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Dvinal [7]
3 years ago
12

Help I will give brainliest!!

Mathematics
2 answers:
Elena-2011 [213]3 years ago
8 0

Answer:

I think it is A and D but i'm sorry if i'm wrong

Step-by-step explanation:

tino4ka555 [31]3 years ago
8 0

Answer: A

Step-by-step explanation:

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1. The speed of sound in water is 1,500 meters/second. How far can sound travel in 10
baherus [9]

Answer:

  • 900 km
  • 5400 km

Step-by-step explanation:

<u>The speed of sound in water:</u>

  • s = 1500 m/sec

<u>Time:</u>

  • t = 10 min = 10*60 sec = 600 sec

or

  • t = 1 hour = 60 min = 60*60 sec = 3600 sec

<u>Distance in 10 min:</u>

  • d = s*t
  • d = 1500 *600 = 900 000 m = 900 km

<u>Distance in 1 hour:</u>

  • d = 1500*3600 = 5 400 000 m = 5400 km
5 0
3 years ago
Enter the distance, in units, between point A and point C.​
kipiarov [429]

Answer:

6

Step-by-step explanation:

7 0
3 years ago
Use proportional reasoning to solve for the missing value in each of the following scenarios. Enter a numerical answer only.A bu
yuradex [85]

Q1. A business jet burns 300 gallons of gasoline per hour. How many gallons of gasoline will the jet burn in a three hour flight?

Let the number of gallons required in 3 hours be = x

\frac{x}{3}=\frac{300}{1}

x=900 gallons.

Answer: The business jet burns 900 gallons of gasoline in a three hour flight.

Q2. On average, one gallon of gasoline weights approximately six pounds. How many pounds does fifty gallons of gasoline weigh?

Let the weight in pounds of 50 gallons be = x

\frac{1}{6}=\frac{50}{x}

x=300 pounds

Answer: Fifty gallons of gasoline weighs 300 pounds.

Q3. For every one yard, there are thirty-six inches. Convert 2,124 inches to an equivalent number of yards.

Let the number of yards be = x

\frac{1}{36}=\frac{x}{2124}

36x=2124

x=\frac{2124}{36}=59 yards

Answer: 2,124 inches = 59 yards

Q4.  A person who weighs 240 pounds burns 180 calories per mile of running. If a person burns thirty-six calories by running one mile, how much does the person weigh?

Let the weight of the person be = x

\frac{240}{180}=\frac{x}{36}

180x=240\times36

180x=8640

x=48 pounds

Answer: A person who weighs 48 pounds, burns thirty-six calories while running one mile.

Q5. A rice casserole recipe serves four people and requires two tablespoons of butter. How many people will the rice casserole serve if the recipe is scaled to require six tablespoons of butter?

Let the number of people who can be served be = x

\frac{4}{2}=\frac{x}{6}

2x=24

x=12

Answer: A rice casserole that requires six tablespoons of butter serves 12 people.



5 0
3 years ago
4. An airplane at T(80,20) needs to fly to both U(20,60) and V(110,85). What is the shortest possible distance for the trip?
Alexeev081 [22]
Distance between T(80, 20) and U(20, 60) = sqrt((20 - 80)^2 + (60 - 20)^2) = sqrt((-60)^2 + (40)^2) = sqrt(3600 + 1600) = sqrt(5200) = 72.11 units

Distance between T(80, 20) and V(110, 85) = sqrt((110 - 80)^2 + (85 - 20)^2) = sqrt((30)^2 + (65)^2) = sqrt(900 + 4225) = sqrt(5125) = 71.59

Distance between U(20, 60) and V(110, 85) = sqrt((110 - 20)^2 + (85 - 60)^2) = sqrt((90)^2 + (25)^2) = sqrt(8100 + 625) = sqrt(8725) = 93.41

Therefore, shortest distance for the trip = 71.59 + 93.41 = 165 units.
4 0
4 years ago
Five times the sum of 9 and some number is 145. What is the number?
Andrews [41]

Answer:

x=20

Step-by-step explanation:

5(x+9) =145 (watch carefully)

5x + 45 = 145

5x + 45 - 45 = 145 - 45

5x = 100

5x/5 (to cancel eachother out) then --> 100/5

x=20

5 0
4 years ago
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