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3 years ago

Please please please need help on this one

Mathematics

1 answer:

11111nata11111 [884]3 years ago

3 0

The equation for slope intercept would be y=mx+b. b is the y intercept, and Since the line intersects the y-axis at -4, b is equal to -4. The slope (m) is rise over run, so it equals -4/2. That simplifies to -2. It comes from the amount of units it goes up, and the amount of units it goes left or right. If it goes left it is negative. So overall the equation is y=-2x-4

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A cylindrical can has a volume of 16 cm 3. What dimensions yield the minimum surface area? 1. The radius of the can with the mi

kykrilka [37]

Answer:

radius = 1.37 cm

height = 2.71 cm

Step-by-step explanation:

We are given volume = 16 m³.

Formula for volume of a cylinder is;

V = πr²h

Thus,

πr²h = 16

h = 16/πr²

Now formula for the surface area is;

S = 2πr² + 2πrh

Putting 16/πr² for h gives;

S = 2πr² + 2πr(16/πr²)

S = 2πr² + 2π(16/πr)

S = 2π(r² + 16/πr)

To minimize, we will find the derivative of S and equate to zero

S' = 2π(2r - 16/πr²) = 0

4πr - 32/r² = 0

4πr = 32/r²

r³ = 32/4π

r = ∛(32/4π)

r = 1.37 cm

From h = 16/πr²;

h = 16/(π × 1.37²)

h = 2.71 cm

5 0

4 years ago

I need help :( the question is hard can you explain and show your work ty

Anika [276]

20%
step by step explanation

3 0

3 years ago

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Marni buys 2.5 pounds of grapefruit for $4.48. To the nearest cent, how much would 6 pounds of grapefruit cost?

Vinil7 [7]

Answer:

4.48 x (6/2.5) = $10.75

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3 years ago

Which of the following numbers are irrational?

sweet [91]

The number are 1/4 π and $\sqrt[3]{9}$ are irrational number.

It is required to choose the numbers are irrational.

<h3>What is real number?</h3>

Real numbers are numbers that include both rational and irrational numbers. Rational numbers such as integers (-2, 0, 1), fractions(1/2, 2.5) and irrational numbers such as √3, π(22/7), etc., are all real numbers.

Given that:

The given option are

-2.3456 =-23456/10000

since, -2.3456 can be represented as rational numbers.

π is an infinite decimal, so it cannot be expressed as a rational number.

So, 1/4 π is irrational number.

$\sqrt[3]{9}$ is an irrational number.

2 + √16=2+4= 6 is a rational number.

Therefore, the number are 1/4 π and $\sqrt[3]{9}$ are irrational number.

Learn more about real number here:

brainly.com/question/551408

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2 years ago

Find the value of x if necessary you may learn what the marking on a figure indicate

kolezko [41]

Answer:

Step-by-step explanation:

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3 years ago