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3 years ago

Will mark brainliest help please

Mathematics

1 answer:

Lelechka [254]3 years ago

8 0

The answer is the second option y= -2x + 11

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Standard form of the equation that goes through (1, 2) with a slope of 7, please!

Radda [10]

Answer:

7x - y = 5

Step-by-step explanation:

The equation of a line in standard form is

Ax + By = C ( A is a positive integer and B, C are integers )

Obtain the equation in point- slope form and rearrange into standard form.

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

Here m = 7 and (a, b) = (1, 2)

y - 2 = 7(x - 1) ← in point- slope form

y - 2 = 7x - 7 ( subtract y from both sides )

- 2 = 7x - y - 7 ( add 7 to both sides )

5 = 7x - y , that is

7x - y = 5 ← in standard form

7 0

3 years ago

Select the data points that need to be removed from this table for it to represent a linear function.

gogolik [260]

Step-by-step explanation: First, let's graph this down.

With all the points touching except (-2, -6) and (8, 18), it's safe to say that these are the coordinates that have to be removed. Also, just for an extra help, the linear line is 2x + 1 = y

5 0

3 years ago

What is the radius of a circle whose equation is (x + - 5)2 + (y - 3)2 = 42?

Yuki888 [10]

Answer:

Step-by-step explanation:

The equation of the form

$(x-a)^2+(y-b)^2 =r^2$

has radius r.

Now your equation is

$(x-5)^2+(y-3)^2=42$

Hence its radius is $\sqrt{42}$

3 0

3 years ago

Read 2 more answers

A parabola has a vertex at the origin. The equation of the directrix of the parabola is y = 3. What are the coordinates of its f

Yuliya22 [10]

Focus -
(0,-3)

let me know if explanation needed.

6 0

3 years ago

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Find the value of x.<br> please help me!!!!!!!!

Zanzabum

Answer:

x = 55° (nearest degree)

Step-by-step explanation:

Trig ratios:

$sin(\theta)=\dfrac{O}{H} \ \ \ cos(\theta)=\dfrac{A}{H} \ \ \ tan(\theta)=\dfrac{O}{A} \ \ \$

where $\theta$ is the angle, O is the side opposite the angle, A is the side adjacent to the angle, and H is the hypotenuse of a right triangle

Given:

$\theta=x$
A = 3.3
H = 5.7

$\implies cos(x)=\dfrac{3.3}{5.7}$

$\implies x=\arccos \dfrac{3.3}{5.7}=54.623459...$

⇒ x = 55° (nearest degree)

5 0

2 years ago

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