X represents the number of sodas
y represents the number of hot dogs
142 = x + y
x = 38 + y
Substitute x in the first equation
142 = 38 + y +y
142 - 38 = 2y
104/2 = 2y/2
y =52
x = 38 + 52
x = 90
La pregunta requiere que calculemos la diferencia entre la temperatura final e inicial del agua.
Responder:
4 ° C
Explicación paso a paso:
Dado que:
Temperatura inicial del agua = 7 ° C
La temperatura del agua después de 2 horas = 3 ° C
La diferencia de temperatura del agua;
Temperatura inicial - temperatura final
7 ° c - 3 ° c = 4 ° c
La diferencia de temperatura del agua es de 4 ° C
<h2>6.</h2><h3>Given</h3>
<h3>Find</h3>
- The side length of a regular pentagon whose side lengths in inches are represented by these values
<h3>Solution</h3>
Add 27 to get
... 5x = 2x + 21
... 3x = 21 . . . . . . . subtract 2x
... x = 7 . . . . . . . . . divide by 3
Then we can find the expression values to be
... 5x -27 = 2x -6 = 5·7 -27 = 2·7 -6 = 8
The side of the pentagon is 8 inches.
<h2>8.</h2><h3>Given</h3>
- a rectangle's width is 17 inches
- that rectangle's perimeter is 102 inches
<h3>Find</h3>
- the length of the rectangle
<h3>Solution</h3>
Where P, L, and W represent the perimeter, length, and width of a rectangle, respectively, the relation between them is ...
.... P = 2(L+W)
We can divide by 2 and subtract W to find L
... P/2 = L +W
... P/2 -W = L
And we can fill in the given values for perimeter and width ...
... 102/2 -17 = L = 34
The length of the rectangle is 34 inches.
90 x 0.9 (90%) = 81 students
This means 81 students are enrolled in health.
Hope this helps :)