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snow_tiger [21]
4 years ago
7

The difference of 13 and 5 times a number is 3.

Mathematics
2 answers:
lozanna [386]4 years ago
6 0
13-5x =3
-13 -13
—————-
-5x = -10
—————
-5 -5

x=2
Artemon [7]4 years ago
3 0

Answer:

2

Step-by-step explanation:

13-5x =3  

-13 -13  

-5x = -10  

-5 -5

x=2

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Melissa and brian are at the base of a moutain. Melissa hikes to a location 27 meters above sea.Level brian hikes to a location
AVprozaik [17]

Answer:

Integer that represents Melissa's location with respect to sea level: 27

Integer that represents Brian's location with respect to sea level: -21

Step-by-step explanation:

By definition, Integers can be negative, positive or zero.

Let be zero (0) the sea level.

According to the information provided in the exercise, you know that Melissa's location is at 27 meters above the sea level.

Therefore, you can conclude that the integer that represents her location with respect to sea level, is greater than zero (this means that it is positive).

Then, this is:

27

Brian's location is 21 meters below sea level​.

This indicates that the integer that represents her location with respect to sea level is less than zero (it is negative).

Therefore, this is:

-21

8 0
4 years ago
Read 2 more answers
Four different sets of objects contain 3, 5, 6, and 8 objects, respectively. How
Anna [14]

Answer:

D. 720

Step-by-step explanation:

3 x 5 x 6 x 8 = 720

7 0
4 years ago
Dado dos ángulos complementarios, uno mide (2x + 10) y el otro (x + 20),
rusak2 [61]

Answer:

El valor de <em>x</em> es igual a 20 o <em>x</em> = 20.

Step-by-step explanation:

Lo primero que se debe saber es que <em>dos ángulos complementarios suman un ángulo recto o 90º</em>.

Supongamos que el valor de un ángulo \\ \alpha y un ángulo \\ \beta valen:

\\ \alpha = 2x + 10 [1]

\\ \beta = x + 20 [2]

Como la suma de  \\ \alpha + \beta = 90 [3]

Entonces

\\ \alpha + \beta = (2x + 10) + (x + 20) = 90

Sumamos los factores comunes entre si:

\\ (2x + x) + (10 + 20) = 90

Para la primera expresión debemos recordar que se suman sólo los coeficientes. Así:

\\ (2 + 1)x + (10 + 20) = 90

\\ 3x + 30 = 90

Para despejar la incógnita <em>x</em>, debemos tener en cuenta que <em>una igualdad no se altera si se suma, se resta, se multiplica o divide un mismo valor a cada lado de ella</em>. Por esta razón, para despejar 3x, lo primero que podemos hacer es sumar -30 a cada lado de la expresión (lo que es igual a restar 30 a cada lado de la misma). Así tenemos:

\\ 3x + 30 - 30 = 90 - 30

\\ 3x + 0 = 90 - 30

\\ 3x = 60

Ahora dividimos cada miembro de la igualdad entre 3 (o multiplicamos cada lado de la igualdad por \\ \frac{1}{3} ):

\\ \frac{3}{3}x = \frac{60}{3}

Como sabemos que:

\\ \frac{3}{3} = 1

Entonces:

\\ 1*x = \frac{60}{3}

\\ x = \frac{60}{3}

\\ x = 20

De esta manera, el valor de <em>x</em> es igual a 20 o x = 20.

Lo anterior lo podemos comprobar considerando las ecuaciones [1], [2] y [3]. Así tenemos que:

\\ \alpha = 2x + 10 [1]

Sustituimos x por el valor de 20:

\\ \alpha = 2*20 + 10 = 40 + 10 = 50

\\ \beta = x + 20 [2]

Hacemos lo mismo para [2]:

\\ \beta = 20 + 20

\\ \beta = 40

De esta manera:

\\ \alpha + \beta = 90 [3]

\\ 50 + 40 = 90

4 0
3 years ago
06.01 LC)
LUCKY_DIMON [66]
Graph D.

Graph D is the correct answer because it represents a POSITIVE and EXPONENTIAL (non-linear) relationship.
5 0
4 years ago
Nvm <br>I don't need help
Snowcat [4.5K]

Answer:

ok

Step-by-step explanation:

5 0
2 years ago
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