1940s. In the United States, where Ten Thousand Villages (formerly Self Help Crafts) began buying needlework from Puerto Rico in 1946, and SERRV began to trade with poor communities in the South in the late 1940s. The first formal “Fair Trade” shop which sold these and other items opened in 1958 in the USA.

6 0

2 years ago

Given that a circle has a radius of 4inches and then a radius of 12inches after it has expanded. Given that the formula for a ci

nlexa [21]

Answer:

Rate of change = 3π or 9.43

Explanation:

Given the following data;

Initial radius, R1 = 4 inches

Final radius, R2 = 12 inches

To find the rate of change;

First of all, we would determine the area of the circle.

Mathematically, the area of a circle is given by the formula;

Area of circle = πr²

For initial radius, R1;

Area of circle, A1 = πR1²

Area of circle, A1 = 4π square inches

For final radius, R2;

Area of circle, A2 = πR2²

Area of circle, A2 = 12π square inches

Now, we can find the rate of change;

Rate of change = A2/A1

Rate of change = 12π/4π

Rate of change = 3π (in terms of pie).

7 0

2 years ago

Estimate, to the nearest tenth of a minute, the times that P-waves and S-waves firstarrived at each recording station (seismogra

VashaNatasha [74]

P waves can travel through liquid and solids and gases, while S waves only travel through solids. Scientists use this information to help them determine the structure of Earth.

S waves have a larger amplitude than P waves and cause the ground's surface to move both vertically and horizontally, making them more dangerous. Surface waves, which move slowly, are the last to arrive. P waves leave the earthquake first and go the furthest. Rock oscillates perpendicular to the direction of wave propagation in S or shear waves. In rock, S waves typically move at a pace of roughly 60% that of P waves, and they always come after the latter. Points of solid media move back and forth perpendicular to the wave's direction of propagation due to S waves, also known as shear or transverse waves. As the wave passes, the medium is sheared first in one direction and then in the opposite direction.

To learn more about P-waves and S-waves click the link below:

brainly.com/question/29334933

#SPJ4

8 0

8 months ago