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soldier1979 [14.2K]
4 years ago
9

A circle has radius 50 cm. Which of these is closest to its area?

Mathematics
1 answer:
trapecia [35]4 years ago
6 0

Answer:

C) 7854 cm²

Step-by-step explanation:

The formula for the area of a circle is A = πr²

Now just plug in the numbers

A = π (50²)

A = 2500π

Let's say pi is 3.14

A = 2500(3.14)

A ≈ 7850

The closest answer to this answer is C: 7854

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If f(x) is a function and f(1) = 5, then which of the following could not be true?
Mashcka [7]

Answer:

f(1) = 1

Step-by-step explanation:

A function can have only one value of y for a given value of x.

Thus, if f(1) = 5, we cannot have f(1) = 1.

We can have f(2) =1 and f(5) = 5, because these are values of y for different values of x,

The first diagram below is the graph of a function, because there is only value of y that corresponds to a given value of x.

The second diagram is not the graph of a function, because there are two values of y that correspond to a given value of x.

However, the top semicircle and the bottom semicircle separately are graphs of functions, because they each have only value of y that corresponds to a given value of x.

5 0
3 years ago
Solve 6x+9-16x=-21 Could you show your work please? That would be greatly appreciated.
PIT_PIT [208]
Combine like terms

6x + 9 - 16x
6x - 16x = -10x

-10x + 9 = -21
        -9       -9

-10x = -30
-10x/-10 = -30/-10
x = 3

Answer: x = 3
8 0
3 years ago
Read 2 more answers
The drama club raised $900 to spend on clothing for club members. They can buy t-shirts for $12 each and sweatshirts for $30 eac
DaniilM [7]

The given question is incomplete and has the following options

1) 35 t-shirts and 15 sweatshirts

2) 32 t-shirts and 18 sweatshirts

3) 25 t-shirts and 20 sweatshirts

4) 22 t-shirts and 22 sweatshirts

5) 15 t-shirts and 25 sweatshirts

Answer:

total money to be spent on clothing = $900

the only possible combination for this will be

 25 t shirts and 20 sweatshirts

because  25*12 + 20 * 30 = 900

8 0
3 years ago
4.
Rufina [12.5K]

Answer:  Graph D (bottom right corner)

======================================================

Explanation:

The equation y = 3x+3 is in slope intercept form y = mx+b

m = 3 = slope

b = 3 = y intercept

In this case, both the slope and y intercept are the same (though in general they tend not to be).

The positive slope value means the line goes uphill as you move from left to right. The positive y intercept means the diagonal line crosses the y axis somewhere above the horizontal x axis. Specifically, it crosses the y axis at y = 3

Graph D is the only graph that has such a line on it. Graphs A, B and C have the positive slope line where they have a negative y intercept, so we can rule them out.

You can use graphing tools such as Desmos or Geogebra to help confirm this answer. You could also make a table of values, and plot each point, to form the lines. Two points is the minimum amount needed to form any line.

4 0
3 years ago
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What is the value of this expression?<br> (-2) to the 5th power
Daniel [21]
-32 because all you do is multiply -2 5 times.
4 0
4 years ago
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