Answer:
by the Pythagoras theorem ....
which is :
(NO)^2 + (OM)^2 = (NM)^2
Answer:
3x²+13x-30
Step-by-step explanation:
3x×x =3x²
3x×6= 18x
-5×x = -5x
-5×6=-30
Connect them together to form:
3x²+13x-30
(I got the 13x by doing 18x-5x)
Answer:
Option A
Step-by-step explanation:
Given that in a study of the relationship between geographical mobility (number of times a person has changed residences) and number of friends, Pearson's r^2 is reported as .40.
r square, being the coefficient of determination explains the variablity of one variable due to the variability of the other. Here Mobility explains 40% variation in the number of friends is right answer.
Option B is wrong because r = ±6324, so cannot say positive or negative.
Similarly option c is wrong because we are unsure whether negative correlation. Option d is wrong since 16% is not right .
Answer:
x+9
Step-by-step explanation:
the perimeter of any polygon is the sum of all the sides
<span>I would contact your instructor, because I think there may be a typo in the original problem. I worked it out and got x = -4 </span>The steps go like this:
1. Distribute the 3 to each of 1/3x and 1. This gives you <span>x + 3 + 4</span> on the left side. Simplify that to x + 7.
2. Distribute the -4 to each of x and 3. This gives you -1 - 4x - 12 on the right side. Simplify that to -13 - 4x. Now you have <span>x + 7 = -13 - 4x.</span>
3. Subtract 7 from both sides.
4. Add 4x to both sides. Now you have 5x = -20 (This is the step Antwon gets to)
5. Divide by 5. You get <span>x = -4
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