Answer:
Q + S = 360 - 55 - 45 = 260
Q = S
=> Q = 260/2 = 130
C is correct
2x-8=5x+5
5x-2x=-8-5
3x=-13
x=-13/3,
or
x=-4 1/3
Correlation coefficients whose magnitude are between 0.3 and 0.5 indicate variables which have a low correlation.<span> Correlation coefficients whose magnitude are less than 0.3 have little if any (linear) correlation.</span>
Answer:
1. Yes
2. No
3. Yes
4. No
Step-by-step explanation:
When you say a random sample, this means that every member of the population will have a chance to be part of the sample. If you consider the scenarios, only the 1st and 3rd option will come up with a random sample because the respondents of the sample is not predetermined. If you take the other options into consideration, you can see that not everyone would have had a chance to be part of the sample.
1.) 7 x109= Population of the world is around 7 billion written out as 7,000,000,000
2.) 1.08 x109= Approximate speed of light is 1080 million km per hour or 1,080,000,000 km per hour
3.) 2.4 x105= Distance from the Earth to the moon is 240 thousand miles or 240,000 miles
4.) 9.3 x107= Distance from the Earth to the sun is 93 million miles or 93,000,000 miles
5.) 3.99 x1013= Distance from the sun to the nearest star (Proxima Centauri) is 39,900,000,000,000 km
6.) 9.4605284 ×1015= Distance light travels in a year is less than 9.5 trillion kilometers, or exactly 9,460,528,400,000,000 km
7.) 1.4 x108= Amount of water surface area on the Earth is 140 million square miles or 140,000,000 square miles
8.) 1.0 x1014= Approximate number of cells in the human body is 100 trillion or 100,000,000,000,000
9.) 1.332 x10-3= Density of oxygen is 1332 millionths g per cc or .001332 g per cc
10.) 2.4 x10-3= Diameter of a grain of sand is 24 ten-thousandths inch or .0024 inch
7.53 x10-10= Mass of a dust particle is 0.000000000753 kg
11.) 9.1093822×10-31= Mass of an electron is 0.00000000000000000000000000000091093822 kg
12.) 4.0 x10-7= Length of the shortest wavelength of visible light (violet) is 0.0000004 meter
