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uranmaximum [27]
3 years ago
9

Please help with all three .

Mathematics
2 answers:
Neko [114]3 years ago
7 0
A) Negative. A is now a negative # (the - sign explains) a negative - a nagative will be positive

B) Positive. Two negatives make a positive.

C) Negative. A Negative # decreased is still a negative number, just more negative!!!

HOPE THIS HELPS :D
Romashka-Z-Leto [24]3 years ago
4 0
Ok lets sepose some values for a and b
a=3>0
b=-2<0

ok now
a. -a+b=-3-2=-5<0 negative

b. a-b=3-(-2)=5>0 positive

c. b-a=-2-3=-5<0 negative
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Where do the equations y=2x and y=<img src="https://tex.z-dn.net/?f=%20x%5E%7B2%7D%20" id="TexFormula1" title=" x^{2} " alt=" x^
never [62]
Set 2x=x²-3 to each other.
Subtract 2x from both sides and get the following

x²-3-2x

Rearranging the formula to make factoring easier, we get
x²-2x-3

Factor and you should get the following:
(x-3)(x+1)

set both equal to 0 and solve for x.

x-3=0⇒x=3
x+1=0⇒x=-1

Now plug both of these values back into one of your original equations to get your y-values. It does not matter which equation you plug your xs back into due to the fact they intersect at the same x, and thus will also intersect at the same y.

For times sake,
y=2x
plug in x=3 and get y=6
plug in x=-1 and get y=-2

Ergo, the equations y=2x and y=x²-3 intersect at
(3,6) and (-1,-2)
8 0
3 years ago
9.) express the area of this triangle as a polynomial. (Remember A=1/2B H
schepotkina [342]
Plug in the values for b = 4ab^2c^7  and h = 3a^2b^5

A = \frac{1}{2} (4ab^2c^7)(3a^2b^5)
Simplify.... 
A = 6a^3b^7c^7
5 0
3 years ago
Read 2 more answers
❌what number would you have to add to both sides to complete the square?
Verdich [7]
Hello,

Let's to remember,

To the perfect square:

X^2 +12x = -6

We would have to add 6^2

Because,

X^2 + 2.(6X) = -6

As (x+k) = x^2 +2xk +k

And,

2xk = 2.6x

xk = 6x

K = 6

Then,

(X+k)^2 = x^2 + 2xk+k^2

= x^2+2.x.6+6^2

= x^2+6x+36

We would to add 36, and would stay:

X^2 + 6X = -6

x^2 +6x + 36 = -6 +36

X^2 +2.6x +6^2 = 30

(X+6)^2 = 30


Answer is the letter A)

5 0
4 years ago
In a football tournament, each team played exactly 19 games. Teams get three points for everyone and one point for every time. A
irinina [24]

We can actually deduce here that when the tournament ended, team Olympus have tied for 13, 10, 7, 4, 1 times.

<h3>What is inequality?</h3>

In Mathematics, inequality is used to express or show quantities that are less than, greater than, greater than or equal to,  less than or equal to.

The following can be seen in inequality expressions:

  • ≤
  • ≥
  • >
  • <
  • ≠

Looking at the question, we can see that each team plays exactly 19 games.

Every win (w) = 3

Every tie (t)= 1

Every loose = 0

But Olympus got a total of 28 points

Thus: 3w + t = 28 ---------(1)

Note that each team plays  19 games

Thus, T + W  ≤  19 --------------(2)

and T , W ≥ 0

Looking at equation (1) and (2)

=> 2W  ≥  9

=> W ≥ 4.5  

( match can be won in integers only )

=> W  ≥  5  

W - 5, 6, 7, 8, 9    

T - 13, 10, 7, 4, 1  

Loose - 1, 3, 5, 7, 9

Thus, team Olympus have tied for 13, 10, 7, 4, 1 times.

Learn more about inequality on brainly.com/question/27771009

#SPJ1

7 0
2 years ago
Factor completely x2 − 10x + 25. (2 points)
Arada [10]

Answer:

(x - 5)(x - 5)

Step-by-step explanation:

Given the expression

x^2 - 10x + 25

Look for the factors of x^2 and 25.

The factors are x and 5.

Therefore,

(x -5) (x-5)

When you distribute , you have

X x X - X x 5 - 5 x X - 5 x -5

x^2 -5x - 5x +25

x^2 - 10x + 25

4 0
4 years ago
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