer:

Assuming that ladders should be placed at an 75° angle, let's translate it into a slope of 3.732 of a line (looked the value up, was too lazy to calculate it)

the distance from the orign in the picture is your answer, and one side of a triangle formed by the wall, the ground and the ladder

5 0

3 years ago

A magazine provided results from a poll of 2000 adults who were asked to identify their favorite pie. Among the 2000 respondent

nadya68 [22]

Answer:

$\r p = 0.11$

$\r q = 0.89$

n = 2000

$E = \pm 5$

p - population proportion

$\alpha = 5$ %

Step-by-step explanation:

From the question we are told that

The sample size is $n = 2000$

The proportion of the population for chocolate pie is $p_c = 0.11$

The margin of error is $E = \pm 5$ %

Now in the question we are asked to provide the meaning of

$\r p , \r q , n , E , and\ p$

Now $\r p$ is the sample proportion of the population that those chocolate pie as favorite pie of which is given from the question as 0.11

Now

$\r q$ is the sample proportion of the population that choose other pies apart from chocolate pie as their favorite and it is evaluated as

$\r q = 1 - \r p$

$\r q = 1 - 0.11$

$\r q = 0.89$

n is the sample size which is given as n = 2000

E is the margin of error which given as $E = \pm 5$ %

p is the population proportion

Given that the confidence level is 95 % then the level of significance is mathematically evaluated as

$\alpha =(100 - 95)$ %

$\alpha =$ 5%

4 0

4 years ago