3 years ago

Evaluate the following algebraic expression at x = 3, y = – 7 and simplify your answer.

Mathematics

1 answer:

4vir4ik [10]3 years ago

6 0

10 is the answe because I don’t know I just got 10 use demos

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Two fractions with a difference of 1/3 but with neither denominator equal to 3

Rudiy27

Answer:

3/9 and 6/9

Step-by-step explanation:

3/9 is simplified to 1/3

6/9 is simplified to 2/3

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3 years ago

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Find the permeter of a quadrilateral with vertices at C (2,4), D(1,1), E(5,0), and F(3,4). Round your answer to the nearest hund

denpristay [2]

Answer:

12.76

Step-by-step explanation:

This is much easier to solve if you draw it out on a graph. The perimeter is the sum of all the sides. I used the Pythagorean theorem to find the hypotenuse.

${a}^{2} + {b}^{2} = {c}^{2} \\ c = \sqrt{ {a}^{2} + {b}^{2} }$

$dc = \sqrt{ {3}^{2} + {1}^{2} } = \sqrt{10} \\ cf = 1 \\ fe = \sqrt{ {4}^{2} + {2}^{2} } = \sqrt{20} \\ de = \sqrt{ {1}^{2} + {4}^{2} } = \sqrt{17} \\ \sqrt{10} + 1 + \sqrt{20} + \sqrt{17} = 12.76$

7 0

3 years ago

Solve the system of equations and choose the correct ordered pair.

Ksivusya [100]

L.H.S is already equal, so just subtract 1st equation from second,
2y = 12
y = 6

Now, substitute it in 1st equation,
2(6) = 4x + 8
4x = 12 - 8
x = 4/4
x = 1

In short, Your Answer would be Option C) (1, 6)

Hope this helps!

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4 years ago

In a class there are

Inga [223]

Answer:

Step-by-step explanation:

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on saturday the librarian noted that a total of $85.00 was collected in library fines. Three times as much money was collected i

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$63.75 in the morning and 21.25 in the afternoon

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3 years ago