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juin [17]
2 years ago
12

Solve the following addition and subtraction problems. a. 3 km 9 hm 9 dam 19 m + 7 km 7 dam b. 5 sq.km 95 ha 8,994 sq.m + 11 sq.

km. 11 ha 9,010 sq. m. c. 44 m – 5 dm d. 73 km 47 hm 2 dam - 11 km 55 hm
Mathematics
1 answer:
kipiarov [429]2 years ago
5 0
As a general rule to solve the problem we are going to transform all values to the lower unit.  
a. 3 km 9 hm 9 dam 19 m + 7 km 7 dam
  3,000 m 900 m 90 m 19 m + 7,000 m 70 m = 4,009 + 7,070 = 11,079 m 
  b. 5 sq.km 95 ha 8,994 sq.m + 11 sq. km. 11 ha 9,010 sq. m.
  5,000,000 sq m 95,0000 sq m 8,994 sq m + 11,000,000 sq m 110,000 sq
9,010 sq m
  5,103,994 sq m + 11,119,010 sq m = 16,223,004 sq m 
 c. 44 m – 5 dm
  44 m - 0.5 m = 43.5 m 
 d. 73 km 47 hm 2 dam - 11 km 55 hm

  73,000 m 4,700 m 20 m - 11,000 m 5,500 m 
77,720 m - 16,500 m = 61,220 m
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A small batch of trail mix contains 2 cups of raisins, 2 cups of peanuts, 1 cup of sunflower seeds, and 1 cup of chocolate coate
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Answer:

4 CUPS OF SUNFLOWER SEEDS for the larger batch

Step-by-step explanation:

From the small batch:

2 cups of peanuts= 1 cup of sunflower seeds

Since the ratios are thesame, it therefore means that the proportion will be thesame.

For the large batch:

8 cups of peanuts = X cups of sunflower seeds.

Mathematically, let's express it as:

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1 year ago
A photocopy machine can reduce copies to 80% of their original size. By copying an already reduced copy, further reductions can
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<u>Part a)</u> if a page is reduced to 80%, what percent enlargement is needed to return it to its original size?

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we know that

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therefore

<u>the answer Part a) is</u>

the percent enlargement is 125%

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A photocopy machine can reduce copies to 80% of their original size

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<u>the answer Part b) is</u>

the number of times in succession is 9


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Given that:
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