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3 years ago

Hi:) anyone able to explain this formula? Thanks!

Mathematics

1 answer:

stealth61 [152]3 years ago

3 0

Answer:

Step-by-step explanation:

This basically the general formula of Slope point form for the linear equation.

Defining the slope of the line and a point on the line (not actually the y-intercept)

(x1,y1) = Point on the line

m = slope on the line

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✎Question:Amirah is 4 years elder than Priya and Shirley is 2 years younger than Priya. If the sum of their ages is 47, find the

Gnom [1K]

Answer:

Priya's age = 15

Amirah's age = 19

Shirley's age = 13

Step-by-step explanation:

Let x be the age of Priya.

According to the question,

Amirah's age = x + 4

Shirley's age = x - 2

Their sum is 47.

So,

x + 4 + x + x - 2 = 47

3x + 2 = 47

3x = 47 - 2

3x = 45

x = 45/3

x = 15

So,

Priya's age = 15

Amirah's age = 15 + 4 = 19

Shirley's age = 15 - 2 = 13

7 0

3 years ago

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A company is designing a new cylindrical water bottle. The volume of the bottle will be 211 cm^3. The height of the water bottle

Zinaida [17]

Answer:

The correct answer is 2.912 cm.

Step-by-step explanation:

A company is designing a new cylindrical water bottle.

Volume of a cylinder is given by π × $r^{2}$ × h, where h is the height of the cylinder and r is the radius of the cylinder.

The volume of each bottle will be 211 $cm^{3}$ .

The height (h) of the water bottle be 7.9 cm.

Let the radius of the bottle be r cm.

∴ π × $r^{2}$ × h = 211 ; (π = 3.15)

⇒ $r^{2}$ × 24.885 = 211

⇒ r = 2.912

The radius of the water bottle is 2.912 cm.

4 0

3 years ago

The average age of a football player in a league is 27.

KonstantinChe [14]

Answer:

x¯ = 28 years

μ = 27 years

Step-by-step explanation:

Add all the ages and divide the 12 players.

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3 years ago

3x + 8 < 4(x - 3)Solve the inequality and graph the solution set.

solmaris [256]

Step-by-step explanation:

3x+8<4x−12

Move all terms containing x

to the left side of the inequality.

Tap for more steps...

−x+8<−12

Move all terms not containing x

−x<−20

x>20

Interval Notation:(20,∞)

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3 years ago

Simplify (2^3)^–2. A: -1/64 B: 1/64 C: 2 D: 64

lions [1.4K]

Answer:

B: 1/64

Step-by-step explanation:

2^3 = 8

8^(-2)=1/(8^2)=1/64

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3 years ago