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anzhelika [568]
3 years ago
12

PLEASE HELP!!!

Mathematics
1 answer:
qwelly [4]3 years ago
6 0

Answer:

496 cm²

Step-by-step explanation:

Area of polygon :

A = 1/2(p * a)

P = perimeter

a = apothem

Perimeter = 5s (pentagon)

s = side length = 18

P = 5 * 18 = 80 cm

a = 12.4

A = 1/2(80 * 12.4)

A = 1/2(992)

A = 496 cm²

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Evaluate the integral x^3 (x 4 −8)^44 dx by making the substitution u = x^4 - 8
Eduardwww [97]

Answer:

(x^4-8)^45 /180 +c

Step-by-step explanation:

If u=x^4-8, then du=(4x^3-0)dx or du=4x^3 dx by power and constant rule.

If du=4x^3 dx, then du/4=x^3 dx. I just divided both sides by 4.

Now we are ready to make substitutions into our integral.

Int(x^3 (x^4-8)^44 dx)

Int(((x^4-8)^44 x^3 dx)

Int(u^44 du/4)

1/4 Int(u^44 dul

1/4 × (u^45 / 45 )+c

Put back in terms of x:

1/4 × (x^4-8)^45/45 +c

We could multiply those fractions

(x^4-8)^45 /180 +c

5 0
3 years ago
Write an equation of a line through the given points (5,0);(7,6)
KATRIN_1 [288]
Y - y1 = m( x - x1); where m = (y2 - y1)/(x2 - x1);
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Finally: y = 3x - 15.
4 0
3 years ago
I still haven't finished this and it's due today. i really would appreciate some help .
Svetlanka [38]
A
x X x
= x^2

B
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4 0
3 years ago
Use the figure at the right to answer the following questions.
Lisa [10]

<h3><u>Answers:</u></h3>

1. Name all the line segments.

<u>Ans.</u><u> </u> PL, LA, AY, YS,

2. How many line segments were formed?

<u>Ans.</u><u> </u> 4 (four)

3. Name all rays

<u>Ans.</u><u> </u>AM, AN

4. How many rays were formed?

<u>Ans.</u> 2 (two)

5. Name the opposite rays :

<u>Ans.</u><u> </u>AM, AN

6. Is point A between MN ?

<u>Ans.</u><u> </u>Yes

7. Find the line segments and rays formed by 5 points.

<u>Ans.</u><u> </u>

  • Line segment = PL, LA, AY, YS,
  • Rays = AM, AN

<h3>Hope it helps you.</h3>
7 0
2 years ago
|c-10|=3 <br>absolute value
Norma-Jean [14]

The final solutions are C1=7, C2=14


6 0
3 years ago
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