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masya89 [10]
3 years ago
8

63-47 using mental math​

Mathematics
2 answers:
Anettt [7]3 years ago
7 0

Answer:

63 - 47 equals 16

EastWind [94]3 years ago
6 0

Answer:

16

Stepgsgwgwrgf

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A book is 6 inches wide and 9 inches tall.
Makovka662 [10]

Answer:

54

Step-by-step explanation:

Leave the 2.5 out

Multiply 9 × 6

So.....9 × 6 = 54

So the area will be 54 of the front of the book after the book is enlarged.

Hope this helps!

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2 years ago
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Step-by-step explanation:

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GIVING BRAINLIEST -60 points-<br><br> Answer 1, 2, 3 &amp; 4 for brainliest.
natali 33 [55]

Answer:

2.

the distance from E to D,D toF and F to E are equal.

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2 years ago
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A survey is made to determine the number of households having electric appliances in a certain city. It is found that 75% have r
Mashcka [7]

Answer:

The probability that a household has at least one of these appliances is 0.95

Step-by-step explanation:

Percentage of households having radios P(R) = 75% = 0.75

Percentage of households having electric irons P(I) = 65% = 0.65

Percentage of households having electric toasters P(T) = 55% = 0.55

Percentage of household having iron and radio P(I∩R) = 50% = 0.5

Percentage of household having radios and toasters P(R∩T) = 40% = 0.40

Percentage of household having iron and toasters P(I∩T) = 30% = 0.30

Percentage of household having all three P(I∩R∩T) = 20% = 0.20

Probability of households having at least one of the appliance can be calculated using the rule:

P(at least one of the three) = P(R) +P(I) + P(T) - P(I∩R) - P(R∩T) - P(I∩T) + P(I∩R∩T)

P(at least one of the three)=0.75 + 0.65 + 0.55 - 0.50 - 0.40 - 0.30 + 0.20  P(at least one of the three) = 0.95

The probability that a household has at least one of these appliances is 0.95

3 0
2 years ago
PLEASE HELP AND EXPLAIN SO I CAN LEARN. THANKS. Indicate whether each item described contains parallel lines or perpendicular li
AfilCa [17]

Answer:

Hey! I think I can help.

Parallel lines are lines that can't meet.Perpendicular lines are lines that can meet.

e.)Since the line at 12 and the line at 9 meets then it is a perpendicular line.

c.)Perpendicular line.

a.)Perpendicular line.

b.)Parallel line.

d.)Depending on how they are faced if the ends of the telephone wire meets the second one then it is perpendicular but if not then it is parallel that's if they are in different directions which they can not meet.Thank you for the question

5 0
3 years ago
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