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Trava [24]
3 years ago
8

I need help with this problem

Mathematics
1 answer:
dalvyx [7]3 years ago
5 0

Answer:

it would be a big + and 1 -

Step-by-step explanation:

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What are m∠1 and m∠2?
zaharov [31]

Answer:

B. <1 = 35, m<2 = 30

Step-by-step explanation:

To figure out m<1 I first need to figure out the other missing angle. A straight line is a 180 degree angle. Taking that information you can do 180 - 115. This means that the missing angle is 65 degrees. The interior angles of triangles always add up to 180.

80 + 65 = 145

180 - 145 = 35

<1 = 35

Repeat with the other side.

85 + 65 = 150

180 - 150 = 30

<2 = 30

Hope this helps!

5 0
2 years ago
Can u please answer this question now I will mark ur answer and get u 20 pts (click me)
Wewaii [24]
8090kg-4854kg=decrease in kg ----- find the difference
3236=decrease in kg 
3236kg/8090kg=percent decrease ----- decrease/original amount
0.4= percent decrease ------ percent decrease in decimal form
0.4*100=percent decrease ------ multiply by 100 to get percent form
40% decrease

7 0
3 years ago
A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of t
Makovka662 [10]

Answer:

132.233 ft2

Step-by-step explanation:

Let's call the width of the rectangle 'w' and the length 'x'. So the area of the semicircle is:

A_1 = \pi*radius^2/2

A_1 = \pi*(w/2)^2/2

A_1 = \pi/8*w^2

And the area of the rectangle is:

A_2 = w*x

If the perimeter of the window is 41 feet, we have:

Perimeter = length + 2*width + \pi*radius

41 = x + 2*w + \pi*w/2

x = 41 - w(2 + \pi/2)

Now, the equation for the total area of the window is:

A = A_1 + A_2 = \pi/8*w^2 + w*x

A = \pi/8*w^2 + w*(41 - w(2 + \pi/2))

A = (\pi/8-2 - \pi/2)*w^2 + 41w = -3.1781w^2 + 41w

To find the maximum area, we can find the x-coordinate of the vertex of the quadratic equation:

x\_vertex = -b / 2a = -41 / (-3.1781*2) = 6.45

So the width that gives us the maximum area of the window is 6.45 feet, and the area will be:

A = -3.1781w^2 + 41w = -3.1781*(6.45)^2 + 41*6.45 = 132.233\ ft^2

3 0
3 years ago
Evaluate the expression when x = 12 and y = 2.x3y
harina [27]

12 \times 3 \times 2 = 72
12×3= 36
36×2=72
5 0
3 years ago
Read 2 more answers
Tim is clearing brush from a large piece of land. Tim clears 1/4 of an acre in 2 days. How
kodGreya [7K]

Answer:

8 days

Step-by-step explanation:

\frac{1}{4}  \times 4 =1

2 \times 4 = 8

It takes Time 8 days to clear 1 acre

4 0
3 years ago
Read 2 more answers
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