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3 years ago

work out the equation of the line which passes through the point (-1, 2) and is paralell to the line y = x + 4

Mathematics

1 answer:

notka56 [123]3 years ago

3 0

Step-by-step explanation:

working g and everything is above

hope its of help

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Hallar la ecuación de la recta que pasa por los puntos A(1,3) y B(3,7). Representarla gráficamente. Indicar su pendiente.

Fynjy0 [20]

Answer:

Step-by-step explanation:

la recta:

$y-yo=m(x-xo)$ (*)

P=(xo,yo)

$m=\frac{Ya-Yb}{Xa-Xb}$

substituindo:

$m=\frac{3-7}{1-3}\\\\m=2$

Seja P=A=(xo=1,yo=3), utilizando a formula (*)

$y-3=2(x-1)\\y=2x-2+3\\y=2x+1$

3 0

3 years ago

Joe has one book each for algebra, geometry, history, psychology, Spanish, English and Physics in his locker. How many different

Alisiya [41]

Answer:

There are 35 different sets of 3 books Joe could choose

Step-by-step explanation:

* Lets explain how to solve the problem

- Combination is a collection of the objects where the order doesn't

matter

- The formula for the number of possible combinations of r objects from

a set of n objects is nCr = n!/r!(n-r)!

- n! = n(n - 1)(n - 2)................. × 1

Lets solve the problem

- Joe has one book each for algebra, geometry, history, psychology,

Spanish, English and Physics in his locker

∴ He has seven books in the locker

- He wants to chose three of them

∵ The order is not important when he chose the books

∴ We will use the combination nCr to find how many different sets

of three books he can choose

- The total number of books is 7

∴ n = 7

∵ He chooses 3 of them

∴ r = 3

∵ 7C3 = 7!/3!(7 - 3)! = 7!/3!(4!)

∴ $7C3=\frac{(7)(6)(5)(4)(3)(2)(1)}{[(3)(2)(1)][(4)(3)(2)(1)]}=35$

∴ 7C3 = 35

* There are 35 different sets of 3 books Joe could choose

3 0

3 years ago

If √7-y=6, then y= -29 -5 1 29 I don't know

sleet_krkn [62]

Hello!

√7 - y = 6 <=>

<=> -y = 6 - √7 <=>

<=> y = -6 + √7 => √7 - (-6 + √7) = 6

Good luck! :)

5 0

3 years ago

The graph of Y = COS X+ż is the graph of the y = cos(x) shifted in which direction?

rjkz [21]

Answer:

2 units up

Step-by-step explanation:

You're just taking the entire graph of cos(x) and then adding 2 so it moves everything up. If you added 2 to x BEFORE taking the cosine

(like y = cos (x+2) ), then you would shift it left 2. Adding and subtracting from the x moves everything left or right. Adding or subtracting at the end just moves it up and down.

3 0

3 years ago

Amy has 5 yards of border to put around a garden. She uses all the border to make four sections that are the same length. Which

9966 [12]

I added a screenshot of the question along with the given choices

Answer:
F. 4 ÷ 5

Explanation:
We know that Amy has 5 yards of boarders and that she will use them to make 4 equal borders.
This means that:
she will divide 5 yards by 4 to know the length of each border

Among the given choices, choices G, H and J show the division of 5 by 4 which is correct representation of the length
On the other hand. choice F shows the division of 4 by 5 which is an incorrect representation of the length.

Hope this helps :)

5 0

3 years ago

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