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RUDIKE [14]
3 years ago
11

I'm confused on how to get started on each one (A,B, & C)

Mathematics
1 answer:
leonid [27]3 years ago
5 0
You might want to double check... bit rusty here.

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Uca is designing a propeller system that consists of 3 blades, each of which is
zmey [24]

Answer:

The weight of the three blades together is 134\ g

Step-by-step explanation:

step 1

Find the area of the circle

The area of the circle is equal to

A=\pi r^{2}

we have

r=4\ in

assume

\pi=3.14

substitute

A=(3.14)(4)^{2}

A=50.24\ in^{2}

step 2

Find the area of the 3 blades

we know that

The area of the 3 blades represent a central angle of 60 degrees, so

its a 1/6 of the area of complete circle

A=50.24/6=8.37\ in^{2}

step 3

Find the weight of the three blades together to the nearest gram

(8.37\ in^{2})*(16\ g/in^{2})=134\ g

4 0
3 years ago
Which algebraic expression is equivalent to the expression below
djyliett [7]
21x + 84 + 12x - 16
33x + 68

The correct answer is 1.) 33x + 68.
Hope this helps!
4 0
3 years ago
Read 2 more answers
Solve this system by substitution (3 variables) brainliest answer goes to first answer and 8 points!
Natalka [10]

Answer:Solve this system by substitution (3 variables) brainliest answer goes to first answer and 8 points!

-x -y -z = -8

-4x +4y +5z = 7

2x+2z=4

Show steps please!

Step-by-step explanation: a-z=3-2=657u568959jb5j656856 thats the answer your welcome

4 0
3 years ago
Are there any numbers that go into 78 and 780
Kryger [21]
Are there any numbers that go into 78 and 780?

78 ÷ 2 = 39
780 ÷ 2 = 390

2 can be a number that goes in 78 and 780.
7 0
3 years ago
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Landscape company sold 25 trees on Friday. There were a total of 125 trees in inventory. What percent of the trees were sold on
Arte-miy333 [17]

Answer: 20%

Step-by-step explanation:

First determine how many times 25 fits in 125. It’s 5 right. Now turn that into a percent. That leading to 20%

5 0
3 years ago
Read 2 more answers
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