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MrMuchimi
3 years ago
7

|-13|+|26|-|-18|+|-12|

Mathematics
2 answers:
s344n2d4d5 [400]3 years ago
5 0
Ah, let me help you on this one.

These weird lines (|) are actually indicators of absolute value.

All of the negative numbers will be transformed into non-negative ones.

Neat, huh?

13+26-18+12 equals to 33



P.S. If this answer helped you, please, make sure to say "Thanks" just below my answer. It will help me a lot.
castortr0y [4]3 years ago
3 0
33
The lines stand for absolute value. The expression would then look like:
13+26-18+12
39-18+12
21+12
33


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Isaac sold 58 of his baseball cards at a collectors show. If this represented 14.5% of his total collection, how many baseball c
Alenkasestr [34]

Answer:

400\ cards

Step-by-step explanation:

Let

x------> amount of baseball cards Isaac had before he sold

we know that

14.5\%=14.5/100=0.145

so

0.145x=58

Solve for x

x=58/0.145

x=400\ cards

4 0
3 years ago
Coefficient x^2 in the expansion of (2+x)^5
Monica [59]
Alright, expand the given equation:
(2+x) (2+x) (2+x) (2+x) (2+x)
Use FOIL method and distribution to solve
At the final answer, find the x^2 and the number that multiplies to it is the coefficient
I can't do the actually expansion for you, it would take a decently long time. You should be able to, its a good practice. Good luck!
7 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx-3%7D%7Bx%2B2%7D%20%3D%5Cfrac%7B1%7D%7B5%7D" id="TexFormula1" title="\frac{x-3}{x+2
Shkiper50 [21]

Answer:

x=17/4

Step-by-step explanation:

(x-3)/(x+2)=1/5

cross product

1(x+2)=5(x-3)

x+2=5x-15

5x-x-15=2

4x-15=2

4x=2+15

4x=17

x=17/4

3 0
3 years ago
¿por que en los mapas se respeta la misma escala? Ayudenme por favor esta es otra pregunta ¿qué pasaría si una parte del mapa se
7nadin3 [17]

Answer:

Ok, supón que conoces exactamente tu posición en un mapa, y también sabes a donde quieres ir.

Podes ver en ese mapa la distancia entre tu posición y el lugar al que quieres ir, ahora, si la escala del mapa es conocida (por ejemplo 1cm = 1km) y constante, entonces vos podes medir la cantidad de centímetros entre tu posición y tu destino, y multiplicar ese numero por la escala, de esta forma conociendo la distancia real entre tu posición y tu destino.

Ahora, si la escala no es constante, entonces es imposible saber exactamente la distancia entre nuestra posición y nuestro destino, entonces este mapa no sirve realmente para ubicarnos/guiarnos, entonces no funciona como un mapa.

En el caso de que una parte este en una escala y otra parte en otra, en la primera parte un centímetro en el mapa equivaldría a una distancia X en la realidad, y en la otra zona un centímetro en el mapa equivaldría a una distancia Y en la realidad.

Donde X es diferente de Y, ahora, cuando queremos calcular la distancia entre dos lugares tendríamos que saber exactamente en que lugar se da el cambio de escala (para saber si usamos X o Y). Lo que hace que leer este mapa sea bastante mas difícil que leer un mapa normal.

8 0
3 years ago
The medians of triangle XYZ intersect at Point P. If PY=12, what is VY?
AlekseyPX

Answer:

18

Step-by-step explanation:

PY = \frac{2}{3} YV

\frac{2}{3} YV = 12

VY = 18

3 0
3 years ago
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