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3 years ago

PLEASE HELP IT'S DUE IN 20 MINUTES!!!

Mathematics

1 answer:

marissa [1.9K]3 years ago

6 0

6x -19 + 3x + 10 = 180
9x -9 = 180
9x = 189

x = 21

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Let f(x) = - 3x-1, h(x) = - X+3. Find (f o h)(-7)

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Answer:

f(x)= 20 h(x)= -4

Step-by-step explanation:

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The graph of a linear relationship has a slope of -5 and passes through the point (2,-12). Write the equation of the line in slo

kakasveta [241]

Answer:

To graph the line mark off the 2 points and draw a line through them.

Step-by-step explanation:

The slope = (-2-7) / (-3-0)

= -9/-3

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The value of b is found using the point-slope form of a line:

y - y1 = m(x - x1)

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3 years ago

PLEASE HELP

Zanzabum

Answer:

0.5, 5.5

Step-by-step explanation:

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2 years ago

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Write a story that could represent this math problem.

strojnjashka [21]

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Jake has 4 Oreos he wants 3/8 times the amount of Oreos . How many Oreos does jake want?

Step-by-step explanation:

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Use the Taylor series to estimate LaTeX: sin(x)s i n ( x ) about LaTeX: a = 0a = 0. Truncate to 6 terms (including terms that si

ololo11 [35]

Answer:

$E_{r}=0.005%$ %

Step-by-step explanation:

The Taylor series of a function around a value ("a" is this case) is:

$f(x)=f(a)+\frac{f'(a)(x-a)}{1!}+\frac{f''(a)(x-a)^{2}}{2!}+...$

f' is the first derivative, f'' the second, and so on
a=0

If f(x)=sin(x), the Taylor series will be:

$sin(x)=sin(0)+\frac{cos(0)(x-0)}{1!}-\frac{sin(0)(x-0)^{2}}{2!}-\frac{cos(0)(x-0)^{3}}{3!}+\frac{sin(0)(x-0)^{4}}{4!}+\frac{cos(0)(x-0)^{5}}{5!}$

We truncate to 6 term as the question says.

Now, sin(0)=0 and cos(0)=1.

$sin(x)=x-\frac{x^{3}}{6}+\frac{x^{5}}{120}$

Let's find sin(π/4) using the Taylor series and with the calculator, and then calculate the relative error.

<u>Taylor series</u>

$sin(\frac{\pi}{4})=\frac{\pi}{4}-\frac{(\frac{\pi}{4})^{3}}{6}+\frac{(\frac{\pi}{4})^{5}}{120}=0.707143058$

<u>Calculator</u>

$sin(\frac{\pi}{4})=0.7071067812$

The relative error will be:

$E_{r}=\left |1-\frac{V_{aprox}}{V_{real}} \right |*100=0.005\%$

I hope it helps you!

6 0

3 years ago