Answer:
145
step by step explanation:
perimeter definition:
perimeter definition:the continuous line forming the boundary of a closed geometrical figure.
add up the length of the sides:
80+20+45=145
Answer:
75
Step-by-step explanation:
So we have:
Take the derivative of the function. Use the power rule, which states that:
Therefore:
![\frac{d}{dx}[f(x)]=\frac{d}{dx}[x^3]](https://tex.z-dn.net/?f=%5Cfrac%7Bd%7D%7Bdx%7D%5Bf%28x%29%5D%3D%5Cfrac%7Bd%7D%7Bdx%7D%5Bx%5E3%5D)
Use power rule:
Now, substitute in -5:
Square and multiply:
So our answer is 75.
This means that the slope of the line tangent to the point (-5,-125) on the graph x^3 is 75.
And we're done!
If you’re asking for just the number of pounds then the answer is
200-33= 167 pounds
If you’re asking for a percentage of decrease it will be
200 - 33 = 177
_______ ____ = 0.885 x 100 will equal to 88.5% decrease.
200 200
Answer:
8 ejercicios
Step-by-step explanation:
De acuerdo a la información dada, puedes plantear las siguientes ecuaciones:
x+y= 45 (1)
7x-1y= 19 (2)
x= ejercicios que resolvió bien
y= ejercicios que resolvió mal
Primero, puedes despejar x en (1):
x= 45-y (3)
Segundo, debes reemplazar (3) en (2):
7(45-y)-1y=19
315-7y-1y= 19
315-8y= 19
315-19= 8y
296= 8y
y= 296/8
y= 37
Tercero, debes reemplazar el valor de y en (3) para encontrar x:
x= 45-37
x= 8
De acuerdo a esto, la respuesta es que el hijo ha resuelto bien 8 ejercicios.
