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puteri [66]
3 years ago
11

consider the figure shown assuming the green and red blocks have the same weight where should a single Green Block be placed to

make the scale balance

Mathematics
1 answer:
prisoha [69]3 years ago
5 0
The amount of torque that a mass is based the distance from the fulcrum. The red blocks will create counter-clockwise motion, and the green will create clockwise motion. We need the red and green to be equal.

6 + 4 + 2(2) = 2(3) + 5 + x

14 = 11 + x

x = 3

So the green block should be placed at 3 on top the other two blocks.






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kali bought 6 books for a total of $154. math books cost $27 and English books cost $23. how many of each type of book did she b
kipiarov [429]
She bought 4 English books and 2 math books

27 x 4 = 108
23 x 2 = 46
108+46=154
5 0
2 years ago
The length of a rectangle is 8 feet more than its width. If the width is increased by 4 feet and the length is decreased by 5 fe
alexgriva [62]
Let the width be x.

Length is 8 feet more than width. Length = x + 8

Area = x(x + 8)

width increased by 4, that is,  (x + 4)
Length decreased by 5,    (x + 8 - 5) = (x + 3)

Area  = (x + 4)(x +3)

Area remains the same

x(x + 8) = (x+4)(x +3)

x² + 8x =   x(x +3) + 4(x +3)

 x² + 8x =   x² +3x + 4x +12

x² + 8x =   x² +7x +12        Eliminate x² from both sides

8x = 7x + 12

8x - 7x = 12

x = 12

Dimensions of original rectangle :  x,  x + 8

12, 12 +8 =   12, 20

Original rectangle is   20 feet   by 12 feet 
5 0
3 years ago
Read 2 more answers
Solve for n. 24 = 3(n -5)​
Masteriza [31]

Answer:

n=13

Step-by-step explanation:

24=3(n-5)

24=3n-15

-3n=-24-15

-3n=-39

n=13

8 0
3 years ago
a triangle has a 40° angle, a 120° angle and a side 2.5 centimeters in length. which of the following statements are true about
pochemuha

Answer:

C

Step-by-step explanation:

A triangle is 180 degrees so 120+40 is 160

180-160=20

6 0
2 years ago
Simplify (11 + 5i)(11 - 51)
Ede4ka [16]

Answer:

 (146 +  0i)

Step-by-step explanation:

(11+5i)(11-5i)

The formula is :

(a+bi) • (x+yi)  = ax+by•i^2+(ay+bx)i

and since  i^2 = -1  it can be written as :

ax - by + (ay + bx) i

( 11 +  5i) • ( 11 -  5i) =

 (146 +  0i)

hope this helped brainlest owo???

7 0
3 years ago
Read 2 more answers
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