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bearhunter [10]
2 years ago
7

Find the area of the circle to the nearest whole number, if necessary.

Mathematics
1 answer:
creativ13 [48]2 years ago
8 0

Answer:

Area of a Circle = πr²

R=Diameter/2

=21mm

=π(21)²

=1385.44mm²

To the nearest whole number

= 1385mm²

The answer is in mm². It may differ if the given answer is in m². You can get this by converting your radius to meters. This is done by dividing 21mm by 1000.

Bye!!!

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HELP PLEASE 20 points
Stells [14]

Answer:

Y=2/3x+17/3

Step-by-step explanation:

3 0
3 years ago
Which of the following inequalities matches the graph? graph of an inequality with a dashed line through the points (0, 7) and (
stiks02 [169]

Answer:

2x + y < 7

Step-by-step explanation:

First we find the slope of the line that passes through the given points.  The formula for slope is:

m=\frac{y_2-y_1}{x_2-x_1}

Using our points, we have

m=\frac{7-5}{0-1}=\frac{2}{-1}=-2

The y-intercept will be the point where the data crosses the y-axis.  All y-intercepts have an x-coordinate of 0; since we already have the point (0, 7), we have the y-intercept at 7.  This makes our equation

y = -2x + 7

The inequalities we're given are written in standard form, Ax+By=C.  This means we need x and y on the same side of the equals in our equation.

Since the inequality is graphed below the line, we want our inequality to be

y < -2x+7

To move the x-value to the other side of the equation, we will add 2x to each side:

y+2x < -2x+7+2x

y+2x < 7

2x+y < 7

7 0
2 years ago
Read 2 more answers
An architect designs a diagonal path across a rectangular patio. The path is 29 meters long. The width of the patio is x meters,
photoshop1234 [79]
The answer for this question is D 
7 0
3 years ago
Read 2 more answers
Oh my goodness please help its confusing.
Irina18 [472]

Probably the easiest way to do these is to convert them to slope intercept form by solving for y.  When we have y=mx+b, we read off the slope m.

-5x + 2y = 10

Add 5x to both sides,

2y = 5x + 10

Divide both sides by 2,

y = (5/2) x + (10/2)

Obviously 10/2=5 but we don't care about that for this problem.  We read off the slope as

Answer: 5/2, last choice


12 = 4x - 6y

Adding 6y and subtracting 12,

6y = 4x - 12

Dividing by 6,

y = (4/6) x - (12/6)

y = (2/3) x - 2

Answer: 2/3


3 0
2 years ago
2) Consider the quadratic sequence 72, 100, 120, 132
slava [35]

Answer:

Tn = -4n²+40n+36

Step-by-step explanation:

A general quadratic sequence, Tn = an²+bn+c, where n is the term of the sequence.

So, when n = 1, Tn = 72, which means T1 = a+b+c=72.

when n = 2, Tn = 100, which means T2= 4a+2b+c = 100

when n = 3, Tn = 132, which means T3 = 9a+3b+c = 132.

Now, use a calcaulatot to solve the 3 variable simultaneous equation. According to my calculator, a = -4, b = 40, c = 36.

Hence, you a, b, and c in the Tn equation given above.

Therefore, <em>Tn = -4n²+40n+36</em>

5 0
3 years ago
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