In this equation we can see that there is only one unknown factor and that is x. So one equation is enough. If there were two unknown factors, then two equations would have been required to find them. Now coming back to the equation
6/16 = 9/x
6 * x = 9 * 16
6x = 144
x = 144/6
= 24
This is the only way to simplify the equation and get the
desired result and that is finding the value of x.
Answer:
220 Yards per minute
Step-by-step explanation:
15miles/2hours
**To show mph**
7.5miles/1hour ; Now you want to convert the miles into yards and the hours into minutes.
7.5*1,760/60minutes
13200/60 minutes ; now divide to show yards per minute.
220ypm
Answer:
y = 3x -7
Step-by-step explanation:
If you use the y = mx + b formula for a line, you know m = 3 because the question says the line is parallel so it must have same slope. In this formula, b is the y intercept and it's already given as -7. Therefore, y = 3x -7.
Resposta:
Primer rectangle:
Amplada = 11
Longitud = 14
Segon rectangle:
Amplada = 12
Longitud = 15
Tercer rectangle:
Amplada = 13
Longitud = 16
Explicació pas a pas:
Donat que:
Primer rectangle:
Amplada = x
Longitud = x + 3
2n rectangle:
Augment de la dimensió d'1 cm respecte al primer rectangle;
Amplada = x + 1
Longitud = x + 4
3r rectangle:
Augment de la dimensió de 2 cm respecte al primer rectangle;
Amplada = x + 2
Longitud = x + 5
Suma dels tres perímetres del rectangle:
Perímetre d'un rectangle: 2 (l + O)
Primer rectangle:
2 (x + x + 3) = 2 (2x + 3) = 4x + 6
2n:
2 (x + 1 + x + 4) = 2 (2x + 5) = 4x + 10
3r:
2 (x + 2 + x + 5) = 2 (2x + 7) = 4x + 14
Suma de perímetres = 162
(4x + 6 + 4x + 10 + 4x + 14) = 162
12x + 30 = 162
12x = 162 - 30
12x = 130
x = 11
Per tant,
Primer rectangle:
Amplada = 11
Longitud = 11 + 3 = 14
2n rectangle:
Amplada = 11 + 1 = 12
Longitud = 11 + 4 = 15
3r rectangle:
Amplada = 11 + 2 = 13
Longitud = 11 + 5 = 16
