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sveta [45]
3 years ago
10

Annabeljustnight can you help me math?ihave a test5x-7x=8y-(-2)​

Mathematics
1 answer:
Rasek [7]3 years ago
4 0

Answer:

???

Step-by-step explanation:

we need to know what we're supposed to do

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What is the ratio of the length of the input lever arm ti the length of the output lever arm was 6 to 5. If the entire lever is
lozanna [386]
6x-\ length\ of\ first \ lever\ arm\\
5x-\ length\ of\ second] lever\ arm\\\\
6x+5x=132\\\\
11x=132\ \ \ | divide\ by\ 11\\\\
x=12\\\\ 5x=60\\\\
in\ put\  lever\ arm\ is\ 60in\ long
4 0
3 years ago
A cylindrical metal pipe has external diameter of 6cm and internal diameter of 4cm. Calculate the volume of metal in a pipe of l
ArbitrLikvidat [17]

Answer:

volume is 1570 cm³

mass is 12560 g

Step-by-step explanation:

1m = 100 cm

the volume is :

1/4 x \pi x 6² x 100 - 1/4 x \pi x 4² x 100

= 900 \pi - 400 \pi              { v = 1/4 \pi d²h }

= 500 \pi

= 500 x 3.14

= 1570 cm³

the mass of the pipe is:

1570 x 8 = 12560 grams

5 0
3 years ago
If a line has a midpoint at (2,5), and the endpoints are (0,0) and (4,y), what is the value of y? Please explain each step for a
Dovator [93]

Answer:

y = 10

Step-by-step explanation:

To find the y coordinate of the midpoint, take the y coordinates of the endpoints and average

(0+y)/2 = 5

Multiply each  die by 2

0+y = 10

y = 10

3 0
3 years ago
PLZ ANSWER ASAP
Vinil7 [7]
The distance formula between the line is:
\sqrt{{(x1 - x2)}^{2}  +  {(y1 - y2)}^{2} }
Thus,the distance of the above:
\sqrt{ {( - 1 - 4)}^{2}  + {(5 - 1)}^{2}  }  \\  =  \sqrt{ { - 5}^{2} +  {4}^{2}  }  \\  =  \sqrt{25 + 16 }  \\  =   \sqrt{41}  \\  = 6.4

The answer is 6.4 units.

Hope it helps!
3 0
3 years ago
Read 2 more answers
If Catherine traveled 1,600 miles in 8 hours on her plane flight to her vacation destination, at what rate was the plane traveli
Sladkaya [172]

Answer:

c.200

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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