- Slope-Intercept Form: y = mx + b, with m = slope and b = y-intercept.
If two lines are perpendicular, then they will have slopes that are <u>negative reciprocals</u> to each other. An example of negative reciprocals are 2 and -1/2
<h2>6.</h2>
Now with line 2, I have to convert it to slope intercept form. Firstly, subtract 2x on both sides of the equation: 
Next, divide both sides by -5 and your slope-intercept form is 
Now since 2/5 is <em>not</em> the negative reciprocal of -2/5, <u>these lines are not perpendicular.</u>
<h2>7.</h2>
It's pretty much the same process; convert to slope-intercept and determine if negative reciprocal. This time I'll brush through them:
Now since 2 <em>is</em> the negative reciprocal of -1/2, <u>these lines are perpendicular.</u>
Answer is <span>A.
associative property
...................regrouped</span>
The answer would be 19.87
7.2*12*.23= 19.872
Because two is lower then 5 we could round to 19.87
Answer:
Step-by-step explanation:
X is mass which I s decrease. If you have 740 grams of element x and you add the function.per the rate day you will have a hundredth percent.
<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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