3 years ago

If 20 articles cost ? 90, then the cost of 9 articles is ?

Mathematics

1 answer:

lianna [129]3 years ago

6 0

Answer:

40.50

Step-by-step explanation:

90/20 = 4.50

4.50 x 9 = 40.50

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Answer:I need so much help with these two and quick if anybody can helpe out thanks.

Step-by-step explanation:

I need so much help with these two and quick if anybody can helpe out thanks.

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2 years ago

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bagirrra123 [75]

Answer:

$2\frac{1}{3}\: ft$

Step-By-Step Explanation:

$Height\: of \:sail = 1\frac{1}{6}\: ft = \frac{7}{6}\: ft\\Base\: of \:sail = 4\: ft \\Area\: of \:sail =\frac{1}{2} \times base \times height\\=\frac{1}{2} \times \frac{7}{6} \times 4\\= \frac{7}{6} \times 2\\=\frac{7}{3}\\=2\frac{1}{3}\: ft$

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3 years ago

5. Select the choice with the greatest number of students.

Ivahew [28]

Answer A:the number of students who watch 6 to 9 hours of TV

Step-by-step explanation:

Just took the test.

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3 years ago

rita and neha can do certain work indivisually in 20 hours and 25 hours. how much time will it take to complete the work togethe

vladimir2022 [97]

Answer:

11.11 hours

Step-by-step explanation:

Rita = 20 hours

Neha = 25 hours

Let the time that they can complete the work together be written as x

1/20 + 1/25 = 1/x

Lowest Common Denominator is 500

25 + 20/500 = 1/x

45/500 = 1/x

Cross Multiply

45x = 500

x = 500/45

x = 11.111111111 hours

Approximately = 11.11 hours

Therefore, it would take Rita and Neha 11.11 hours to complete the work together.

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3 years ago

Simplify 9 - {x-(7 + x)} 16 -2x + 16 2x+2 0 - 22+2

zlopas [31]

answer :

16

explanation :

9 - (x - (7 + x))

9 - (x - 7 - x)

9 - (-7)

9 + 7

= 16

8 0

4 years ago