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prisoha [69]
2 years ago
11

Is 0.8-3 equal to -2.2

Mathematics
1 answer:
Marysya12 [62]2 years ago
8 0

Answer:

Yes, they are equal.

Step-by-step explanation:

-3.0 + 0.8 = -2.2

<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em>

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How to write a domain
Gre4nikov [31]
The domain are all valid values for x (the independent variable) that can be used in an equation.

We have to look at any potential values of x which won't work. Easily put: in algebra, just look for values of x which cause either division by zero, or the square root of negative numbers.

A couple of examples: 
y=2x+4
You can insert any negative or positive value, or zero, for x and get a valid equation. Therefore the domain is the set of all real numbers. Answers are usually written as:
x: {R}, or simply 'all real numbers'.

what about y=2/(x-1)
In this equation, x appears in the denominator. If x-1=0, then division by zero would occur. 
Solve: x-1≠0
x≠1
In set notation:
x: (-∞,1)∪(1,∞)
Parentheses are next to the 1, as the domain comes up to 1, but does not include 1. 
Read left to right, the domain is "negative infinity to 1, exclusive, in union with 1 to positive infinity"
7 0
3 years ago
HELP AHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
diamong [38]

Answer:

3x+12y+4 -- is the simplified version, variables would be x and y

5 0
3 years ago
PLEASE HELP ME!!!!!! CLICK ON THIS PLEASE
Serhud [2]

Answer:

a) ok, heres what u graph, and ur ordered pairs

graph the following points:

(0,0) (1,5) (2,10) (3,15) (4,20) (5,25) (6,30) (7,35), and so on

b) One of the ordered pairs I can use is (1,5). This is beacuse the ordered pair explains that for every video game (x), 5 will be the cost (y).

7 0
3 years ago
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Anna007 [38]

Answer:

the answer is A

Step-by-step explanation:

8 0
3 years ago
Find the measure of angle A (please help!!!)
mel-nik [20]

Answer: 41 degrees

Step-by-step explanation:

so, we know that a triangle is 180 degrees. since we know that one angle is 80 degrees, we can subtract that from the equation. now, we are trying to find what X is so that we can find the angle. here is how i did it:

i rewrote it and removed the parentheses.

4x + 1 + 4x + 19 = 100

then, i collected like terms and calculated it.

8x + 20 = 100

then, i moved the constant to the right.

8x = 100 - 20

then, i simply calculated it.

8x = 10

solution: x = 10

so, we just insert X into the angle for A. that gets us 4(10) + 1 = angle A

40 + 1 = angle A, hence angle A = 41 degrees.

7 0
2 years ago
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