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Anestetic [448]
3 years ago
8

Can someone please help me.......

Mathematics
1 answer:
svetoff [14.1K]3 years ago
5 0
Point -2,-1 would change to -2,0. the area of the new rectangle is 10 square units
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Some of the children at a school arrive by car.
scZoUnD [109]

Answer:

  • <u>74%</u>

Explanation:

You can build a two-way relative frequency table to represent the data:

These are the columns and rows:

               Car         No car      Total

Boys

Girl

Total

Fill the table

  • <em>30% of the children at the school are boys</em>

             Car         No car      Total

Boys                                       30%

Girl

Total

  • <em>60% of the boys at the school arrive by car</em>

That is 60% of 30% = 0.6 × 30% = 18%

             Car         No car      Total

Boys      18%                         30%

Girls

Total

By difference you can fill the cell of Boy and No car: 30% - 18% = 12%

             Car         No car      Total

Boy       18%           12%         30%

Girl

Total

Also, you know that the grand total is 100%

             Car         No car      Total

Boy       18%           12%         30%

Girl

Total                                     100%

By difference you fill the total of Girls: 100% - 30% = 70%

             Car         No car      Total

Boy       18%           12%         30%

Girl                                         70%

Total                                     100%

  • <em>80% of the girls at the school arrive by car</em>

That is 80% of  70% = 0.8 × 70% = 56%

             Car         No car      Total

Boy       18%           12%         30%

Girl       56%                         70%

Total                                     100%

Now you can finish filling in the whole table calculating the differences:

             Car         No car      Total

Boy       18%           12%         30%

Girl        56%         14%         70%

Total     74%          26%      100%

Having the table completed you can find any relevant probability.

The probability that a child chosen at random from the school arrives by car is the total of the column Car: 74%.

That is because that column represents the percent of boys and girls that that  arrive by car: 18% of the boys, 56% of the girls, and 74% of all the the children.

8 0
3 years ago
A country has 32 parks that allow camping and 43 parks that have playgrounds. Of those, 10 parks both allow camping and have pla
Olenka [21]

Answer:

25

Step-by-step explanation:

Given:

32 parks allow camping

43 parks allow playgrounds

10 parks both allow camping and playgrounds

110 total parks

First, we need to add 32, 43, and 10

32 + 43 + 10 = 85

Then, we find the difference of 110 and 85

110 - 85 = 25

Since it isn't a decimal, there is no point in rounding.

8 0
3 years ago
Can someone explain how to do this and the answer?
inysia [295]

Step-by-step explanation:

Helo

your answer refer to the attachment

7 0
3 years ago
Identify an equation that models the situation and find its solution. Kane planned to build a 53-centimeter-tall model of a buil
alex41 [277]

Answer:

The increment in the model is 106cm

Step-by-step explanation:

Given

Initial\ Height = 53cm

Final\ Height = 159cm

Required

Determine the increment

To do this, we simply subtract the initial height of the building from the final height

Increment = Final\ Height - Initial\ Height

Increment = 159cm - 53cm

Increment = 106cm

<em>Hence, the increment in the model is 106cm</em>

7 0
3 years ago
In a right triangle,the two sides adjacent to the right angle are known as the what? Or and
PIT_PIT [208]

Answer:

Opposite and hypotenuse

Step-by-step explanation:

In a right triangle,the two sides adjacent to the right angle are known as the opposite and the hypotenuse

3 0
2 years ago
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