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Vanyuwa [196]
3 years ago
7

Help please

Mathematics
2 answers:
tester [92]3 years ago
6 0

Answer:

64y² - 81

Step-by-step explanation:

(8y +9)(8y - 9)

64y² - 72y + 72y - 81

64y² - 81

tatuchka [14]3 years ago
6 0

<u>Answer:</u>

<h3>. 64y² - 81</h3><h3>. the product is a difference of squares</h3>

<u>Explanation:</u>

(8y + 9)(8y - 9) = 64y² - 81

the product is a difference of squares

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Find the area of each shape, please help and I will give a lot points
Alex73 [517]

Answer:

15. Area of parallelogram = bh

    b = 9m

    h = 4m

    a = 9*4 = 36m^2

   You can also use the rectangle property here.

    a = l*b

    l = 9

    b = 6

    a = 9*6 = 54 m^2

    Though I would prefer the first one better.

16. Area of triangle = 1/2*bh

    b = 17m

    h = 3

    a = 17*3/2 = 51/2 = 25.5m^2

18. Area of a trapezium = a+b/2*h (a and b are two parallel sides and h the            height)

a = 15

b = 7

h = 15

a = 15+7/2*15 = 22/2*15 = 11*15 = 165m^2

19. Area of triangle = 1/2*bh

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Hope u understood

Please mark as brainliest

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2 years ago
***BRAINLIEST IF ANSWERED*******
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Answer:

First find line DE using Pythagoras theorem

That's

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Answer:

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Step-by-step explanation:

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A rectangular box is 8 and a half inches long,5and a fourth inches wide,and 4 inches high.what is its volume
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Move triangle ABC so it lies on top of triangle DEF, triangle GHI, and triangle JKL. How many units do you have to move triangle
dusya [7]

Answer:

See explanation

Step-by-step explanation:

The question is incomplete, as the diagram of coordinates of the three triangles are not given.

A general explanation is as follows:

First, record the coordinates of the corresponding points of the three triangles.

For instance; In triangles ABC, DEF and GHI; A, D and G are corresponding points.

Now, assume the coordinates are:

A = (1,1)

D = (1,5)

G= (-2,1)

Point D is 4 points to the right of A;

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D =(1,1+4) = (1,5)

Hence, ABC will be moved 4 units right to lie on DEF

Similarly, point G is 3 units down of A

i.e.

G =(1-3,1) = (-2,1)

Hence, ABC will be moved 3 units down to lie on GHI.

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3 years ago
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