Evaluating an Expression

Mathematics

2 answers:

marysya [2.9K]3 years ago

6 0

Answer:

Use the distributive property and expand 28, then distribute the 4 to 20 and the 4 to 8. Then you have 18 + 80 + 32. Use commutative property to reverse the order of 32 and 80 so that 18 and 32 are friendly numbers to add.

Step-by-step explanation:

Anna35 [415]3 years ago

5 0

Answer:

130

Step-by-step explanation:

18+(4x28)

=18+112

=130

Remember PEMDAS!

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In J, K is the midpoint. The coordinates of ) are (2, 2), and the coordinates of Kare (10, 11). What are the coordinates of L?

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Answer:

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Step-by-step explanation:

In JL, K is the midpoint. The coordinates of J are (2, 2), and the

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Solution:

If O(x, y) is the midpoint between two points A( $x_1,y_1$ ) and B( $x_2,y_2$ ). The equation to determine the location of O is given by:

$x=\frac{x_1+x_2}{2} \\\\y=\frac{y_1+y_2}{2}$

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$10=\frac{2+x_2}{2} \\\\20=2+x_2\\\\x_2=18$