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PSYCHO15rus [73]
3 years ago
14

Find the value of 7 + 32 (-5 + 1) ÷ 2. A. 25 B. 32 C. -11

Mathematics
1 answer:
kobusy [5.1K]3 years ago
5 0

Answer:

  • as written, -57
  • as perhaps intended, C. -11

Step-by-step explanation:

The expression shown evaluates as ...

  7 + 32(-5 +1)/2 = 7 +32(-4)/2 = 7 -128/2 = 7 -64 = -57

_____

If we assume your "32" is supposed to be 3², or 3^2, then the expression evaluates differently:

  7 +3²(-5 +1)/2 = 7 + 9(-4)/2 = 7 -36/2 = 7 -18 = -11 . . . . matches choice C

_____

When in doubt, you can have the Google calculator evaluate your expression. However, you do have to write it properly and with all the required parentheses.

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In May, the school store sells 80 erasers. In June, the store sells only 16 erasers. What is the percent of change in erasers so
lawyer [7]

Answer:  80%

Step-by-step explanation:

Since we have given that

Number of erasers sold in May = 80

Number of erasers sold in June = 16

Decrement in 1 month gap is given by

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So, Percentage of change in erasers sold from May to June is given by

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= -80% (Decreased 80%)

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3 years ago
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The decomposition of the parallelogram into triangle then into a rectangle is shown below 

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4 0
3 years ago
Simplify the expression
asambeis [7]

Answer:

B

Step-by-step explanation:

given

- 4x²(3x - 7)

multiply each term in the parenthesis by - 4x²

= (-4x² × 3x) + ( - 4x² × - 7)

= - 12x³ + 28x² → B



6 0
3 years ago
Read 2 more answers
Height of a parallelogram is half it's base.if it's area is 200 sq cm.find it's height and base.
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Answer:

Step-by-step explanation:

4 0
3 years ago
The area of the regular hexagon is 10.4 in.2. a regular hexagon has side lengths of 2 inches and an area of 10.4 inches squared.
VARVARA [1.3K]

Answer:

  (b)  1.7 in

Step-by-step explanation:

The area of a regular polygon in terms of perimeter and apothem is given by the formula ...

   A = 1/2Pa

For a hexagon, the perimeter is 6 times the side length, so this becomes ...

  A = 1/2(6s)a = 3sa . . . . . for side length 's' and apothem 'a'

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Solving for the apothem, we find ...

  a = A/(3s)

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The apothem, rounded to tenths, is 1.7 inches.

5 0
2 years ago
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