Help me do this plz

Mathematics

1 answer:

Sholpan [36]3 years ago

8 0

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Nikola likes to play horseshoes, where players try to score a ringer by throwing a horseshoe so it lands around a post. A player

steposvetlana [31]

Answer:

0.9 for the top box and 1.68 for the bottom box

Step-by-step explanation:

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2 years ago

Explain how you would round the number 33 and 89 estimate their sum

Brrunno [24]

I am assuming that we have to round the numbers to the nearest tens.
When rounding off numbers, if the number is more than half, then you round it up for example, if the number is 15 and you want to round it off, you round it up to 20. But if the number is 14 you round is down to 10

Therefore, 33 would be rounded off to 30 as 3 is less than 5 in the ones place if you get what I mean.

As for 89, you would round it up to 90 as the 9 in the ones place is more than 5.

Therefore the sum of 90 and 10 is 100.

Hope this helps!

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3 years ago

Tom ate 1/2 of the leftovers. How much pie in all did he eat

melisa1 [442]

1/2+1/2=2/2=1 so 1/2 was eaten and the other half was leftovers.

8 0

3 years ago

Read 2 more answers

A new medical test provides a false positive result for hepatitis 2% of the time that is a perfectly healthy subject being teste

Oxana [17]

Given that X <span>be the number of subjects who test positive for the disease out of the 30 healthy subjects used for the test.

The probability of success, i.e. the probability that a healthy subject tests positive is given as 2% = 0.02

Part A:

</span><span>The probability that all 30 subjects will appropriately test as not being infected, that is the probability that none of the healthy subjects will test positive is given by:

</span> $P(X)={ ^nC_xp^x(1-p)^{n-x}} \\ \\ P(0)={ ^{30}C_0(0.02)^0(1-0.02)^{30-0}} \\ \\ =1(1)(0.98)^{30}=0.5455$
<span>

Part B:

The mean of a binomial distribution is given by

</span> $\mu=np \\ \\ =30(0.02) \\ \\ =0.6$
<span>
The standard deviation is given by:

</span> $\sigma=\sqrt{np(1-p)} \\ \\ =\sqrt{30(0.02)(1-0.02)} \\ \\ =\sqrt{30(0.02)(0.98)}=\sqrt{0.588} \\ \\ =0.7668$
<span>

Part C:

This test will not be a trusted test in the field of medicine as it has a standard deviation higher than the mean. The testing method will not be consistent in determining the infection of hepatitis.</span>

5 0

3 years ago

How do I solve this math problem?

Alina [70]

You would subtract 11 on both sides of the equation.
Then multiply the reciprocal of 1/2 which is 2.
And you should get -16 as your answer <span />

6 0

3 years ago

Read 2 more answers