2 3/5 - 1 3/8 estimate

Answers

Answer 1
Answer: 2 3/5 - 1 3/8
estimate : 3 - 1 = 2

actual :
2 3/5 - 1 3/8 =
13/5 - 11/8 =
104/40 - 55/40 =
49/40 = 1 9/40
Answer 2
Answer: 1 9/40

first you make the denominated 40

Then you multiply the same number you used to multiply the denominator

Then subtract

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The sum of two consecutive integers is 65. What are the numbers?

Answers

32 and 33 this is because it equals 65 and they are one after another

A water tank holds 549 gallons but is leaking at a rate of 4 gallons per week. A second water tank holds 732 gallons but is leaking at a rate of 7 gallons per week. After how many weeks will the amount of water in the two tanks be the same?

Answers

in 61 weeks the two tanks will be the same

An astronaut drops a rock into a crater on the moon. The distance, d(t), in meters, the rock travels after t seconds can be modeled by d(t)=0.8t^2. What is the average speed, in meters per second, of the rock between 5 and 10 seconds after it was dropped?

Answers

the average speed, in meters per second, of the rock between 5 and 10 seconds after it was dropped would be 12

carey needs $45 to buy her mother a gift.She has saved 22% of that amount so far. How much more money does she need

Answers

Answer:

35.1

Step-by-step explanation:

You have to multiply 45 by .22, and you would get 9.9. Then, you have to subtract 45 and 9.9 to get 35.1. 35.1 is your answer

Roselyn planted 60 bean plants in her garden, 12 of which did not sprout.What is the ratio of plants that sprouted to those that did not sprout

Answers

48:12
because 60-12 is 48 and 48 plants sprouted and 12 did not 

Plz help with 1 through 6 show ur work

Answers

1. 5×10×7= 350
2. 12×6×8=576
3. 4.2×3.5×2=29.4
4. 1.1×1.5×2.6=4.29
5.4×3×5= 60
6. 4.1×2.6×5.1=47.97