Find x for this isosceles triangles. pls

Step-by-step explanation:

we know that

An isosceles triangle has two equal sides and two equal interior angles

so

The triangles of the figure are isosceles triangles, because they have two equal sides

Remember that

The sum of the interior angles in the triangle is equal to 180 degrees

In the triangle of the left we have that

The measure of the two equal interior angles are 5x and 5x and the measure of the third angle (vertex angle) is 2x by vertical angles)

so

solve for x

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.