The ideal length of a particular metal rod is 30.5 cm. The measured length may vary from the ideal length by at most 0.015 cm. What is the range of acceptable lengths for the rod?

Hey there!

There are a few ways to do this, but I'll give you the one I can explain best.

This is a right triangle. We know this because one of the angles is 90º.

The lengths of the sides of the right triangle can be represented by the following equation:

a² + b² = c²

We already have the values for a and c, c being the hypotenuse.

3² + b² = (√18)²

Let's square a and c.

9 + b² = 18

Subtract 9 from each side of the equation.

b² = 9

To find the final value for b, find the square root of each side of the equation.

b = 3

Your answer is 3, or option D.

Hope this helps!

The length of leg s in the right angled triangle given is 3.

What is the triangle?

A triangle is a three-sided polygon with three edges and three vertices. the sum of angles in a triangle is 180 degrees. A right angled triangle is a triangle in which of its angle measure 90 degrees.

Here, we have,

This is a right triangle. We know this because one of the angles is 90º.

The lengths of the sides of the right triangle can be represented by the following equation:

a² + b² = c²

We already have the values for a and c, c being the hypotenuse.

3² + b² = (√18)²

Let's square a and c.

9 + b² = 18

Subtract 9 from each side of the equation.

b² = 9

To find the final value for b, find the square root of each side of the equation.

b = 3

The answer is 3, or option D.

To learn more about triangles, please check: brainly.com/question/22949981

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Answer:

4 and 4/5

Step-by-step explanation:

Answer:

it depends on how many he can clean in a single hour.

if he cleans 2/5 pools thats 10 pools in 25 hours

Step-by-step explanation:

if he cleans one pool per hour, thats 25 pools in 25 hours. if he can clean 4 pools an hour, thats 100 pools in 25 hours.

Answer: To find the best estimate for the amount of money Megan has left, we need to subtract the amount she spent from the initial amount she had. Megan started with $45.12, and she spent $7.89 for lunch and $21.25 for sunglasses.

First, let's subtract $7.89 from $45.12:

$45.12 - $7.89 = $37.23

Next, let's subtract $21.25 from $37.23:

$37.23 - $21.25 = $15.98

So, the best estimate for the amount of money Megan has left is $15.98.

Out of the given options, the closest estimate to $15.98 is $16. Therefore, the correct answer is $16.

Answer:

$16

If this helped you let me know so I will know to keep helping. If not, I will improve and make sure my work is correct. Have a nice day!