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2 years ago

8

A bag contains 45 marbles of various colors. Jon draws 60 times, each time replacing the marble before drawing again. He gets a

total of 12 blue marbles. Which is best prediction of how many blue marbles are in the bag? Please explain.

1 answer:

iren2701 [21]2 years ago

6 0

Can u post the whole picture and question

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If Jeff washes his car in 6 minutes and bob washes the same car in 8 minutes. How long does it take both of them to wash the sam

Tatiana [17]

Answer:

3 3/7 or 24/7 mins

Step-by-step explanation:

Let total job = X

Jeff's rate = X/6

Bob's rate = X/8

Combined rate = X/6 + X/8

(4X × 3X)/24 = 7X/24

7X/24 = X/T

T = X ÷ (7X/24)

T = X × (24/7X)

T = 24/7 mins

Shortcut:

T = product of individual times/sum of individual times

T = (6×8)/(6+8)

T = 48/14

T = 24/7

T = 3 3/7 mins

8 0

2 years ago

Read 2 more answers

Please help! thanks :)

Evgen [1.6K]

If you times 39.99 by 0.20 (20%) then you get your answer of $7.99

4 0

2 years ago

Pls guys help me pls :c

Vinil7 [7]

Answer: A. $x\geq21\dfrac{2}{3}$ .

Step-by-step explanation:

The given inequation: $81-1\dfrac{1}{5}x\leq55$

$\Rightarrow\ 81-\dfrac{6}{5}x\leq55$

Multiplying 5 on both the sides, we get

$5(81-\dfrac{6}{5}x)\leq5\times55\\\\\Rightarrow\ 405-6x\leq275\\\\\Rightarrow\ 6x\geq405-275\\\\\Rightarrow\ 6x\geq130\\\\\Rightarrow\ x\geq\dfrac{130}{6}\\\\\Rightarrow\ x\geq\dfrac{65}{3}\\\\\Rightarrow\ x\geq21\dfrac{2}{3}$

Hence, the inequality for x is $x\geq21\dfrac{2}{3}$ .

So, the correct option is A. $x\geq21\dfrac{2}{3}$ ..

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3 years ago

Find the surface area.<br> 5 cm<br> 14 cm<br> 9 cm<br> 3 cm

notsponge [240]

Answer:C. 2/3 cm/s

Step-by-step explanation:

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2 years ago

Allie already owns 33 necklaces, and additional necklaces are priced at 1 for a dollar. How much money does Allie need to spend

ziro4ka [17]

Answer:

75-33=42

Step-by-step explanation:

total (75) minus what she already owns (33) leaves you with how much she still needs since they're each a dollar

6 0

2 years ago