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3 years ago

What is 2,153.21 rounded to the hundreds place?

2 answers:

7 0

Find the digit in the hundred's place, which is 1. Look to the number right to the right of it. If it is 5 or greater, it increases. It is 5, so 1 becomes 2. All other digits behind it become 0's. Your answer is 2,200.

adelina 88 [10]3 years ago

4 0

2,200 because the 5 will be rounded up

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Michelle has 21 ⅙ cups of flour in a container. She uses 6 ⅚ cups of flour to make 5 loaves of bread. How much flour does Michel

Bezzdna [24]

It should be about -13 cups

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3 years ago

A right triangle has a hypotenuse length of 12, and one side length of 9. find the missing side length. do the side lengths form

Rina8888 [55]

Use the Pythagorean theorem:

$a^2+b^2=c^2$

c - a hypotenuse

a, b - legs

We have: a = 9 and c = 12. Substitute:

$9^2+b^2=12^2$

$81+b^2=144$ <em>subtract 81 from both sides</em>

$b^2=63\to b=\sqrt{63}\\\\b=\sqrt{9\cdot7}\\\\b=\sqrt9\cdot\sqrt7\\\\ \boxed{b=3\sqrt{7}}$

A Pythagorean triple consists of three positive integers a, b and c, such that

$a^2+b^2=c^2$ .

$b=3\sqrt{7}$ is not positive integer.

<h3>The sides of the triangle do not form a pythagorean triple.</h3>

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4 years ago

If f(x)=ln(sin(2x)), f''(π/4) is equal to

Licemer1 [7]

Use the chain rule to compute the second derivative:

$f(x)=\ln(\sin(2x))$

The first derivative is

$f'(x)=(\ln(\sin(2x)))'=\dfrac{(\sin(2x))'}{\sin(2x)}=\dfrac{\cos(2x)(2x)'}{\sin(2x)}=\dfrac{2\cos(2x)}{\sin(2x)}$

$f'(x)=2\cot(2x)$

Then the second derivative is

$f''(x)=(2\cot(2x))'=-2\csc^2(2x)(2x)'$

$f''(x)=-4\csc^2(2x)$

Then plug in π/4 for <em>x</em> :

$f''\left(\dfrac\pi4\right)=-4\csc^2\left(\dfrac{2\pi}4\right)=-4$

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4 years ago

Triangle ABC is reflected to form Triangle A’B’C

SVEN [57.7K]

Answer:

I believe it is reflection across the x axis.

Callie

P..S Are you in k12

Step-by-step explanation:

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3 years ago

Read 2 more answers

Triangle ABC is shown below.

inna [77]

Answer:

the answer is 14 C

Step-by-step explanation:

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3 years ago