MATHEMATICS MIDDLE SCHOOL

60 paintings. T= Painting from 20th century. B= British painting. A painting is chosen random.it is from the 20 century. Work out the probability it is British

Answers

Answer 1

Answer:

The probability will be "0.20".

According to the question,

The sum of all the areas = 60

then,

$x(x-2)+x+(2x+8)+10=60$
$x=6$

Therefore,

→ $P (British | It's \ from \ the \ 20^(th) \ century) = (n(B \ and \ T))/(n(T))$

$= (x)/(x+x(x-2))$

$= (6)/(6+6(6-2))$

$= (1)/(5)$

$= 0.20$

Thus the answer above is right.

Learn more:

brainly.com/question/6133405

Answer 2

Answer:

Final answer:

This question is about computing the conditional probability that a painting selected at random is British, given it's from the 20th century. Without specific numbers, the tentative solution is the ratio of the number of British 20th-century paintings to the total number of 20th-century paintings.

Explanation:

The subject here is Probability, a topic within Mathematics. Let us assume without losses in generality that 'T' represents a painting from the 20th century and 'B' represents a British painting. Given 60 paintings, we're selecting one at random. The condition is it's a 20th-century painting ('T') and we need to find the probability that it's also a British painting ('B'). The data given in the question isn't clear enough to give a numerical answer. However, we can give a general solution.

Firstly, we find the number of paintings which are both from 20th century and British. Let's say this number is n. The number of 20th-century paintings would be more than or equal to n. Let's call this N. Therefore, the required probability would be n/N.

Learn more about Conditional Probability here:

brainly.com/question/32171649

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What is the median in math

Answers

In math, the median in a group of values is the value that is closest to the center of the group when the values are organized from least to greatest.

For example, in the group [50, 51, 53, 56, 67], 53 would be the median, because it is in the middle of the group.
Hope that helped =)

Line your data, or numbers, from least to great. The median is the middle number. If there are two middle numbers, you need to find the average of those two numbers by finding their sum and dividing by 2. I hope this helps!

Pedro is building a spice rack with 4 shelves that are each 0.55 meter long. At the hardware store, Pedro finds he can only buy the shelving in whole meter lengths. Exactly how many meters of shelving does Pedro need? Since he can only buy whole number lengths, how many meters of shelving should he buy?

Answers

you multiply the numbers
4X0.55= 2.2

but since you need that 0.2 to complete the self you round up to 3

Pedro should buy $\boxed{\bf 3\text{\bf\ meters}}$ of the shelving.

Further explanation:

Procedure used:

The following steps are involved to find the value of $y\text{ unit}$ where $y$ is any real number.

1) If one unit is $x$ then multiply $y$ with $x$ .

2) The resultant number is $xy$ .

Given:

Pedro is building a spice rack with $4\text{ shelves}$ and length of each rack is $0.55\text{ meters}$ . He can only buy whole number of lengths.

Calculation:

Step 1:

The length of the shelf is $0.55\text{ meter}$ .

Multiply $4$ by $0.55$ to calculate the length of $4$ shelves.

$\begin{aligned}l&=\4* 0.55\n&=2.20\end{aligned}$

Here, $l$ represents the length of the $4$ shelves.

Step 2:

Pedro can only buy whole number lengths.

In the $\text{step }1$ we can see the length of the shelf is not appropriate as he can by only whole numbers.

Pedro needs exactly $2.2\text{ meters}$ of shelving.

Therefore, the number $2.20$ lies between $2$ and $3$ .

The number $2$ is not correct as the length should be at least $2.20\text{ meters}$ .

Therefore, Pedro should buy $3\text{ meters}$ of the shelving.

Thus, the required length of the shelf is $\boxed{\bf 3\text{\bf\ meters}}$ .

Learn more:

1. Learn more about the representation of the graph brainly.com/question/2491745

2. Learn more about the graph of the quadratic function brainly.com/question/2334270

3. Learn more about graphed below of the function brainly.com/question/9590016

Answer details:

Grade: Junior school

Subject: Mathematics

Chapter: Units and measurement

Keywords: Pedro, spice rack, meters, building rack, shelf, lengths, measurement, unit, decimal, fractions, numbers, numbering system, rational number, whole numbers.

I need the answers for these questions

Answers

1. 17/5
2. 25/4
3. 25/12
4. 27/10
5. 2 2/5
6. 8
7. 10 2/3
8. 1 8/12 or 1 2/3

1. 17/5
2. 25/4
3. 25/12
4. 27/10
5. 2 2/5
6. 8
7. 10 2/3
8. 1 8/12

Melissa will rent a car for the weekend. She can choose one of two plans. The first plan has an initial fee of $61.96 and costs an additional $0.10 per mile driven. The second plan has an initial fee of $51.96 and costs an additional $0.14 per mile driven. How many miles would Melissa need to drive for the two plans to cost the same?