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drek231 [11]
3 years ago
9

Anybody know the answers??? Helpppp

Mathematics
1 answer:
goldenfox [79]3 years ago
8 0

Answer:

2. x = 135

Step-by-step explanation:

im not sure about question 1

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The iron cube of side 42 com has a hole of diameter 14cm
Nata [24]

Answer:

Step-by-step explanation:

Total surface of the cube = 6a²

                                          = 6 * 42 * 42

                                          = 10584 cm²

Hole that is drilled out, will make a cylinder shape in the middle of the cube

Volume  of iron in the cube = Volume of cube  - volume of cylinder

Volume of cube = a³

                          = 42 * 42 * 42

                         = 74088 cm³

Cylinder:

r = 14/2 = 7 cm

h = sideof the cube = 42 cm

Volume = πr²h

            =\frac{22}{7}*7*7*42\\\\=22*7*7*6

           = 6468 cm³

Volume  of iron in the cube = Volume of cube  - volume of cylinder

                                             = 74088 - 6468

                                             = 67620 cm³

5 0
3 years ago
Find the simple interest. $18,981 at 9% for 208 days
FrozenT [24]
Since the interest is simple, you don't have to compound it multiple times. You just need to divide the 208 days with 365days. The calculation would be:

interest= principal * number of year * rate 
interest=  $18,981 * 208/365 * 9%=$973.49
5 0
3 years ago
What is the value of 8x + 2x when x = 6?
ella [17]
8x + 2x

Plug the variable in.

8×6 + 2×6

48+12 = 60
7 0
3 years ago
Read 2 more answers
How long does it take to drive 30 miles at 75 mph?
Mazyrski [523]
If you didn't go in a straight line, you will not reach 30 miles but however 30 miles, in general, going at a pace of 75mph it would take you 1 through 1 hour and a half.
3 0
3 years ago
What is the simplest for of the fraction 464/24?<br>(I'LL MARK U BRAINLIEST!)
ycow [4]
Simplest form would be 58/3
6 0
3 years ago
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