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Vadim26 [7]
3 years ago
11

Algebra 1. Questions 2-4. Answering any would be awesome!

Mathematics
1 answer:
boyakko [2]3 years ago
5 0
----------2.
6pink 7purple. total count 13.

without replacement draws 1 and then another. (odds of drawing purple)
first draw 7/13
second draw 6/12

7/13•6/12 = 42/156 or 21/78 or 7/26

with replacement.
first draw 7/13
second draw 7/13

7/13•7/13 = 49/169

-------------3.
total $8.40, p=n-60

60•5¢= $3.00

$8.40-$3.00=$5.40
1¢+5¢= 6¢

$5.40/6¢=90¢

1¢•90=90¢
5¢•90=$4.50

150•5¢=$7.50
90•1¢= $0.90

$7.50+$0.90=$8.40


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On monday it took 5 builders to 3 1/2 hours to build a wall
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Answer:   £ 81.38

Step-by-step explanation:

Given: On Monday,

5 builders took 3\dfrac{1}{2} hours  ( i.e. \dfrac{7}{2} hours )  to build a wall.

On Tuesday, only 2 builders were available.

As workers are inversely proportional to the time if the job remains constant.

Inverse variation equation : x_1y_1=x_2y_2

Let x be the time taken by 2 builders, then

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\Rightarrow\ x=\dfrac{35}{2}\times\dfrac{1}{2}=\dfrac{35}{4}=8.75

So, 2 builders will take 8.75 hours.

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≈ £ 81.38

Hence, each builder will be paid £ 81.38 for the work completed on Tuesday .

5 0
3 years ago
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stiks02 [169]

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