Please I could have some help on this question :)

1/5

Step-by-step explanation:

That little weird backwards E covers all the elements within the box in the diagram. There are x(x - 2) paintings from the 20th century, 2x + 8 British paintings, x paintings that are both British and come from the 29th century, and 10 that are neither of these. These should all add up to 60:

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

x² - 2x + 3x + 18 = 60

x² + x - 42 = 0

(x + 7)(x - 6) = 0

x = -7 or x = 6

Obviously, we can’t have a negative number of paintings, so x = 6.

Out of the paintings, we choose one that is from the 20th century, and there are:

x + x(x - 2) = 6 + 6 * (6 - 2) = 6 + 24 = 30 paintings from the 20th century

x of these are also British, so since x = 6, the probability we’re looking for is:

6/30 = 1/5

The answer is 1/5.

⅕

Step-by-step explanation:

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

x² + x - 42 = 0

x² + 7x - 6x - 42 = 0

x(x + 7) - 6(x + 7) = 0

(x - 6)(x + 7) = 0

x = 6, -7(not possible)

No. of 20th century paintings:

x(x - 2) + x

6(6 - 2) + 6

6(4) + 6

24 + 6

30

P(British/20thcentury) = 6/30 = 1/5

the range of a function is the range of y-values for which it is defined, or exists. given that we are only looking at the y-values, we can already discount the first two answers as they deal with the domain of the function (range of x-values).

now, what we need to do is find the smallest and highest y-values for which the function is defined. if you'd like, you could take a ruler and start at the very bottom of the graph, find the lowest point, then move the ruler higher and higher until you reach the highest point. doing so either in your head or with an actual ruler, we can see that the lowest y-value is -5 and the highest y-value is -1.

the question now remains as to whether they are included in the range (fourth answer) or excluded (third answer). the key here is to recognise whether they are marked with an open or a closed circle. since both (-2, -5) and (2, -1) are marked with a closed circle, they are points that exist on the graph and are thus included in the range (note that if they were marked with an open circle like (4, -2) then that would signify that there is a break in the graph at that point).

thus, the fourth answer, (y | -5 ≤ y ≤ -1), is correct.

also note that usually it is good practice to scan your eye inbetween the highest and lowest point for any breaks in the graph - we do have one here at (4, -2), however -2 is still included in the range because there is another point that is included in the graph with the same y-value, ie. point (1, -2).

i hope that but if you require any further explanation don't hesitate to comment below.

the correct answer is semicircle

step-by-step explanation:

the answer is semicircle because the shorter arc joining two points on the circumference of a circle is known as the minor arc, the larger arc is called the major arc, and a semicircle is a half circle, formed by cutting a whole circle along a diameter line.

hope i .