All categories

2 years ago

Pls help me step by step faster if you can

Mathematics

1 answer:

Veronika [31]2 years ago

6 0

Answer:

Step-by-step explanation:

If you meant to type x+1<21, then we simplify this inequality by subtracting 1 from both sides, ending up with x < 20.

I do not recognize what your "4" represents.

You might be interested in

6. What is the greatest common factor of the following expression? *<br> 15y3 – 40y

Nady [450]

Answer:

I'm not sure what 15y3 is, but I'll take a guess.

If the only numbers are 15, 3, and -40, then the greatest common factor is 1.

If the only numbers are 15 and 3, then it's three.

If the only numbers are 15 and -40, it would be 5.

5 0

2 years ago

Please help!

zepelin [54]

9514 1404 393

Answer:

14 minutes

Step-by-step explanation:

Let t represent the time it took Suki to pick out her pumpkin. The given relation is ...

10t -13 = 127 . . . . . equation for minutes to carve

10t = 140 . . . . . . . . add 13

t = 14 . . . . . . . . . . divide by 10

It took Suki 14 minutes to pick out her pumpkin.

5 0

2 years ago

Question part points submissions used use newton's method with the specified initial approximation x1 to find x3, the third appr

serious [3.7K]

Set $f(x)=2x^3-3x^2+2$ . Find the tangent line $\ell_1(x)$ to $f(x)$ at the point when $x=x_1$ :

$f'(x)=6x^2-6x\implies f'(x_1)=12$ (slope of $\ell_1$ )

$\implies\ell_1(x)=12(x-x_1)+f(x_1)=12(x+1)-3=12x+9$

Set $x_2=-\dfrac9{12}$ , the root of $\ell_1(x)$ . The tangent line $\ell_2(x)$ to $f(x)$ at $x=x_2$ has slope and thus equation

$f'(x_2)=\dfrac{63}8\implies\ell_2(x)=\dfrac{63}8\left(x+\dfrac9{12}\right)-\dfrac{17}{32}=7x+\dfrac{151}{32}$

which has its root at $x_3=-\dfrac{151}{224}\approx-0.6741$ .

(The actual value of this root is about -0.6777)

5 0

2 years ago

which ordered pairs are a solution to the equation? y=3x Select all that apply (-1,3) (2,5) (1,3) (-2,-6)

trasher [3.6K]

(1,3) and (-2,-6) are both solutions

5 0

3 years ago

Read 2 more answers

Two trains, Train A and Train B weigh a total of 479 tons. Train A is heavier than Train B. The difference of their weights is

Marysya12 [62]

Answer:

A= 429

B= 50

Explanation:

A+B= 479 (take away)

A-B= 379

A-A+B+B= 479-379 (simplify)

2B= 100

I think you know how to do it now..

B=50

A=50+379 ---> 429

This is the substitution method, there are other ways of doing it- and I tried to make this simple. Hope this helped!

3 0

3 years ago