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3 years ago

The points (-1, r) and (2, 3) lie on a line with slope -1.Find the missing coordinate r

Mathematics

1 answer:

Tomtit [17]3 years ago

8 0

Answer:

r=0

Step-by-step explanation:

1) Place point (2, 3) on graph.

2) Use the slope of -1 to go left -1 and go down -1

3) Until you get to x value of -1

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If ∠x= 55, then find the values of a, b, c and d

AnnyKZ [126]

Answer:

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2 years ago

Use Newton's method with initial approximation x1 = −2 to find x2, the second approximation to the root of the equation x3 + x +

nevsk [136]

Answer:

$x_2 \approx -1.769$

Step-by-step explanation:

Let $f(x)=x^3+x+7$

So $f'(x)=3x^2+1$

$x_{n+1}=x_n-\frac{f(x_n)}{f'(x_n)}$

Let $x_1=-2$

We are going to find $x_2$

So we are evaluating $-2-\frac{f(-2)}{f'(-2)}$

First step find f(-2)

Second step find f'(-2)

Third step plug in those values and apply PEMDAS!

$f(-2)=(-2)^3+(-2)+7=-8-2+7=-10+7=-3$

$f'(-2)=3(-2)^2+1=3(4)+1=12+1=13$

$x_2=-2-\frac{-3}{13} \\\\ x_2=\frac{-26+3}{13} \\\\ x_2=\frac{-23}{13} \\\\ x_2 \approx -1.769$

5 0

3 years ago

What to do from here? (Please don't solve)

Tems11 [23]

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5 0

3 years ago

Divide mentally<br> 270 divide 3=

yanalaym [24]

27/3 = 9 so 270/3 = 90

4 0

3 years ago

Read 2 more answers

5d-2/3c if d =4 and c =3 evaluate fast fast

Mademuasel [1]

Answer:

Step-by-step explanation:

Plug 4 in for d and 3 in for c

5d-2/3c

5(4)-2/3(3)

Multiply in the numerator and the denominator

20-2/9

Subtract in the numerator

18/9

Hope this helps! :)

4 0

3 years ago