X is the amount of weeks.
Equation: 425+25x=875-15x
Solve for x:
25x+15x=875-425
40x=450
x=11.25
The answer is 11.25 weeks.
Responder:
$ 750
Explicación paso a paso:
Dado que :
Descuento en todos los artículos = 20%
Descuento adicional dado = 15%
Monto final pagado por la camisa = $ 510
Precio de la camiseta sin descuento:
Sea el precio inicial de la camisa = x
Primer descuento obtenido = 20%
Precio pagado después de un descuento adicional del 15%
Primer descuento:
(1 - 0,20) * x = 0,8x
Segundo descuento:
(1 - 0,15) * 0,8x = 510
0,85 * 0,8x = 510
0,68x = 510
x = 510 / 0,68
x = $ 750
Answer:
13
Step-by-step explanation:
5 12 and 13 are a known triangle proportion relation.
also, 5 squared plus 12 squared is 169.
13 squared is 169.
(I just used the Pythagorean formula)
Answer:
D: 13b^3 - 18b^2 - 7b + 12
Step-by-step explanation:
First expand the brackets by multiplying (10b^2+7b-3) by -1
Then rearrange the terms so you can see where you have to add them together.
Then simplify
As per the problem
The chemicals in my swimming pool use a ratio of 5 tablets of chlorine for every 14 days.
we have been asked to find
Which ratio shows the number of chlorine tablets needed for 42 days?
Since for each 14 days the number of tablets required is 5
So if you multiply the number of days by some number then, we will have to multiply the number of tablets required by the same number.
So When number of days![=14*3=42\\](https://tex.z-dn.net/?f=%20%3D14%2A3%3D42%5C%5C%20)
Then the number of tablets required for 42 days is ![=5*3=15\\](https://tex.z-dn.net/?f=%20%3D5%2A3%3D15%5C%5C%20)