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laiz [17]
3 years ago
12

7(3+5)= ___+___ 15-10=___ (3-2) (20 points)

Mathematics
2 answers:
stich3 [128]3 years ago
6 0

Answer:

7(3+5)= 7×3+7×5=21+35=56

15-10=5(3-2)=5×1=5

Reil [10]3 years ago
4 0

Answer:

7(3) + 7(5) = 21 35

5

Step-by-step explanation:

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In triangle FGH, is an angle bisector of and perpendicular to . In triangle F G H, angle F G H is cut by perpendicular bisector
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Answer:

x = 8

Step-by-step explanation:

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Solve for x. x - 7 = 25
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jill lives 3 1/2 from school then a car broke down 2/3 the way there how much more does jill hve to walk
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Find the dimensions of a rectangle (in m) with area 1,000 m2 whose perimeter is as small as possible. (Enter the dimensions as a
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The perimeter of the rectangle is the sum of its dimensions

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\mathbf{A = 1000}

Let the dimension be x and y.

So, we have:

\mathbf{A = xy = 1000}

Make x the subject

\mathbf{x = \frac{1000}{y}}

The perimeter is calculated as:

\mathbf{P = 2(x + y)}

Substitute \mathbf{x = \frac{1000}{y}}

\mathbf{P = 2(\frac{1000}{y} + y)}

Expand

\mathbf{P = \frac{2000}{y} + 2y}

Differentiate

\mathbf{P' = -\frac{2000}{y^2} + 2}

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Rewrite as:

\mathbf{ -\frac{2000}{y^2}  = -2}

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Take square roots of both sides

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Hence, the dimensions that minimize the perimeter are \mathbf{10\sqrt{10 },10\sqrt{10 }}

Read more about perimeters at:

brainly.com/question/6465134

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