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k0ka [10]
3 years ago
12

4 solid cubes were made out of the same material. All four have different side lengths: 6cm, 8cm, 10cm, and 12cm. How to distrib

ute the cubes onto two plates of a scale so the scale is balanced?
Mathematics
1 answer:
statuscvo [17]3 years ago
8 0

Answer:

The volumes of the cubes are 6³ = 216, 8³ = 512, 10³ = 1,000 and 12³ = 1,728 for a combined volume of 216 + 512 + 1,000 + 1,728 = 3456 which means that each side of the scale must have a combined volume of 3456 / 2 = 1728. This means that in order for the scale to be balanced we need to put the 12 cm cube on one side and the other 3 cubes on the other side.

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What is the slope of the line that contains these points?<br> (-1,10) (0,18) (1,26) (2,34)
-BARSIC- [3]

The slope of the line that contains these points (-1 , 10) , (0 , 18) , (1 , 26) ,

(2 , 34) is 8

Step-by-step explanation:

You can find the slope of a line from any two points lie on it

  • The formula of the slope is m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}
  • (x_{1},y_{1}) and (x_{2},y_{2}) are two points lie on it

∵ A line contains these points (-1 , 10) , (0 , 18) , (1 , 26) , (2 , 34)

- To find the slope of the line chose any to points

∵ Points (0 , 18) and (1 , 26) lie on the line

∴ x_{1} = 0 and x_{2} = 1

∴ y_{1} = 18 and y_{2} = 26

- Substitute these values in the formula of the slope above

∵ m=\frac{26-18}{1-0}

∴ m=\frac{8}{1}

∴ m = 8

The slope of the line that contains these points (-1 , 10) , (0 , 18) , (1 , 26) , (2 , 34) is 8

Learn more:

You can learn more about the slope of a line in brainly.com/question/12954015

#LearnwithBrainly

7 0
3 years ago
Neptune’s diameter is a little less than 5 x 10 with a power of 7 meters.how is this number expressed in standard notation
UNO [17]

Answer:

So scientific notation would be 5 x 10 ^7, and standard would be 50,000,000

Step-by-step explanation:

The 7 means you move the decimal to the right 7 times, meaning you add 7 zeros.

4 0
3 years ago
Cannon sells the IVY REC for $130. Early crowdfunders could buy it for $104. What is this discount written as a percent?
MrMuchimi

Answer:

20%

Step-by-step explanation:

First, find the difference between $130 and $104. This equals $26, and to find this discount written as a percent, divide $26 by the original cost of the camera. 26/130=0.2, which represents a 20% discount.

3 0
2 years ago
Read 2 more answers
X^2 + Y^2 +ax + 2y + 3 = 0<br><br> What number is this equation the equation of a circle?
Sav [38]

Answer:

Eq: (x+a/2)²+(y+1)²=(a²-8)/4

Center: O(-a/2, -1)

Radius: r=0.5×sqrt(a²-8)

Mandatory: a>2×sqrt(2)

Step-by-step explanation:

The circle with center in O(xo,yo) and radius r has the equation:

(x-xo)²+(y-yo)²=r²

We have:

x²+y²+ax+2y+3=0

But: x²+ax=x²+2(a/2)x+a²/4-a²/4= (x+a/2)²-a²/4

And

y²+2y+3=y²+2y+1+2=(y+1)²+2

Replacing, we get:

(x+a/2)²-a²/4+(y+1)²+2=0

(x+a/2)²+(y+1)²=a²/4-2=(a²-8)/4

By visual inspection we note that:

- center of circle: O(-a/2, -1)

- radius: r=sqrt((a²-8)/4)=0.5×sqrt(a²-8). This means a²>8 or a>2×sqrt(2)

6 0
3 years ago
O,my god if you do this 2 pages I will be done with my homework
katovenus [111]

Answer:

1. 8% of 50 is 4

2. 95% of 40 is 38

3. 42% of 263 is 110.46

4. 110% of 70 is 77

5. 115% of 20 is 23

6. 130% of 78 is 101.4

7. 6.5% of 50 is 3.25

37. 15% of 50 is 7.5

38. 5% of 19 is 0.95

39. 8% of 275 is 22

I hope this helps! Can I plz have a Brainliest??

Step-by-step explanation:

6 0
2 years ago
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