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3 years ago

Find the value of 3x+ 4 when x = 2

Mathematics

2 answers:

Firdavs [7]3 years ago

7 0

Answer:

3x+4, x=2

3(2)+4

6+4=10

vodka [1.7K]3 years ago

7 0

Hello there! :-)

To find the value of 3x+4 when x=2, all we have to do is substitute the value of 2 into the expression:

3x+4

3(2)+4

6+4

Therefore, the answer is 10.

Hope this helps. Use the comment section to clarify your doubts.

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castortr0y [4]

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Calculate the Highest common factor of 130,260,390

qwelly [4]

the Highest common factor of 130,260,390 = 130

130 = 2⋅5⋅13

260 = 2⋅2⋅5⋅13

390 = 2⋅3⋅5⋅13

Common multipliers (130; 260; 390): 2, 5, 13

Now to find the highest Common factor you need to multiply the common factors

Answer: (130 ; 260 ; 390) = 2 ∙ 5 ∙ 13 = 130

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3 years ago

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Find the lateral area and surface area of a cone with a radius of 12 and a height of 21

marishachu [46]

Answer:

The Lateral Surface Area is 911.32 square unit and

Total Surface Area is 1361.7 square unit.

Step-by-step explanation:

For a given Cone

Radius (r) = 12

Height (h) = 21

For Lateral Surface Area

<h3>Formula: </h3>

A = πr√r² + h²

A = 3.14 × 12 × √(12)² + (21)²

A = 3.14 × 12 × √144 + 441

A = 3.14 × 12 × √585

A = 37.68 × 24.18

A = 911.32 square unit

Now,

For Total Surface Area

<h3>Formula:</h3>

A = πrl + πr²

For Slant height (l)

l² = r² + h²

l² = (12)² + (21)²

l² = 144 + 441

l² = 585

l = 24.18

So,

A = πrl + πr²

A = πr(l + r)

A = 3.14 × 12 × (24.14 + 12)

A = 3.14 × 12 × 36.14

A = 1361.7 square unit

Thus, The Lateral Surface Area is 911.32 square unit and Total Surface Area is 1361.7 square unit.

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Xelga [282]

Answer:

Step-by-step explanation:

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Alja [10]

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