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Phoenix [80]
1 year ago
14

14. a) Calculate 27 + (42 ÷ 7 + 3) ÷ 3

Mathematics
2 answers:
prisoha [69]1 year ago
6 0

Answer:

a) 27 + (42÷7+3)÷3

27 + (6 + 3) ÷3

27+ 9 ÷3

27 + 3

30 use BODMAS

AfilCa [17]1 year ago
6 0

Step-by-step explanation:

please mark me as brainlest

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What is 6 feet, 2 inches plus 4 feet, 8 inches ?
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Answer:

10 ft 10 in

Step-by-step explanation:

Note that there are 12 inch in 1 feet. Add corresponding numbers together:

6 ft 2 in + 4 ft 8 in = (6 ft + 4 ft) + (2 in + 8 in) = 10 ft + 10 in

10 ft 10 in is your answer.

~

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3 years ago
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The SAT is standardized to be normally distributed with a mean µ = 500 and a standard deviation σ = 100. What percentage of SAT
Aliun [14]

Answer:

34.134%

68.268%

Step-by-step explanation:

Given that:

Mean (m) = 500

Standard deviation (s) = 100

Percentage between 500 and 600

P(500 < x < 600)

P(x < 600) - P(x < 500)

Z = (x - m) / s

P(x < 600)

Z = (600 - 500) /100 = 1

P(x < 500)

Z = (500 - 500) / 500 = 0

P(Z< 1) - P(Z < 0)

0.84134 - 0.5

= 0.34134

= 0.34134 * 100%

= 34.134%

B.) Between 400 and 600

P(x < 400)

Z = (400 - 500) /100 = - 1

P(x < 600)

Z = (600 - 500) / 500 = 1

P(Z< 1 ) - P(Z < - 1)

0.84134 - 0.15866

= 0.68268

= 0.68268 * 100%

= 68.268%

8 0
2 years ago
Using the Addition Method, solve for x in the following system of linear equations.
Anna71 [15]

Answer:

x = 0

Step-by-step explanation:

if 2y + x = 4

we can assume that y = 2
if y - 3x = 2

it means 2 - 0 = 2

therefore x = 0

4 0
2 years ago
[3 - (4 + 32 * 8) ÷ 4] =
serg [7]
<span>[3 - (4 + 32 * 8) ÷ 4] 
=</span>[3 - (4 + 4) ÷ 4] 
= 3 - 8 ÷ 4
= 3 - 2 
= 1
7 0
2 years ago
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