Answer:
Podemos hacer la conversión entre [\text{H}^+][H
+
]open bracket, start text, H, end text, start superscript, plus, end superscript, close bracket y \text{pH}pHstart text, p, H, end text mediante las siguientes ecuaciones:
\begin{aligned}\text{pH}&=-\log[\text{H}^+]\\ \\ [\text H^+]&=10^{-\text{pH}}\end{aligned}
pH
[H
+
]
=−log[H
+
]
=10
−pH
Answer: 0.3061.
Step-by-step explanation:
Given : The temperature reading from a thermocouple placed in a constant-temperature medium is normally distributed with mean , the actual temperature of the medium, and standard deviation .
Let X be the random variable that represents the reading of the thermometer.
Confidence level :
We know that the z-value for 95% confidence interval is 1.96.
Then, we have
But all readings are within 0.6° of .
So,
Hence, the required standard deviation will be
158+ 148+ 32 + x = 360
x= 22
<u>Answer:</u>
- There are 9 raspberries in the bowl.
<u>Step-by-step explanation:</u>
<u>We know that:</u>
- 1/3 x bowl = Raspberries
- 27 = bowl
<u>Let's substitute the value given into the equation.</u>
<u>Work:</u>
- 1/3 x bowl = Raspberries
- => 1/3 x 27 = Raspberries
- => 1/3 x 3 x 9 = Raspberries
- => 1 x 9 = Raspberries
- => 9 = Raspberries
Hence, <u>there are 9 raspberries in the bowl.</u>
Hoped this helped.
A) x + y = 24
B) x^2 + y^2 = 306
A) x = 24 -y
Then substituting this into B)
(24 - y)^2 +y^2 = 306
576 -48y +y^2 + y^2 = 306
2 y^2 -48y + 270 = 0
x1 = 15
x2 = 9