Responder:
14x - 40 = 310
Explicación paso a paso:
Dado que:
El baloncesto cuesta 10 € menos que un balón de fútbol
10 balones de fútbol y 4 de baloncesto cuestan 310 €
Para formar una ecuación:
Deje que el costo de:
Balón de fútbol = x
Costo del baloncesto = x - 10
Por lo tanto,
Costo de 10 balones de fútbol = 10 * x = 10x
Costo de 4 pelotas de baloncesto = 4 * (x - 10) = 4x - 40
Coste total :
Coste del balón de fútbol + coste del baloncesto = 310 €
10x + 4x - 40 = 310 €
14x - 40 = 310
14x = 310 + 40
14 veces = 350
x = 25 € = coste del balón de fútbol
Coste del baloncesto = 25 € - 10 € = 15 €
Answer:
2n + 9
Step-by-step explanation:
3n - n + 4 + 5 = 2n + 9
Answer:
The length of the ladder would be 32 feet.
Step-by-step explanation:
In order to find the missing value, we create a proportion. We can do this by making two fractions -- the numerator being the depicted length and the denominator being the actual length.
(1.5/4) = (12/x)
Since we don't know the actual length of the ladder, we put it in as x. Now we can cross multiply to solve.
(1.5/4) = (12/x)
1.5*x = 4*12
1.5x = 48
x = 32
4x - 12
You can get this by switch the f(x) and the x and then solving for the new f(x)
Answer:
B
Step-by-step explanation:
The scientific notation is symbol or the shorten way to rewrite the number that is too small or too large to write the full number. The scientific notation of a number has the form as the formula below:
<em>c x 10^n </em>
Based on this formula, it can be seen that answer C and D are not the correct answer.
Furthermore, in this formula, <em>c </em>can be any number ranging from 1 to 10 but not including 10 and <em>n </em>has to be an integer number.
So that in answer A, <em>c = 56 > 10 </em><em>is inappropriate.</em>
In answer B, <em>1< c = 5.6 < 10</em> and <em>n = 6 </em>
=> B is the correct answer