The answer will be
8.11×10^-3, 435, 34×10^2, and 1.2×10^7. Hope it help!
Answer:
Step-by-step explanation:
The equation is:
√b+20 - √b = 5
The first step is we will add √b to both sides:
√b+20 -√b +√b = 5 +√b
√b+20 = 5+√b
Now take square at both sides:
(√b+20)^2 = (5+√b)^2
b+20 = 25+10√b+b
Now combine the like terms:
b+20-25-b=10√b
-5 = 10√b
Divide both the terms by 10
-5/10 = 10√b/10
-1/2=√b
Take square at both sides:
(-1/2)^2 = (√b)^2
1/4 = b
So in this type of question we add radical terms to both sides and square both sides twice....
Answer:
Gasto en postre= $75
Step-by-step explanation:
Dada la siguiente información:
Lusia tiene $500, decide gastar el 15% de esta cantidad en la compra de un postre para despues de la comida.
<u>Para calcular la cantidad a gastar en el postre, debemos usar la siguiente formula:</u>
Gasto en postre= presupuesto total*porcentaje para postre
Gasto en postre= 500*0.15
Gasto en postre= $75
Let x = the number
6x + 12 = 8x
Subtract 6x on both sides of equation.
12 = 2x
Divide both sides of equation by 2.
6 = x
The number is 6.
Well just add them up
2.47 + 8.99 + 6.47 = ???
The answer is $17.93
