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diamong [38]
3 years ago
8

Water with a high calcium content is considered to be hard.

Mathematics
1 answer:
Sav [38]3 years ago
6 0

Answer:    Yes

Step-by-step explanation:   Hard Water Hardness Calcium Magnesium Water Corrosion Mineral Scale. Water described as "hard" is high in dissolved minerals, specifically calcium and magnesium

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If f(x)=5x-25 and g(x) = 1/5x+5 which expression could be used to verify g(×) is the inverse of f(×)
Gelneren [198K]

Answer:

The  expression could be used to verify g(x) is the inverse of f(x) is letter b which is 1/5(5x-25)+5

Step-by-step explanation:


4 0
3 years ago
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Define Disjoint event
klasskru [66]
Two events that can’t happen at the same time
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Multiply (2x+1)(6x^2+8+9)
spayn [35]

Answer:

12x3+6x2+34x+17

Step-by-step explanation:

(2x+1)(6x2+8+9)

=(2x+1)(6x2+8+9)

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=12x3+16x+18x+6x2+8+9

=12x3+6x2+34x+17

6 0
3 years ago
Steve travels 5 times as fast as Kevin. Traveling in opposite directions, they are 390 miles apart after 5 hours. Find their rat
Kaylis [27]

Answer:

steve=65 mph

kevin=13 mph

Step-by-step explanation:

steve=s

kevin=k

s=5

k=1

1=5=6

390 divided by 6 equals s 65

divide further by 5 which equals k 13

3 0
3 years ago
20 points answer if you know the answer!!!
ivolga24 [154]
Pretty sure its D. you need to divide 60.5 by 69 
8 0
4 years ago
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