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2 years ago

12

Sally rolled a 6-sided number cube 40 times and it landed on 4 eight times. What is the experimental probability of Sally gettin

g a 4?

1 answer:

Sedbober [7]2 years ago

5 0

P(roll a 4) = 8/40. It is 8/40 because you rolled the a 4 eight times out of the forty tries. Hope this helps!

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Name three solutions to the inequality. x<7

Gnom [1K]

Answer:

x=anything less than 7

x=5

x=-2

x=-7

x= anything less than 7

Step-by-step explanation:

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2 years ago

the directions are : find the constant of proportionality for the graph and write in the form y = kx.n

Lelechka [254]

here is the answer (A) y=1/5 x

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2 years ago

A certain university recently calculated the number of days that its students took to complete their master's degrees. It took 1

mixer [17]

Answer:

c) 700

Step-by-step explanation:

Add 800 and 600, and then divide by the number of number, or in this case, two. This should give you 700.

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1 year ago

Machine A produces bolts at a uniform rate of 120 every 40 seconds, and Machine B produces bolts at a uniform rate of 100 every

Nutka1998 [239]

Answer:

25 seconds

Step-by-step explanation:

Hi there!

In order to answer this question, first we need to know how many bolts per second are produced by each machine, this can be known by dividing the number of bolts by the time it takes.

For machine A:

$A = \frac{120 bolts}{40 s}= 3 \frac{bolts}{s}$

For machine B:

$B = \frac{100 bolts}{20 s}= 5 \frac{bolts}{s}$

So, if the two machines run simultaneously, we will have a rate of prodcution of bolts equal to the sum of both:

$A+B=(3+5)\frac{bolts}{s}=8\frac{bolts}{s}$

Now, we need to know how much time it will take to producee 200 bolts, to find this out we need to divide the amount of bolts by the production rate:

$t = \frac{bolts}{ProductionRate}= \frac{200 bolts}{8 \frac{bolts}{s} }$

The <em>bolts</em> unit cancell each other and we are left with <em>seconds</em>

$t = \frac{200}{8} s = 25 s$

So it will take 25 seconds to produce 200 bolts with machine A and B running simultaneously.

Greetings!

4 0

2 years ago

Read 2 more answers

Totsaken sold half of his comic books and bought ten more. He now has 40. With how many did he begin?

AURORKA [14]

The answer is 60 because

40-10*2=60

hope it helps

8 0

2 years ago

Read 2 more answers