Answer:
Step-by-step explanation:
El área del rectángulo se halla a través de la siguiente fórmula: (The area of the rectangle is obtained by the following formula:)
Donde el área y 
se miden en centímetros cuadrados y centímetros, respectivamente. (Where area and are measured in square centimeters and centimeters, respectively)
Ahora, se reemplaza y se encuentra el valor numérico del área: (Now, is substituted and numerical value of area is finally determined:)
![A = [40\,cm - 2\cdot (4\,cm)]\cdot (4\,cm)](https://tex.z-dn.net/?f=A%20%3D%20%5B40%5C%2Ccm%20-%202%5Ccdot%20%284%5C%2Ccm%29%5D%5Ccdot%20%284%5C%2Ccm%29)
Answer:
y=10 ( number of acrobat)
Step-by-step explanation:
let x be the elephant and y the acrobat
elephant has 4 legs and acrobat 2
4x+2y=40
x+y=15 ⇒x=15-y
substitute for x in the equation:
4(15-y)+2y=40
60-4y+2y=40
-2y=40-60
y=-20/-2
y=10 ( number of acrobat)
number of elephant=15-10=5 elephants
Answer:
k - 3
Step-by-step explanation:
In this expression, only 8k and 7k can be subtracted. This is because they have the same variable, meaning they are "like terms".
8k - 7k - 3 = 1k - 3
