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3 years ago

????????????????????? Helpppp please

Mathematics

1 answer:

LekaFEV [45]3 years ago

6 0

Answer:

see explanation

Step-by-step explanation:

(a)

Following the direction of the arrow, the vector is from tail to nose, 3 units left in the x- direction (- 3) and 2 units up in the y- direction ( + 2), thus

d = $\left[\begin{array}{ccc}-3\\2\\\end{array}\right]$

(b)

Add the corresponding components in the 2 vectors

h + k = $\left[\begin{array}{ccc}4-2\\-3-1\\\end{array}\right]$ = $\left[\begin{array}{ccc}2\\-4\\\end{array}\right]$

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Giving brainlist to whoever answers plz

Elanso [62]

Answer:

Okay! It should be the 3 one.

-2(3)+30=24

Step-by-step explanation:

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2 years ago

Read 2 more answers

A) What is the slope and the y-intercept of the equation?

Zielflug [23.3K]

Answer:

see explanation

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + b ( m is the slope and b the y- intercept )

Calculate m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (0, 3) and (x₂, y₂ ) = (4, 0) ← 2 points on the line

m = $\frac{0-3}{4-0}$ = $\frac{-3}{4}$ = - $\frac{3}{4}$

The y- intercept is where the line crosses the y- axis

The line crosses the y- axis at (0, 3 ) ⇒ b = 3

(b)

y = - $\frac{3}{4}$ x + 3 ← equation of line

8 0

2 years ago

Find the equation of a line that passes through the point (3,1) and has a gradient of -3. Leave your answer in the form y = m x

Bingel [31]

Answer:

$y = (-3)\, x + 10$ .

Step-by-step explanation:

The question requires that the equation should be in the slope-intercept form $y = m \, x + c$ . The $m$ and $c$ in this equation are constants. In particular:

$m\!$ would represent the slope of this line (also known as the gradient of this line,) whereas
$c$ would be the $y$ -intercept of this line.

The question states that the slope of this line is $(-3)$ . Therefore, $m = -3$ . Thus, the equation for this line should be in the form $y = (-3)\, x + c$ .

The value of constant $c$ could be found using the other piece of information: the point $(3,\, 1)$ is in this line. In other words, the solution $\text{$x = 3$ and $y = 1$}$ should satisfy the equation $y = (-3)\, x + c$ .

Substitute $\text{$x = 3$ and $y = 1$}$ into the equation $y = (-3)\, x + c$ and solve for $c$ :

$1 = (-3) \times 3 + c$ .

$1 = -9 + c$ .

$c = 10$ .

Hence, $y = (-3) \, x + 10$ would be the slope-intercept form of the equation of this line.

3 0

2 years ago

Holly bought a magazine subscription for a year. She paid $27. Holly wanted to find the price, p, of the subscription each month

sweet-ann [11.9K]

Answer:

2.25 should be the right answer

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2 years ago

Segment AB is tangent to c.find AB.

Lorico [155]

<h3>Answer: 38.1</h3>

====================================================

Explanation:

Segment AB is tangent to circle C. That tells us angle ABC is a 90 degree angle (the tangent is always perpendicular to the radius at the point of tangency). In other words, segments AB and BC are perpendicular. So triangle ABC is a right triangle.

The hypotenuse is AC = 22+22 = 44 units. One of the legs is BC = 22 units, due to the fact that radii of the same circle are the same length.

We then use the pythagorean theorem to find the missing leg length.

(AB)^2 + (BC)^2 = (AC)^2

(AB)^2 + (22)^2 = (44)^2

(AB)^2 + 484 = 1936

(AB)^2 = 1936 - 484

(AB)^2 = 1452

AB = sqrt(1452)

AB = 38.105118 which is approximate

AB = 38.1 after rounding to the nearest tenth

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3 years ago