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dolphi86 [110]
3 years ago
8

Lol could someone explain to me the answer and how they got the answer I'm very confused about it

Mathematics
1 answer:
Bingel [31]3 years ago
6 0

I'm assuming the deck is the shaded area.

To find the area of the deck, find the area of the large circle and subtract the area of the small circle from it:

A of large circle: R = (4.2/2) + 1.7 = 3.8; area: 3.8^2 * pi is about 45.3.

A of small circle: r = 4.2/2 = 2.1; area: 2.1^2 * pi is about 13.8

Now, subtract:

45.3 - 13.8 = 31.5 meters squared

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Help plz my teacher won't help
lesantik [10]

Answer:

y = -3x + 9

Step-by-step explanation:

y = mx + b where m is the slope and b is the y intercept

The hypotenuse is on the same line as BC but twice as long.  So extend that line up and it will cross the y axis at (0,9).  9 will be your y intercept.

To find the slope start at C and count  up 9 and to the left 3 to get to B.

So the slope is rise/run or 9/(-3) = -3.

Final equation would be y = -3x + 9

6 0
3 years ago
Need help ASAP please
Orlov [11]

Answer:

D

Step-by-step explanation:

3 0
3 years ago
Use Inverse Operations to solve.Check Your Answer<br><br> 17 + k = 54
lesya [120]
When you do the inverse operation which in this case would be subtraction you do  54-17 and then you do 17 minus 17 which leaves you with the variable 54-17=34 so k=34

8 0
3 years ago
Read 2 more answers
Suppose you are given a parabola with two points that have the same y-value, such as (-7, 11) and (3, 11). Explain how to find t
Hoochie [10]

By using the midpoint formula and the equation of the line, the equation of the line of symmetry is x = - 2.

<h3>How to derive the equation of the axis of symmetry </h3>

In this question we know the locations of two points with the same y-value, which means that the axis of symmetry is parallel to the y-axis and that both points are equidistant. Thus, the axis of symmetry passes through the midpoint of the line segment whose ends are those points.

First, calculate the coordinates of the midpoint by the midpoint formula:

M(x, y) = 0.5 · (- 7, 11) + 0.5 · (3, 11)

M(x, y) = (- 2, 11)

Second, look for the first coordinate of the midpoint and derive the equation of the line associated with the axis of symmetry:

x = - 2

By using the midpoint formula and the equation of the line, the equation of the line of symmetry is x = - 2.

To learn more on axes of symmetry: brainly.com/question/11957987

#SPJ1

3 0
2 years ago
Max spent 11 dollars on items. He bought milk, eggs and fabric softener. The eggs cost one fifth of what the milk cost and the f
LiRa [457]
M + e + f = 11
e = 1/5m
f = 3m

m + 1/5m + 3m = 11 <== ur equation
5/5m + 1/5m + 15/5m = 11
21/5m = 11
m = 11 / (21/5)
m = 11 * 5/21
m = 55/21
m = 2.619 rounds to 2.62...milk

e = 1/5m
e = 1/5(2.62)
e = 0.53 .....eggs

f = 3m
f = 3(2.62)
f = 7.86...fabric softener
4 0
3 years ago
Read 2 more answers
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