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3 years ago

Explain why there must be at least two lines on any given plane.

Mathematics

2 answers:

Ghella [55]3 years ago

6 0

There must be 2 lines on every plane because you need a y-axis and an x-axis.

3241004551 [841]3 years ago

5 0

There exists one plane through any three noncollinear points. Since the points cannot be on the same line, at least two lines would have to pass through any of the three points

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1. Evaluate 3y - 4 for y =5

irina1246 [14]

Answer:

1. Evaluate 3y - 4 for y =5

3*(5)-4=15-4=11

2. 65 + x = 99 x = ?

65+x=99

x=99-65

x=34

3. Find the product. 38.7 *21

38.7*21=812.7

4. Which value satisfies the equation? 9x + 3 = 30

The right value for x would be:

9x+3=30

9x=30-3

9x=27

x=27/9=3

Step-by-step explanation:

3 0

3 years ago

If f(x) =1/x and g(x) = x - 2 what is f(g(x)) when X = 1

Fed [463]

Answer:

f(g(x)) = -1

Step-by-step explanation:

$f(x) = \frac{1}{x} \\ \\ g(x) = x - 2 \\ \\ \implies \: f(g(x)) = \frac{1}{x - 2} \\ \\ \implies \: f(g(1)) = \frac{1}{1 - 2} \\ \\ \implies \: f(g(1)) = \frac{1}{ - 1} \\ \\ \implies \: f(g(1)) = - 1$

8 0

2 years ago

Negative ten is no less than two times a number plus fourteen <br> can you please solve it

natta225 [31]

Answer:

-12≥x

Step-by-step explanation:

-10≥2x+14

-24≥2x

-12≥x

7 0

3 years ago

A sphere has a diameter of 14.5 inches.

dlinn [17]

Answer:

≈ 660.5 in²

Step-by-step explanation:

The surface area (A) of a sphere is calculated using the formula

A = 4πr² ← r is the radius

Given diameter = 14. 5 then radius = 7.25, thus

A = 4π × 7.25² = 4π × 52.5625 ≈ 660.5 in²

4 0

3 years ago

5. Skylar has pool toys shaped like a sphere

slega [8]

Answer:

128π or 402.12

Step-by-step explanation:

Vol of a sphere = 4/3πr³

Sub 2 into ^

Multiply by 12 to find vol of all 12 shapes

This is the volume of water needed

6 0

3 years ago