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navik [9.2K]
3 years ago
9

**Marking Brainliest** Which of the following are point-slope equations of the line going through (-4, 6) and (1, 2)? Check all

that apply.​

Mathematics
2 answers:
umka21 [38]3 years ago
8 0

Answer:

Options A and D

Step-by-step explanation:

Point Slope is:

y-y_1=m(x-x_1)\\\rightarrow 'm' - Slope\\\rightarrow (x_1,y_1) - Coordinate

We need to find the equation for the line that passes through (-4, 6) and (1, 2).

We are only given the two points, so we need to use them to find the slope.

m=\frac{y_2-y_1}{x_2-x_1}=\frac{2-6}{1+4}=\frac{-4}{5}  =-\frac{4}{5}

The slope is -4/5. There are more than one option, as they use the same slope but the two different points.

With (-4,6) as (x1,y1):

y-6=-\frac{4}{5}(x+4)

With (1,2) as (x1,y1):

y-2=-\frac{4}{5}(x-1)

Options A and D should be the correct answers.

<em>Brainliest Appreciated. </em>

Katena32 [7]3 years ago
4 0

Answer:

A C D E are correct choices

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Leona [35]
The answer would be 20
5 0
3 years ago
In circle O, RT and SU are diameters.
nataly862011 [7]

In circle O, RT and SU are diameters. mArc R V = mArc V U = 64°. Thus, option C is correct.

Given that:

mArc R V = mArc V U,

Angle S O R = 13 x degrees

Angle T O U = 15 x - 8 degrees

<h3>How to calculate the angle TOU ?</h3>

∠SOR = ∠TOU  (Vertically opposite angles are equal).

Therefore:

13 x = 15x - 8

Subtracting 13x from both sides

13x - 13x = 15x - 8 - 13x

0 = 15x - 13x - 8

2x - 8 = 0

Adding 8 to both sides:

2x - 8 + 8 = 0 + 8

2x = 8

2x/2 = 8/2  

x = 4

∠SOR = 13x

= 13(4)

= 52°

∠TOU = 15x - 8

= 15(4) - 8

= 60 - 8

= 52°

Let a = mArc R V = mArc V U

Therefore:

mArc R V + mArc V U + ∠TOU = 180 (sum of angles on a straight line)

Substituting:

a + a + 52 = 180

2a = 180-52

2a = 128

a = 128/2

a= 64°

mArc R V = mArc V U = 64°

In circle O, RT and SU are diameters. mArc R V = mArc V U = 64°. Thus, option C is correct.

Learn more about angles here:

brainly.com/question/2882938

#SPJ1

6 0
1 year ago
7 qt. of a 27% saline solution was mixed
mamaluj [8]

Answer:

24% saline

Step-by-step explanation:

Find how much saline is in both solutions:

7(0.27)

= 1.89

3(0.17)

= 0.51

Add this together:

1.89 + 0.51

= 2.4

Since there are 10 quarts in total, the concentration of the mixture can be found by dividing 2.4 by 10:

2.4/10

= 0.24

So, the concentration of the mixture is 24% saline

4 0
3 years ago
Given that f(x) = x² + 3x 28 and g(x) = x + 7, find f(x) + g(x) and
ozzi

Answer:

f(x) + g(x) = x^2 + 4x + 35

Step-by-step explanation:

Add like terms from f(x) and g(x):

f(x) + g(x) = x^2 + 3x + 28 + x + 7, or

f(x) + g(x) = x^2 + 4x + 35

7 0
2 years ago
The school concert raised $1360 from the sale of 400 tickets. If adult tickets cost $5 and student tickets $3, how many student
Sergeeva-Olga [200]
x-how\ many\ student\ tickets\ were\ sold\\ \\3\cdot x+5\cdot (400-x)=1360\\ \\3x+2000-5x=1360\\ \\-2x=-640\ \ \ \Rightarrow\ \ \ \ x=320\\ \\Ans.\ 320\ tickets\ for\ students
6 0
3 years ago
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