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viktelen [127]
3 years ago
14

Tell me what -28 + (-80) equals please i need help

Mathematics
1 answer:
adoni [48]3 years ago
7 0
It’s -108. Hope this helps you out. Let me know if you need something else
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What is another solution of the equation<br><br> x + y = 7?
White raven [17]
X=3, y=4
x=-2, y=9
Set x equal to anything, then isolate y to get the other number.
5 0
3 years ago
What is the slope of the line that contains these points? xxx -4−4minus, 4 -3−3minus, 3 -2−2minus, 2 -1−1minus, 1 yyy 222 555 88
Charra [1.4K]

Given:

The table of values is

x        y

-4      2

-3      5

-2       8

-1       11

To find:

The slope of the line that contains these points.

Solution:

From the given table consider any two point.

Let the line passes through the points (-4,2) and (-3,5). So, the equation of the line is

y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)

y-2=\dfrac{5-2}{-3-(-4)}(x-(-4))

y-2=\dfrac{3}{-3+4}(x+4)

y-2=\dfrac{3}{1}(x+4)

Using distributive property, we get

y-2=3x+12

y=3x+12+2

y=3x+14

Therefore, the required equation of line is y=3x+14.

4 0
3 years ago
Assuming a soap bubble is a perfect sphere, what is the diameter of a bubble containing 500 cm of air, to the nearest tenth of a
Alex777 [14]

Answer:

9.8 cm

Step-by-step explanation:

Volume of a sphere, V = 4/3 πr³

V = 500cm³

π = 3.14

500 = 4/3 * 3.14 * r³

500 * 3 = 4 * 3.14 * r³

1500 = 12.56r³

r³ = 1500 / 12.56

r³ = 119.42675

r = (119.42675)^1/3

r = 4.9245574

Diameter = 2r

Diameter = 2 * 4.9245574

Diameter = 9.849

= 9.8cm

6 0
3 years ago
Helpppppp <br><br> Someone please tell me how to do it step-by-step and there’s 2 questions :(
azamat

Answer:

1. The angles of a triangle added up all together is 180. So, we can solve a as an equation!

36+57+a=180.

From this, we can figure out a:

a=87

2. The same goes for this one, just a bit different. We write our equation like this:

3x+90=180

we solve this:

3x=90

we divide both sides by 3 and get:

x=30

5 0
3 years ago
The diameter of circle A is<br><br> A. Segment RS<br> B. Segment CA<br> C. Segment CD
V125BC [204]
The diameter of circle A is <span>A. Segment RS.
A diameter is a segment, it should include center of a circle (A) and should have 2 points on the circle. </span>
4 0
3 years ago
Read 2 more answers
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