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Anestetic [448]

3 years ago

6

Solve the equation by completing the square

%208" id="TexFormula1" title=" {k}^{2} - 8k + 20 = 8" alt=" {k}^{2} - 8k + 20 = 8" align="absmiddle" class="latex-formula">

1 answer:

love history [14]3 years ago

5 0

This is ageyes ! algebra one or two

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Please please help me on this one

cricket20 [7]

-8/100 or back 8 yards

6 0

3 years ago

The graph of an inverse trigonometric function passes through the point (1, pi/2). Which of the following could be the equation

rodikova [14]

Answer: C) $y=sin^-1 x$

Step-by-step explanation:

Since, the graph of an inverse trigonometric function will pass through the point $(1,\frac{\pi}{2})$ ,

If this point satisfies the function,

For the function $y=cos^{-1} x$

If x = 1

$y=cos^{-1}1=0$

Thus, $(1,\frac{\pi}{2})$ is not satisfying function $y=cos^{-1} x$ ,

⇒ The graph of $y=cos^{-1} x$ is not passing through the point $(1,\frac{\pi}{2})$

For the function $y=cot^{-1}x$

If x = 1

$y=cot^{-1}1=\frac{\pi}{4}$

Thus, $(1,\frac{\pi}{2})$ is not satisfying function $y=cot^{-1}x$ ,

⇒ The graph of $y=cot^{-1}x$ is not passing through the point $(1,\frac{\pi}{2})$

For the function $y=sin^{-1} x$

If x = 1

$y=sin^{-1}1=\frac{\pi}{2}$

Thus, $(1,\frac{\pi}{2})$ is satisfying function $y=sin^{-1} x$ ,

⇒ The graph of $y=sin^{-1} x$ is passing through the point $(1,\frac{\pi}{2})$ .

For the function $y=tan^{-1}x$

If x = 1

$y=tan^{-1}1=\frac{\pi}{4}$

Thus, $(1,\frac{\pi}{2})$ is not satisfying function $y=cos^{-1} x$ ,

⇒ The graph of $y=tan^{-1} x$ is not passing through the point $(1,\frac{\pi}{2})$ .

Hence, Option C is correct.

3 0

3 years ago

Allison measured a line to be 5.4 inches long. If the actual length of the line is 5.5 inches, then what was the percent error o

valentina_108 [34]

Answer:

1.85%

Step-by-step explanation:

→ Find the difference between the actual and predicted

5.5 - 5.4 = 0.1

→ Divide answer by 5.4

0.1 ÷ 5.4 = 0.01851851851

→ Multiply answer by 100

0.01851851851 × 100 = 1.85%

7 0

2 years ago

A science class began recording the height of a plant each day. On day 10, it was 20 cm tall. On day 35, it was 57.5 cm tall. Wh

Simora [160]

The plant grew 1.5 cm each day.

4 0

3 years ago

Read 2 more answers

What is 2/5 of 8 ( i have no idea what to do... Please help ! )

vekshin1

<span>Since 8 is a whole number and ⅖ is a fraction, it doesn’t make it that complicated. Fraction is just like division, you just make the number on the top as your dividend and the number below as your divisor. First, get the quotient of the fraction ⅖ which is 0.4. Since you are looking for the ⅖ of the whole number 8, you need to multiply it. The quotient 0.4 will be multiplied to 8. Or you can simply multiply 2 by 8 and divide it to 5. The answer would be 3.2</span>

3 0

3 years ago