<span>When the temperature of the air is 50°C, the velocity of a sound wave traveling through the air is approximately Answer</span>: 361 m/s
Answer:
30
Step-by-step explanation:
2/3 = x/18
2*18 = 3x
36 = 3x
x=12
so there are 12 boys
12+18=30
Answer:
The average temperatures were:
- <u>New York City: 63</u>
- <u>San Francisco: 64</u>
Step-by-step explanation:
Remember that, the average is obtained in the form below:
- Average = The sum of all the values / the number of values.
In this case, the number of values is 12 because are the number of months in the year. The sum of values is shown below for each case:
- <u>Average temperature in New York City = (39 + 42 + 50 + 61 + 71 + 81 + 85 + 84 + 76 + 65 + 55 + 47) / 12 = 63.
</u>
- <u>Average temperature in San Francisco = (57 + 60 + 62 + 63 + 64 + 67 + 67 + 68 + 70 + 69 + 63 + 58) / 12 = 64.</u>
I don't add units because the table doesn't specify if they are Celsius, Fahrenheit, or others.
A line perpendicular to y = (-2/3)x + 5 has a slope of (+3/2).
Use the slope-intercept formula here, and find b:
y = mx + b becomes 1 = (3/2)(8) + b. Multiplying all terms by 2, we get
2 = 24 + 2b. Thus, 2b = -22, b = -11, and the equation of the line is y = (3/2)x - 11.
