4 years ago

5.23y+3·(2.7−1.6y) simplify

Mathematics

1 answer:

vampirchik [111]4 years ago

5 0

Answer:

0.43y + 8.1

Step-by-step explanation:

5.23y + 8.1 - 4.8y

5.23y - 4.8y + 8.1

0.43y +8.1

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The sum of three consecutive integers is −387. Find the three integers.

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Step-by-step explanation:

x + x+1 + x+2 = - 387

3x + 3 = - 387

3x = - 387 - 3

x = - 390/3

x = - 130

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3 years ago

Find the perimeter of triangle ABC.

Harlamova29_29 [7]

By definition, the perimeter of the triangle is the sum of its sides.
We must then use the formula of distance between points:
$d = \sqrt{(x2-x1) ^ 2 + (y2-y1) ^ 2}$
We now look for the longitus for each of the sides:

For L1:
$L1 = \sqrt{(6-2)^2 + (6-2)^2}$
$L1 = \sqrt{32} 
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$L1 = 4\sqrt{2}$

For L2:
$L2 = \sqrt{(7-2)^2 + (-3-2)^2}$
$L2 = \sqrt{50}$
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For L3:
$L3 = \sqrt{(7-6)^2 + (-3-6)^2}$
$L3 = \sqrt{82}$

Then, the perimeter is given by:
P = L1 + L2 + L3
Substituting values we have:
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Answer:
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4 years ago

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Answer:

Step-by-step explanation:

7/8 ÷ 1/16 = 7/8 × 16/1

7/8 × 16/1 = 14

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3 years ago