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2 years ago

Do it right plss I need good grades

Mathematics

2 answers:

Alborosie2 years ago

6 0

Answer:its yhe one on the right

Step-by-step explanation:

Harman [31]2 years ago

6 0

Answer:

138 per 6 is the better deal

Step-by-step explan

$23 per g is the unit rate

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Point B has coordinates (1,2). The x-coordinate of point A is -8. The distance between point A and point B is 15 units. What

Xelga [282]

Answer:

The possible coordinates of point A are $A_{1} (x,y) = (-8, 14)$ and $A_{2} (x,y) = (-8, -10)$ , respectively.

Step-by-step explanation:

From Analytical Geometry, we have the Equation of the Distance of a Line Segment between two points:

$l_{AB} = \sqrt{(x_{B}-x_{A})^{2} + (y_{B}-y_{A})^{2}}$ (1)

Where:

$l_{AB}$ - Length of the line segment AB.

$x_{A}, x_{B}$ - x-coordinates of points A and B.

$y_{A}, y_{B}$ - y-coordinates of points A and B.

If we know that $l_{AB} = 15$ , $x_{A} = -8$ , $x_{B} = 1$ and $y_{B} = 2$ , then the possible coordinates of point A is:

$\sqrt{(1+8)^{2}+(2-y_{A})^{2}} = 15$

$81 + (2-y_{A})^{2} = 225$

$(2-y_{A})^{2} = 144$

$2-y_{A} = \pm 12$

There are two possible solutions:

1) $2-y_{A} = -12$

$y_{A} = 14$

2) $2 - y_{A} = 12$

$y_{A} = -10$

The possible coordinates of point A are $A_{1} (x,y) = (-8, 14)$ and $A_{2} (x,y) = (-8, -10)$ , respectively.

8 0

3 years ago

Is 3+5(9+2n)equal to48+5n

Rama09 [41]

Answer: No
There is no logical way to get ‘5n’

6 0

3 years ago

Do 2 and 3, please. show all your work

nignag [31]

The answer would be b and c

3 0

2 years ago

Read 2 more answers

fritz wrote a set of related facts for the array below.which equation is not intended in the set of related facts for this array

oksian1 [2.3K]

Do you have the equation choices?

7 0

3 years ago

The measures of an angle and its supplement differ by 40°. What are the measures of the angles? Hint: An angle and its supplemen

bogdanovich [222]

Let the two numbers be x and x + 40, then
x + x + 40 = 180
2x = 180 - 40 = 140
x = 140/2 = 70
Therefore, the measures of the two angles are 70° and 70 + 40 = 110°

3 0

3 years ago