$\overline{XS}\cong\overline{YT}\Rightarrow 3m+7=4.2m+5\ \ \ |-7\\\\3m=4.2m-2\ \ \ \ |-4.2m\\\\-1.2m=-2\ \ \ \ |:(-1.2)\\\\m=\dfrac{2}{1.2}\\\\m=\dfrac{20}{12}\\\\m=\dfrac{5}{3}\to m=1\dfrac{2}{3}$

$\overline{YS}\cong\overline{XT}\Rightarrow3\dfrac{1}{2}r+2=2r+5\ \ \ \ |-2\\\\3\dfrac{1}{2}r=2r+3\ \ \ \ |-2r\\\\1\dfrac{1}{2}r=3\ \ \ |\cdot2\\\\3r=6\ \ \ \ |:3\\\\r=2$

7 0

3 years ago

Evaluate the expression when c=3 and y=-4. 8c-y

Savatey [412]

Answer:

Step-by-step explanation:

8c - y

8( 3) - (- 4)

24 + 4

3 0

3 years ago

I need help finding the area

BabaBlast [244]

Answer:

Step-by-step explanation:

A=a+b/2*hA=12

A=12*12/2

Hoped this helped! :)

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Have a nice day!

3 0

3 years ago