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FinnZ [79.3K]
3 years ago
9

Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination. 2x + 6y = 6 3x + 9y = 9

Mathematics
1 answer:
Elan Coil [88]3 years ago
5 0
The answer is x=-3/40 :)
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1/6+1/12 Write the Awnser in lowest terms Show your work
Nezavi [6.7K]

Answer:

1/4

Step-by-step explanation:

1/6 + 1/12

Multiply the numerator and denominator of the first fraction by 2.

2/12 + 1/12

Add both fractions, because they have a common denominator.

3/12

The fraction can be further simplified.

1/4

6 0
3 years ago
3 ≤ 1 -u/32 help plz
NeTakaya

Answer:

1. multiply 32 on both sides to get rid of the fraction

which leaves you with

68≤1-u

2. You can add the U to one side and subtract 68 from the other side

which leaves you with

u≤-67

7 0
3 years ago
Solve 15 3/4 ÷ 2 5/8 × 5 5/6 ÷ 8 2/5​
fenix001 [56]

Answer:

4 1/6

Step-by-step explanation:

15 3/4 ÷ 2 5/8 × 5 5/6 ÷ 8 2/5

assuming this order of operations:

(15 3/4 ÷ 2 5/8) × (5 5/6 ÷ 8 2/5)

63/4 x 8/21 = 505/84 = 6

35/6 x 5/42 = 175/252

6 x 175/252 = 1050/252 = 4 42/252 = 4 1/6

8 0
3 years ago
Find the surface area of the composite figure. Round to the nearest square centimeter
Goryan [66]

Answer:

Surface area = 726 cm²

None of the options is correct.

Step-by-step explanation:

Surface area of the composite figure = surface area of cone + surface area of cylinder - 2(area of base of cone)

✔️Surface area of cone = πr(r + l)

Where,

Radius (r) = 5 cm

Slant height (l) = √(10² + 5²) (Pythagorean theorem)

Slant height (l) = 11.2 cm

Plug in the values

= π*5(5 + 11.2)

= 254.5 cm²

✔️Surface area of the cylinder = 2πr(h + r)

r = 5 cm

h = 15 cm

Plug in the values into the formula

S.A = 2*π*5(15 + 5)

S.A = 628.3 cm²

✔️area of base of cone = πr²

r = 5 cm

Area = π*5² = 78.5 cm²

✅Surface area of the composite figure = 254.5 + 628.3 - 2(78.5)

= 882.8 - 157

= 726 cm² (nearest square meter)

None of the options is correct.

7 0
3 years ago
2. A businessman starts
Leokris [45]

Answer:

0

Step-by-step explanation:

He loses it all in 2 hours

4 0
3 years ago
Read 2 more answers
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