Which of the following are expansionary fiscal policy actions? I. Reduction in Social Security withholding taxes II. Purchase of government bonds in the open market III. Increase in the corporate tax rate IV. Decrease in the personal tax rate

I and IV are correct.

Explanation:

The reduction in the personal taxes and in the Social Security withholding taxes are considered as the expansionary fiscal policy. Fiscal policy refers to a policy that is used by the government for monitoring and influencing a nation's economy. Government adjust the expenditure, investment and taxes for maintaining the stability in an economy.

If there is a fall in level of tax rate then this will increase the disposal income of the consumers and hence, an increase in the aggregate demand. Therefore, there is a rightward shift in the aggregate demand curve.

Expansionary fiscal policies refers to the policies which increases the aggregate demand in an economy.

bd = 9 cm

step-by-step explanation:

in a 30°-60°-90° triangle, the ratio of side lengths is 1 : √3 : 2. that is, the longest side (hypotenuse) is twice the length of the shortest side.

all of the triangles in your geometry are 30°-60°-90° triangles. ac is the hypotenuse of δacd, and the short side of δabc.

the short side ad of δacd will be half the length of ac, so 3 cm. the hypotenuse ab of δabc will be twice the length of ac, so 12 cm. segment bd is the difference of the lengths ab and ad, so is

bd = ab -ad

bd = 12 cm - 3 cm = 9 cm

comment on side length ratios

you can figure the ratios of side lengths in a 30°-60°-90° triangle by considering the trig ratios of the angles. or you can figure the length of the altitude of an equilateral triangle of side length 2 using the pythagorean theorem.

the correct option is c