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ivanzaharov [21]
2 years ago
8

The speed of sound is about 3.4 × 102 meters per second. Mark is performing a science experiment and he needs to know how far so

und travels in 3 × 1010 seconds. If Mark uses a calculator to solve this problem, how will the calculator show the answer? it needs to have an E in the answer
Mathematics
1 answer:
Fed [463]2 years ago
5 0

Speed of the sound =  meters per second

Time to calculate the distance traveled =  3*10' 10 seconds

Since,

1.0*10 ' 13

Distance = Speed x Time

Using the values we get:

distance =3.4*10'2*3+10´30

3.4*3*10' (2+10)

10.2*10' 12

Since the calculators show the final answer is scientific notation, the above answer in scientific notation would be:

Distance = 1.02*10°13

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Find the gradient of the line segment between the points (2,3) and (-3,8).
fiasKO [112]

Answer:

m = -1

Step-by-step explanation:

Given

Points (2,3) and (-3,8)

Required

Determine the gradient

Gradient (m) is calculated by dividing the change in y values by the change in x values.

i.e.

m = \frac{y_2 - y_1}{x_2 - x_1}

Where:

(x_1,y_1) = (2,3)

(x_2,y_2) = (-3,8)

m = \frac{y_2 - y_1}{x_2 - x_1} becomes

m = \frac{8 - 3}{-3 -2}

m = \frac{5}{-5}

m = -1

<em>Hence, the gradient is -1</em>

7 0
1 year ago
An individual head of a sprinkler system covers a circular area of grass with a radius of 25 feet. the yard has 3 sprinkler head
frutty [35]

Answer:

Option D. 5890.5 feet²

Step-by-step explanation:

An individual head of a sprinkler system covers a circular are of grass with a radius of 25 feet.

Yard has three sprinkler heads that each cover circular area with no overlap.

We have to calculate the approximate area watered by these 3 sprinkler heads.

Area covered by one sprinkler = π×r² = π×(25)² = 625π feet²

Therefore area covered by three sprinkler heads = 3 × 625π = 5892.85 feet²

which matches the approximate value of Option D. 5890.5 feet²

3 0
2 years ago
Read 2 more answers
Sandy has 16 roses,8 daisies, and 32 tulips. She wants to arrange all the flowers in bouguets. Each bouguet has the same number
avanturin [10]

Answer:

Greatest number of flowers that can be used in a bouquet is 8.

Step-by-step explanation:

In this question greatest number of flowers used in a bouquet will be decided by the "Greatest Common Factor" of the numbers of the flowers given.

So, factors of 16 = 1×2×2×2×2

Factors of 8 = 1×2×2×2

Factors of 32 = 1×2×2×2×2×2

Common factors = 1×2×2×2

Greatest Common Factor of these numbers will be = 1×2×2×2 = 8.

Therefore, greatest number of flowers that could be in a bouquet is 8.

3 0
1 year ago
Steve can​ wash, fold, and iron a basket of laundry in two hours and prepare a meal in one hour. His roommate Mike can​ wash, fo
masha68 [24]

Answer: The absolute advantage in laundry is held by Steve while the comparative advantage in meal preparation is held by Mike.

Step-by-step explanation:

Absolute advantage is when an individual, firm or country can produce a good or service at a lower cost when compared to the other economic agent. When someone has absolute advantage, it means that the person uses fewer resources and spends less time in producing the good. Based on the explanation, Steve has absolute advantage in laundry since he spends two hours compared to Mike who uses 3hours.

Comparative advantage is when an individual, firm or government can produce a good or service with a lower opportunity cost when compared to the other person. Mike has a comparative advantage in the preparation of meal. It'll be better for Steve to focus his attention on laundry while Mike does the meal.

7 0
2 years ago
Stephen has a dog that weighs 5 times as much as ian’s dog. the total weight of both dogs is 72 pounds. how much does stephen’s
galina1969 [7]
We'll let x represent the weight of Ian's dog.

So we can make the formula Ian's dog (x) + Stephen' dog (5x) = 72

So:
 x+5x=72
6x=72
x=12

So ian's dog is 12 pounds, but we're trying to find stephen's dog (5x)

We need to multiply x by 5 so:

5(12)=60

Therefore, Stephen's dog is 60 pounds

7 0
1 year ago
Read 2 more answers
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