All categories

2 years ago

Can everyone give me an example how you add and subtract and multiply and divide negative numbers please

Mathematics

2 answers:

DaniilM [7]2 years ago

5 0

-1 + 2 = 1
-1 -1 = -2
-1 x -1 = 1
1 x -10 = -10

ryzh [129]2 years ago

4 0

(−3)⋅(−4)=12 i hope its right i think it is

You might be interested in

The ratio of the width to the length of a rectangle is 2:3, respectively. Answer each of the following. a By what percent would

Elina [12.6K]

Answer:

The percentage increase in Area of rectangle is 200%

Step-by-step explanation:

Given as :

The ratio of the width to the length of a rectangle is 2:3

Let The length of rectangle = 2 x

Let The width of rectangle = 3 x

∵ Area of rectangle = length × width

So, $A_1$ = 2 x × 3 x

Or, $A_1$ = 6 x²

Again

The increased length of rectangle = 2 x + 2 x = 4 x

The increase width of rectangle = 3 x + 50% of 3 x

I.e The increase width of rectangle = 3 x + 1.5 x = 4.5 x

∵ Increased Area of rectangle = increased length × increased width

Or, $A_2$ = 4 x × 4.5 x = 18 x²

So, The percentage increase in area = $\dfrac{A_2 - A_1}{A_1}$ × 100

Or, The percentage increase in area = $\frac{18 x^{2}-6x^{2}}{6x^{2}}$ × 100

Or , The percentage increase in area = $\dfrac{12}{6}$ × 100

∴ The percentage increase in area = 200

Hence, The percentage increase in Area of rectangle is 200% Answer

5 0

3 years ago

Triangle ABC has vertices at A(−3, 4), B(4, −2), C(8, 3). The triangle translates 2 units up and 1 unit right. Which rule repres

Nataly [62]

Answer:

The translation statement is given by:

$(x,y)\rightarrow (x+1,y+2)$

After the translation, the coordinates of vertex A is (-2,6).

Step-by-step explanation:

Given :

Vertices of a triangle ABC are:

A(−3, 4), B(4, −2), C(8, 3)

The triangle is translated 2 units up and 1 unit right.

To find the co-ordinates of point A after translation.

Translation rules.

For shift of $c$ units up, the translation is given as:

$(x,y)\rightarrow (x,y+c)$

For shift of $k$ units right, the translation is given as:

$(x,y)\rightarrow (x+k,y)$

So, it says the triangles is translated 2 units up and 1 unit right.

The translation statement is given by:

$(x,y)\rightarrow (x+1,y+2)$

So, co-ordinates of point A after translation is given by :

$(-3,4)\rightarrow (-3+1,4+2)=(-2,6)$

After the translation, the coordinates of vertex A is (-2,6).

4 0

3 years ago

In March for every 2 days it rained out of 5 days. A total of 30 days were calculated, How many days did it rain?

icang [17]

Answer:

37 days it rained for sure

4 0

3 years ago

What’s the answer??? (SOMEONE PLEASE HELP ME) WILL MARK BRAINLIEST!

MissTica

Your answer is B, "The function g because the graphs of f and g are symmetrical about the line y=x"

4 0

2 years ago

Given the definitions of f(x) and g(x) below, find the value of (fog)(-8).

Masja [62]

Answer:

$(f \circ g)(-8) = 16$

Step-by-step explanation:

The given function are;

f(x) = x² - 3·x - 12, and g(x) = -x - 12

$(f \circ g)(x) = f(g(x))$

Therefore;

$(f \circ g)(-8) = f(g(-8))$

g(-8) = -(-8) - 12 = 8 - 12 = -4

∴ f(g(-8)) = f(-4) = (-4)² - 3×(-4) - 12 = 16

Therefore;

$(f \circ g)(-8) = f(g(-8)) = 16$

3 0

3 years ago