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Vsevolod [243]
3 years ago
8

Jackson gave Lena this expression to evaluate: 14(8 + 12). Lena said that to evaluate the expression was simples

Mathematics
2 answers:
Veseljchak [2.6K]3 years ago
8 0

Answer:

Step-by-step explanation:

Lena's method by prime

= 14 = 7 x 2 = 2/7        Factors  or simply just 14 x 20 =280

= 20 = 10 x 2 = 2/10    Factors

= 2 x 2 =4                    Cross multiply

= 7 x 10 = 70

Jackson's method by algebra and by adding to the product of 14 and 12

14(8+12)

112+ 160

= 280

Jackson was right in this discussion, as the process within-algebraic shows clarity of the two multiples; being 154 x 8 and 14 x 12, without this we cannot check for mistakes, and we cannot learn from correct answers as often.

krok68 [10]3 years ago
3 0

Answer:

see explanation

Step-by-step explanation:

a) lena's method:

  • 14(8+12)
  • 14(20)=280

jackson's method:

  • 14(8+12)
  • 112+12
  • 124

b) lena is right because when evaluating expressions, you have to follow PEMDAS. parentheses come before multiplication.

:)

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BabaBlast [244]
Take 16x divide it by 2 and square it. 16/2= 8. 8^2= 64. So, the first step will be to add 64 to both sides.
8 0
3 years ago
Ryan needs 20 feet of cable. The longest piece on her truck is 18 3/8 feet. How many feet too short is the cable on the truck? *
prisoha [69]

Answer:

1 5/8 too short

Step-by-step explanation:

The cable on the truck is 18 and 3/8 ... to complete the fraction into a whole number we would need 5 more parts in order to complete the entire 8 parts of the fraction. This would make the cable a whole 19 feet. Since Ryan needs 20 ft, this would leave us needing 1 more foot. Therefore, the cable in the truck is

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6 0
3 years ago
PLZ, I need help with problems 1 and 2! Thanks!
Harlamova29_29 [7]
1)
Parameter = 10+7+3+8+4+8+3+7
Parameter = 50 ft

2)
Area = Area 1 + Area 2

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8 0
3 years ago
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ki77a [65]

Answer:

45.2 MB

Step-by-step explanation:

19.3% is equivalent to \frac{19.3}{100}

Given that the total size of the file is 234 MB and only \frac{19.3}{100} has been downloaded,

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5 0
4 years ago
Read 2 more answers
If 60 max is 40% what is full marks
ELEN [110]
The sentence can be interpreted as: 60 = 40% of what number
60/x = 40/100
Cross multiply
40x = 60(100)
40x = 6000
Divide both sides by 40
x = 150
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3 years ago
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