a dog park covers an area of 3.49x10^4 yards. the community park next to it covers and area of 1.6x10^4 yards. what is the total number of yards in the dog park and community park combined?
To find the total area of the two parks combined, we need to add the areas of the dog park and the community park.
The area of the dog park is given as 3.49x10^4 yards.
The area of the community park is given as 1.6x10^4 yards.
To add these areas, we simply add the numbers in front of the powers of 10 separately:
3.49 + 1.6 = 5.09
Since both areas are measured in yards, we keep the units constant.
Therefore, the total area of the dog park and community park combined is 5.09x10^4 yards.
the distance from mercury to the sun is about 35,000,000 miles, the distance from the earth to the sub is about 5.8x10^7 farther. what is the distance from earth to the sun? write your answer in scientific notation to 1 decimal place
To find the distance from Earth to the Sun, we need to subtract the distance from Mercury to the Sun (35,000,000 miles) from the distance from Earth to the Sun (5.8x10^7 miles).
5.8x10^7 miles - 35,000,000 miles = 2.3x10^7 miles
Therefore, the distance from Earth to the Sun is approximately 2.3x10^7 miles.
calcuate 5.3x10^-3 - 6.7x10^-6. express the answer in scientific notation rounding to 2 decimal places
To subtract these numbers, we need to make sure that they have the same exponent.
5.3x10^-3 - 6.7x10^-6 can be rewritten as:
5.3x10^-3 - 0.0067x10^-3
Now, we can subtract them:
5.3 - 0.0067 = 5.2933
To express the answer in scientific notation and round to 2 decimal places, we can write it as:
5.29x10^-3
the average weight of am elephant is 1.15x10^4 pounds the average weight of a cat is 14 pounds. how much heavier is an elephant than a cat? express your answer is scientific notation
To calculate how much heavier an elephant is than a cat, we need to subtract the average weight of a cat from the average weight of an elephant.
1.15x10^4 pounds - 14 pounds = 1.15x10^4 pounds
Therefore, an elephant is 1.15x10^4 pounds heavier than a cat.
light travels at an approximate rate of 1.9x10^5 mi./sec there are approximately 2.6x10^6 seconds in a month. about how many miles does light travel in a month? write the answer in scientific notation. express the answer to the exact decimal place
To find out how many miles light travels in a month, we need to multiply the rate of light by the number of seconds in a month.
Rate of light: 1.9x10^5 mi/sec
Number of seconds in a month: 2.6x10^6 sec
Multiplying these two numbers:
(1.9x10^5 mi/sec) * (2.6x10^6 sec) = 4.94x10^11 mi
Therefore, light travels approximately 4.94x10^11 miles in a month.