Answer:
-40 °F = -40 °C
Step-by-step explanation:
(1) F = 1.8 C + 32
If the Fahrenheit and Celsius temperatures are the same, then
(2) F = C Substitute (2) into (1)
C = 1.8C + 32 Subtract 1.8 C from each side
C – 1.8 C = 32 Combine like terms
-0.8C = 32 Divide each side by -0.8
C = -32/0.8
(3) C = -40 Substitute (3) into (1)
F = 1.8(-40) + 32
F = -72 + 32
F = -40
So, -40 °F = -40 °C
The thermometer below shows that -40 °F = -40 °C.
Answer:
B. 5.0 × 10⁻¹² moles per liter.
Step-by-step explanation:
In this exercise we have to calculate the pH levels associated with respective hydrogen ion concentration based on the following formula:
Where is the hydrogen ion concentration, measured in moles per liter.
a) 3.5 × 10⁻¹⁶ moles per liter:
The substance is above the upper bound for alkaline substances.
b) 5.0 × 10⁻¹² moles per liter:
The substance is alkaline.
c) 1.0 × 10⁻⁷ moles per liter:
The substance is not acid nor alkaline.
d) 1.1 × 10⁻⁴ moles per liter:
The substance is acid.
Thus, we concluded that correct answer is B.
Answer:
x = 13
Step-by-step explanation:
The probability of a flowering plant bearing flowers in January if it is a tulip is 68%.
<h3>How to find the Probability?</h3>
From the attached table, we see the respective probabilities of each flower bearing flowers in January as;
Tulip = 68%
Anemon = 81%
Manzanita = 77%
Peony = 70%
Fuschia Flowering currant = 74%
Total = 76%
Thus, it is clear that the probability of a flowering plant bearing flowers in January if it is a tulip is 68%.
Read more about Probability at; brainly.com/question/2612152
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