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krok68 [10]
3 years ago
15

HELPPPPP...........

Mathematics
1 answer:
Blababa [14]3 years ago
6 0

Answer:

3 and 4 are the only ones that are right angles.

Step-by-step explanation:

A^2+B^2=C^2

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Three cubes of the same metal, whose edges are 6, 8, 10 cm are meltedand formed into a single cube. Find the diagonal of the sin
allochka39001 [22]

Answer: 12√2 cm

<u>Step-by-step explanation:</u>

Cube 1: V = 6³ = 216

Cube 2: V = 8³ = 512

Cube 3: <u>V = 10³ = 1000</u>

New Cube: V = 1728

1728 = s³

12 = s

So, each side of the new cube is 12 cm.

Use Pythagorean Theorem to find the length of the diagonal:

12² + 12² = diagonal²

144 + 144 = diagonal²

288 = diagonal²

√288 = diagonal

12√2 = diagonal


3 0
3 years ago
Solve the system of equations using the substitution method.<br> -5x − 3y = 16<br> y = x
max2010maxim [7]

Answer:

-5x - 3x = 16

-8x = 16

x = -2

y = x

Step-by-step explanation:

3 0
3 years ago
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The car treves 15 milies in 3 hours.
solong [7]

9514 1404 393

Answer:

  • 5 mph
  • 50 miles

Step-by-step explanation:

To find miles per hour, divide miles by hours:

  (15 mi)/(3 h) = 15/3 mi/h = 5 mi/h

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To find distance, multiply speed by time.

  (5 mi/h) × (10 h) = 50 mi

3 0
2 years ago
A right triangle has a hypotenuse of 10 feet and a leg of 6 feet. What is the length of the other leg?
Artemon [7]

Answer:

The other length of the leg is <em>8 feet.</em>

Step-by-step explanation:

To find the answer we have to find what<em> 10</em> and <em>6 is squared.</em>  <em>10 x 10 = 100</em>.  

<em>6 x 6 = 36.  </em>Now since we are trying to find the length of the other leg, we will <em>subtract 100 from 36</em> and we get <em>64</em>.  Then for the last step, we will figure out what number<em> squared equals 64.</em>  Because 8 x 8 = 64, <em>8 is our answer.</em>

3 0
3 years ago
A number times six plus the same number times two
Travka [436]

Answer:

6x +2x

Step-by-step explanation:

when the number= x, you can just form the equation as per usual. 6x = a number times 6; 2x = a number times 2.

x is used bc the number is an unknown value. only x can be used bc it is stated the same number. hsing different alphabets such as y or z indicates the unknown value ia different.

6 0
3 years ago
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