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12345 [234]
3 years ago
11

Need help with both so yeah

Mathematics
1 answer:
daser333 [38]3 years ago
8 0

Answer:

I'd guess H, for question 2,

and for the top question, the answers are messy looking...


Step-by-step explanation:


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Pleasee helppp fastt
Phoenix [80]
Not sure if this is how your teacher wants it, but here is how I would approach it in high school geometry:

To find the area of a rectangle, you need the base and the height.

The radius is 28 mm however the radius only covers half of one circle. Multiply 28 by 2 to get the length of one circle (56) and multiply 56 by 2 to get the length of your base of your rectangle (112).

Now to find the height: the center of the circles creates an equilateral triangle with the side length of 2r or 56 in this case. This means each angle of that triangle is 60 degrees, and when split in half, this creates two triangles both with angles of 30, 60, and 90. The altitude of this triangle is r√3 because of the “special right triangle rule” or 28√3 in this case. This comes to 48.497 mm. To find the remaining length of the height, you can use the radii of the top and bottom circle which add to 56. Add this to the previous number. So...

Height: 104.497
Base: 112

Now multiply the base times height to get:

216.497 mm.

Hope that helps!
6 0
3 years ago
How do you solve 3x-6y=21 and -5x-y=42
klasskru [66]

Answer:

1.) -7/2

2. -42/5

hope this helps, I just did the math.

8 0
3 years ago
Given that h(x)=x³-2, evaluate h(4)<br><br> pls help me!
ahrayia [7]

Hello and Good Morning/Afternoon:

<u>Let's take this problem step-by-step</u>:

<u>The problem want's to find h(4)</u>

  \hookrightarrow \text{4 in this case is the x's value}\\

       \hookrightarrow\text{This means that we must plug in x into x's position in h(x)'s equation}

                  h(4) = (4)^3-2=64-2=62

<u>Answer: h(4) = 62</u>

<u></u>

Hope that helps!

#LearnwithBrainly

6 0
2 years ago
Use the distributive property to simplify 4^x(2^-6)
julsineya [31]
Is it 4 times x or 4 to the power of x, if the first one then, 8x-24x. if the second then 8^-6x
6 0
4 years ago
Which statement best describes ultraviolet waves? They are
irinina [24]
The answer is higher energy than visible light
6 0
3 years ago
Read 2 more answers
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