Find the value of x in this problem?

10

Step-by-step explanation:

Remark

The base angle is 90 degrees. It is so marked. The triangle is isosceles, which  means that the perpendicular is also bisecting the base.

The base is 1/2 48 = 24

Givens

Hypotenuse: 26

1/2 base = 24

height = ?

Formula

a^2 + b^2 = c^2

Solution

a^2 + 24^2 = 26^2

a^2 = 676 -  576

a^2 = 100                   Take the square root of both sides

sqrt(a^2) = sqrt(100)

a = 10

The height is 10 units.

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk