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4 years ago

I've been struggling a bit with Composite Figures. This is 2 ones I've really struggled with though so, could I have some help?

Mathematics

1 answer:

Natali5045456 [20]4 years ago

6 0

You are right with : Which shapes could a pentagon be decomposed into to find its area? Chose all that apply.
C. five triangles
D. one triangle and one trapezoid
And #2: Is (A) and (C)

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3/2 times 6/2 times 2

ladessa [460]

Answer:

Step-by-step explanation:

3/2x6/2=18/2 Simply that and it turns to 9.

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2 years ago

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Help guys, I’m sure it’s easy for y’all

Artist 52 [7]

Answer:

(x, y) -------- ( -x,-y)

Rule : Rotation center (0,0) , angle of rotation 180° or -180°

Step-by-step explanation:

The vertices of the object and image have coordinates at ;

D(-4,2), --------D'( 4,-2 ),

E (-1,3), --------E'( 1,-3 ),

F (-1,-3),--------F'(1,3),

G (-3,-4),------G'( 3,4 ),

You notice that after the rotation ;

( x, y )-------change to (-x,-y),

This rule is rotation center origin angle 180°

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3 years ago

Date : n _<br>5+ [ 4 +(-7) -{ 6 ×(5+ 1x4)}]<br><br>

s2008m [1.1K]

Answer:

−28−6^2x4

Step-by-step explanation:

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3 years ago

How do I complete this question on arc length?

tresset_1 [31]

Answer:

v ≈ 8.5 km/h

Step-by-step explanation:

Since the diameter of the wheel is 3 m the radius will be r = 1.5 m.

Use the radius of the water wheel to find it's circumference C:

$C=2\pi r$ [set r = 1.5 m]

⇒ $C=2\pi (1.5)$

⇒ $C=3\pi$ m

One revolution of the water wheel corresponds to $3\pi$ meters so the angular velocity 15 rmp (revolutions per minute) corresponds to:

$15(3\pi )$ = $45\pi$ $m$ /min

Using this result, the speed of the river in kilometers per hour will be:

$v=\frac{45\pi m }{1 min}$ × $\frac{1 km}{1000 m}$ × $\frac{60 min}{1 h}$

⇒ $v=8.48230016469$ $km/h$

⇒ $v$ ≈ $8.5$ km/h

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3 years ago

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Find the area of the parallelogram. (simplify your answer)

Sophie [7]

A = b . h
a = 13 . 7
a = 91 cm^2

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3 years ago