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iren [92.7K]
3 years ago
5

-7 + 5 = 19 Help PLS

Mathematics
2 answers:
Aloiza [94]3 years ago
7 0

Step-by-step explanation:

19 is the answer I'd don't know why it's so hard

Andrew [12]3 years ago
7 0

Answer:

<em><u>-7 + 5 = -2</u></em>

Step-by-step explanation:

I used calculator

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Long before iPhones that hold thousands of songs and play
Flauer [41]

Answer:

Do you mean an MP3 player?

Step-by-step explanation:

4 0
3 years ago
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
For #1-8, solve the equation for the indicated variable:<br> Solve for x:<br> 1.<br><br> 3x + 2 = 8
Karo-lina-s [1.5K]

Steps to solve:

3x + 2 = 8

~Subtract 2 to both sides

3x = 6

~Divide 3 to both sides

x = 2

Best of Luck!

5 0
3 years ago
The length of the base of a triangle is twice its height. If the area of the triangle is 64 square​ kilometers, find the height.
frez [133]
Area of a triangle = base x height / 2
64 = base x height / 2
(multiply 2 on both sides)
128 = base x height 
then if base= 16 and height = 8 then 16 x 8 = 128
thus the base is 16 which is twice the height:8
6 0
3 years ago
Write five names for -73
Deffense [45]
Negative 73
drop of 73
minus 73
below 73
taking away 73
6 0
3 years ago
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