To determine who is accurate, consider the steps:
<span>6x - 2 = -4x + 2
Spencer:
</span>Add 4x to both sides:
6x - 2 + 4x = -4x + 2 + 4x
Resulting in 10x - 2 = 2
Jeremiah:
Subtract 6x on both sides:
6x - 2 - 6x = -4x + 2 - 6x
Resulting in -2 = -10x + 2
Both methods are valid, but Jeremiah’s approach will require multiplying by -1 or adding 10x later, which Spencer’s method avoids initially.
The standard form is 128,147.
Given that,
Julia completes a 20-mile bike ride in 1.2 hours.
The distance Julia covers is 20 miles and her time taken is 1.2 hours.
Therefore, Julia's speed =
= 16.67 mph
Katie finishes the same 20-mile ride in 1.6 hours.
Katie’s distance is 20 miles and her time is 1.6 hours.
Hence, Katie's speed =
= 12.5 mph
To determine how much faster Julia rides compared to Katie, subtract Katie’s speed from Julia’s speed.
Thus, 16.67 mph minus 12.5 mph equals 4.17 mph, approximately 4.2 mph.
Consequently, Julia cycles 4.2 mph faster than Katie.
¡Hola! Bienvenido a!
Vamos a sumar cuántas canicas tenemos en total.
12+11+17+5=45
Queremos hallar la probabilidad de elegir una canica que no sea azul. Observemos cuántas canicas no son azules.
12+11+5=28
Tendremos esta probabilidad sobre 48.
28/48
Al simplificar, obtenemos 7/12 o alrededor de 58.33%.
¡Espero que esto ayude!