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xz_007 [3.2K]
3 years ago
11

Estimate the total weight of two boxes that weigh 9.4 pounds and 62.6 pounds using rounding and compatible numbers. Wich estimat

e is closer to the actual total weight? why? PLEASE HELP ITS DUE TOMORROW AND IM SO FRUSTRATED I JUST TURNED ELEVEN BE EASY ON ME AND PLEASE HELP!!!!!!
Mathematics
1 answer:
pochemuha3 years ago
4 0

Compatible numbers are not well defined things. The idea with compatible numbers is to replace the numbers in the problem with numbers that are approximately the same and yet the calculations are easy. In this problem what I think is expected is to replace 9.4 with 10 and 62.6 with 60 giving an approximate sum of 10 + 60 = 70.

Rounding has a more precise definition. If you are rounding to an integer then 9.4 rounds to 9 and 62.6 to 67. This gives an approximate sum of 9 + 63 = 72.

Source: http://mathcentral.uregina.ca/QQ/database/QQ.09.08/h/jeff1.html

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rjkz [21]

Answer:

$161.88

Step-by-step explanation:

1, 425 * 0.05 = 71.25 = yearly

71.25 / 12 = 5.94 = monthly

5.94 * 2 = 11.88 = for two months

11.88 + 150 = 161.88 = the amount he is expected to pay

Tell me if I'm wrong :)

8 0
2 years ago
Jayden leans a 30-foot ladder against a wall so that it forms an angle of 65 ∘ with the ground. How high up the wall does the la
vaieri [72.5K]

Answer:

27.19 ft.

Step-by-step explanation:

sin 65 = x/30

sin 65(30) = x

27.189 ≈27.19

8 0
3 years ago
Is (1,-3) is a solution of the equation 8p-2q=14?
PSYCHO15rus [73]

Answer: YES

<u>Step-by-step explanation:</u>

  8p - 2q = 14

8(1) - 2(-3) = 14

8   -    -6   = 14

 8    +   6  = 14

       14      = 14

            TRUE

8 0
3 years ago
Read 2 more answers
A sound wave travels through iron at a rate of 5120\,\dfrac{\text{m}}{\text{s}}5120
Jet001 [13]

The rate at which the sound travels in km/hr is 0.142km/hr

<h3>Conversion of m/s to km/hr</h3>

If a sound wave travels with a speed of 5120m/s, in order to convert to km/he, we will use the conversion factor below;

1hr = 3600secs

1km = 1000m

Using the conversion factor in our dimensional analysis

5120m/s = 5120m/1s * 1km/1000m * 3600s/1hr

5120m/s  = 5120m/3600000

5120m/s = 0.142km/hr

Hence the rate at which the sound travels in km/hr is 0.142km/hr

learn more on dimensional analysis here: brainly.com/question/21510595

#SPJ1

6 0
2 years ago
A building has a shadow that is 25 feet long. A person 6 feet tall cast a similar shadow. How long is the person's shadow?
mario62 [17]
Imagine the side of the building is one side to a triangle and the second would be from the top of the building to the point where the shadow ends and the third is from the base of the building to the point where the shadow ends. Just use the pythagoreon theorem to find stuff. I can't solve the problem you gave because you would need the height of the building
5 0
3 years ago
Read 2 more answers
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