Answer:
-2.5 (decimal) or -5/2 (fraction)
Step-by-step explanation:
I believe it’s b- it might not be correct I believe
Answer:
It's either 39.2 or 39.3 (a more accurate answer) because it depends on what you round by. since it's Delta Math, you should get 2 attempts.
Step-by-step explanation:
Since they are similar, they are proportional.
54/11=4.90909091 or 4.9
Multiply 11 by 4.90909091 and you get 54
Multiply 8 by 4.90909091 and you get 39.3
if you multiply by 4.9 you get 39.2
Answer:
y = -4
Step-by-step explanation:
y = 6 is line that is parallel to x-axis
So, the required is also parallel to x -axis
The equation of line parallel to x-axis , y = c, where c is y-intercept
y = - 4
<span>fo = 335 Hz</span>let fo = frequency heard
<span>f = actual frequency </span>
<span>v= speed of sound </span>
<span>vs = speed of source </span>
<span>For the first one, </span>
<span>fo = fv/(v - vs) </span>
<span>74.5 km/h = 20.69 m/s </span>
<span>vs = -20.69m/s since it is moving away from you </span>
<span>fo = (415Hz)(346m/s)/(346m/s - (-20.69m/s)) </span>
<span>fo = 392 Hz </span>
<span>For the second one, </span>
<span>fo = fv/(v - vs) </span>
<span>82.8 km/h = 23 m/s </span>
<span>vs = 23m/s </span>
<span>fo = (312Hz)(331m/s)/(331m/s - (23m/s))
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