I think it’s d because that’s where the z would come from with the AEC right angle.
The value of the coefficient of the xy term when the expression is multiplied out and the like terms are collected is 2bc
<h3>Factoring expressions</h3>
Given the expression below;
( ax+ by ) ( cx + dy)
Expand to have:
<u>( ax+ by ) ( cx + dy) =</u> acx² + adxy + bcxy + bdy²
If ad=bc, the expression becomes;
( ax+ by ) ( cx + dy) = acx² + 2bcxy + bdy²
Substitute the value of ac and bd to have;
( ax+ by ) ( cx + dy)= 18x² + 2bcxy + 50y²
Hence the value of the coefficient of the xy term when the expression is multiplied out and the like terms are collected is 2bc
Learn more on factoring here: brainly.com/question/24734894
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Answer:
Equation: 2x + 1 = 9x - 13
There are two chairs in each row.
Step-by-step explanation:
Looking at the problem, we see that Hue can form two rows of chairs with 1 left over, or 9 rows if she gets 13 more. With that information we can create the equation 2x + 1 = 9x - 13. Now let's solve for x.
2x + 1 = 9x - 13
<em>What we can do first is subtract 9x from both sides. This is done so all of the variables are on one side. Thus that becomes...</em>
2x + 1 - 9x = -13
<em>Now, combine -9x and 2x to get -7x.</em>
-7x + 1 = -13
<em>Now subtract 1 from both sides. This is done so we solve for x directly.</em>
-7x = -13 - 1
<em>Subtract -1 from -13 to get -14.</em>
-7x = -14
<em>Now divide both sides by -7.</em>
x = -14/-7
<em>Divide -14 by -7 to get 2. Remember, dividing two negatives gives you a positive!</em>
x = 2
With that, the equation is solved. There are 2 chairs in each row.
The correct answer would be (-24). When multiplying with negative integers, negative times negative is positive, however, the final answer, in this case, is negative because you are then multiplying a positive and a negative:
(-2)(-3)=6
6(-4)=(-24)
I'm guessing Jamar's mistake was he multiplied all of them thinking his answer would be a positive integer: 24.
Answer:
84 cm³
Step-by-step explanation:
The volume of a pyramid is given by the formula ...
V = 1/3Bh
where B is the area of the base.
__
The base is shown as a right triangle with legs 8 cm and 7 cm. Its area is given by the triangle formula ...
A = 1/2bh
A = 1/2(8 cm)(7 cm) = 28 cm²
Then the volume of the triangular pyramid is ...
V = 1/3(28 cm²)(9 cm) = 84 cm³
