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2 years ago

−3

Mathematics

1 answer:

Svetllana [295]2 years ago

5 0

Answer:

10 is the rounded number

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If the length of a side of an equilateral triangle is x, what is half of the perimeter?

nataly862011 [7]

Answer:

3/2 x

Step-by-step explanation:

length of a side of an equilateral triangle is x

The perimeter is

P = 3s where s is the side length

P = 3x

1/2 of the perimeter

1/2 (3x)

3/2 x

4 0

3 years ago

What is 4.6m2 in cm2 ?

notsponge [240]

Answer:

4.6

Step-by-step explanation:

5 0

2 years ago

Which statement correctly compares the mean number of students for the data in the plots?

satela [25.4K]

Answer:

"There are about 2 more students in each class at Oak Middle School than at Poplar Middle School."

Step-by-step explanation:

We need to compute the mean for each.

Poplar Middle School:

Lets list the numbers

20,20,20,21,21,21,21,21,22,22,22,22,22,22,22,23,23,23,23,24

The average is sum of all divided by number of numbers, that will be:

435/20 = 21.75

Oak Middle School:

The numbers are:

20,21,21,22,22,23,23,23,23,24,24,24,25,25,26,26,27,27,28,29

The average is sum divided by number of numbers, that will be:

483/20 = 24.15

The difference in mean is:

24.15 - 21.75 = 2.4

We can say, that is about 2 more students in Oak Middle School, correct answer choice is "2nd answer choice" - "There are about 2 more students in each class at Oak Middle School than at Poplar Middle School."

7 0

3 years ago

In a city, 60% of the residents live in houses and 40% of the residents live in apartments. Of the people who live in houses, 20

Step2247 [10]

75%; so if we say there are 100 people in this city that means 60 of them live in houses and 40 of them live in apartments. Of the 60 living in houses 20% of them (12% of total population; 60 x .20) own their own business and those in apartments (40) 10% of them (4% of total pop.; 40 x .10) have their own business. In total 16 of the 100 people have businesses and 12 of those people live in houses so 12/16 equals .75. We multiply this by 100 to get the percent so there’s 75% that a person who owns a business in this city will also live in a house.

6 0

2 years ago

Help please? ASAP :)

Juliette [100K]

Answer: The Z-value is a test statistic for Z-tests that measures the difference between an observed statistic and its hypothesized population parameter in units of the standard deviation. ... A mold with a depth of 12 cm has a Z-value of 2, because its depth is two standard deviations greater than the mean

Step-by-step explanation:

7 0

3 years ago