All categories

2 years ago

Hola me pueden ayudar por favor es de matemáticas

Mathematics

2 answers:

strojnjashka [21]2 years ago

8 0

Answer:

Vea a continuación.

Step-by-step explanation:

4*(-5) = -20
2*(-9)=-18
-1*(-2)=2.
-3*(-2)=6.
6*(-7)=-42
4*(-9)=-36
-6*(-2)=12
-10*(-5)=50.

Espero que esto ayude.

Volgvan2 years ago

4 0

Answer:

1. -20

2. -18

3. 3

4. 6

5. 41

6. -36

7. 12

8. 50

Step-by-step explanation:

4 *(-5) = -20

2 * (-9) = -18

-1 * (-2) = 2.

-3 * (-2) = 6.

6 * (-7) = -42

4 * (-9) = -36

-6 * (-2) = 12

-10 * (-5) = 50.

Espero que esto ayude. Que tenga un lindo día

You might be interested in

What is 4-2x+8+5x simplified

sveta [45]

Answer: it is 3 • (x + 4)

Step-by-step explanation: We move all terms to the left:

4-2x+8-(+5x)=0

We add all the numbers together, and all the variables

-2x-(+5x)+12=0

We get rid of parentheses

-2x-5x+12=0

We add all the numbers together, and all the variables

-7x+12=0

We move all terms containing x to the left, all other terms to the right

-7x=-12

x=-12/-7

x=1+5/7We move all terms to the left:

4-2x+8-(+5x)=0

We add all the numbers together, and all the variables

-2x-(+5x)+12=0

We get rid of parentheses

-2x-5x+12=0

We add all the numbers together, and all the variables

-7x+12=0

We move all terms containing x to the left, all other terms to the right

-7x=-12

x=-12/-7

x=1+5/7

6 0

2 years ago

Read 2 more answers

In a class of 25 students, 20 have a brother and 8 have a sister. There are 3 students

kaheart [24]

Answer: 6/8 or 3/4 or 0.75

Step-by-step explanation:

6 0

3 years ago

What is the 25% discount of $120 dollars?

Varvara68 [4.7K]

25% discount of $120
=100*0.25
=$25

3 0

3 years ago

The scores of the first two football games were 28 and

butalik [34]

Answer:

35+28=63

Step-by-step explanation:

hope this helps

4 0

3 years ago

Find all points on the x-axis that are 14 units from the point (4, -7).

BaLLatris [955]

Answer:

The points are: (16.12,0),(-8.12,0).

Step-by-step explanation:

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

Distance between two points:

Suppose we have two points, $(x_1,y_1)$ and $(x_2,y_2)$ . The distance between them is given by:

$D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Find all points on the x-axis that are 14 units from the point (4, -7).

Being on the x-axis mean that they have y-coordinate equal to 0, so the point is (x,0).

The distance is 14. So

$\sqrt{(x-4)^2+(0-(-7))^2} = 14$

$\sqrt{x^2 - 8x + 16 + 49} = 14$

$\sqrt{x^2 - 8x + 65} = 14$

$(\sqrt{x^2 - 8x + 65})^2 = 14^2$

$x^2 - 8x + 65 - 196 = 0$

$x^2 - 8x - 131 = 0$

So $a = 1, b = -8, c = -131$

$\bigtriangleup = (-8)^{2} - 4(1)(-131) = 588$

$x_{1} = \frac{-(-8) + \sqrt{588}}{2} = 16.12$

$x_{1} = \frac{-(-8) - \sqrt{588}}{2} = -8.12$

The points are: (16.12,0),(-8.12,0).

4 0

2 years ago