Question

a scientist is measuring the measuring the temperature change in a chemical compound. the temperature dropped 11 per hr from the original temperature after 4 hrs the temperature was 90 find the compounds. original temperature​

Answer 1

`\large \boxed{134 \, ^(\circ)\text{C}}`

Step-by-step explanation:

1. Calculate the temperature drop

`\text{Temperature drop} = \text{4 h} * \frac{11 \,^(\circ)\text{C}}{\text{1 h}} = 44 \,^(\circ)\text{C}`

2. Calculate the original temperature

`\begin{array}{rcl}\text{Final Temperature} & = & \text{original temperature - temperature drop}\\90 ^(\circ)\text{C} & = & \text{original temperature - 44} \, ^(\circ)\text{C}\\\text{Original temperature}& = & \mathbf{134 \, ^(\circ)}\textbf{C}\\\end{array}\\\text{The original temperature was $\large \boxed{\mathbf{134 \, ^(\circ)}\textbf{C}}$}`