The coefficients are the constants -2/3, 3, and -2. You're supposed to multiply these together to get one term with one numerical constant which is the coefficient for the whole expression.
This is just a bunch of multiplications, (-2/3)*x*3*y*(-2)*x, and so the commutative law applies, which says that you can rearrange a multiplication any way you want. So put the numbers together, and the x's together and the y's together.
( (-2/3)*3*(-2) ) * (x^3 * x) * y
I'm also using the associative law, which says that I can put those parentheses in and multiply those groups of things together first. I'll bet you never thought "commutative law" and "associative law" were things that anybody actually used.
To simplify, multiply those things in the parentheses. x^3 * x is x^4. The product of those constants (-2/3), 3 and -2 is one number which is the coefficient. Source(s): Randy P <span> · 8 years ago </span>
Let x = 78.3
y = 87.2
σₓ = 5.6 and σ₍y₎ = 6.3
number of pieces n = 50
z = z-score value =1.96 in this case
<span> A 100(1-α)%
confidence interval for the difference in large sample means is:
(x – y) ± z x </span>√( σₓ² / n+ σ₍y₎²<span>/n)
by putting the values,
=(78.3-87.2) </span>± 1.96 x √(5.6² /50 + 6.3² /50)<span>
</span><span>= -8.9 ± 2.34
</span><span>= [-11.24, -6.56]</span>
Answer:
25
Step-by-step explanation:
not sure but i think the answer is 25, because all three sides must add up 180 degrees. so 60 + 95= 155
180
-155
=25 degrees
Answer:
Step-by-step explanation:
2x + 4x + 180
We have to do combine like terms.
2x and 4x are like terms, so add 2x to 4x. Which gives you 6x. Now you have the expres 6x + 180. You can’t find the variable for this expression, its unsolvable. If you meant, “2x + 4x = 180” Then yes, it would be solvable.
All you would have to do Is, 2x + 4x which gives you 6x, and now divide both side by 6. 6x divided by 6, the two 6 would cancel out, and 180 divide by 6, leaving you with 30. So x should equal to 30.
Answer:
False
Step-by-step explanation:
To form a triangle, the sum of any two sides must be LARGER than the length of the third side.
This question says the sum of two sides are equal to the length of the third side. This wouldn't form a triangle.