Question

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Answer 1

Answer:

B) (x)=5

(y)=7

C) (15cm)

Step-by-step explanation:

B) 5x =25 (corresponding sides are always equal)

x=25/5=5

x= 5

4y+2 =30

(corresponding sides are always equal)

4y=30-2=28

y=28/4=7

C) TO FIND H

WE HAVE TO DO

b²+l² =h²

9²+12²=h²

81+144=h²

225 = h²

√225= h

15 cm=h

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Answer 2

Answer:

1st problem

In a parallelogram opposite sides are equal

Therefore ux=vw and uv=xw

4y+2=30 and 5x=25

4y+2=30

4y=28

Y=28/4

Therefore y=7

5x=25

X=5

Therefore y=7, x=5

2nd problem

TriangleLMN is a right angled triangle

Lm=12cm

Mn=9cm

Pythagoras theorem

Hyp^2=side^2+side^2

Here Ln is hyp necause it is opposite to 90 degrees

Assume Ln=x

Applying Pythagoras theorem

X^2=12^2+9^2

X=

$\\sqrt{144 + 81}$

X=15