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3 years ago

76=8x can u solve this pls

Mathematics

2 answers:

ohaa [14]3 years ago

5 0

Answer:

x = 9.5

Step-by-step explanation:

I hope this helps you out!

Nitella [24]3 years ago

3 0

Answer:

x=9.5

Step-by-step explanation:

Divide both sides by 8

76/8=8/8

x=9.5

I hope this helped you, have a great day! :)

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Jane and john shared some money such that jane got 4 times as much money as john. What fraction of money did john get ?

VMariaS [17]

Answer:

1/5

Step-by-step explanation:

let's assume the share John gets to be x

John: x

jane: 4x

therefore there total will be 5x

x/5x=0.2 or 1/5

3 0

3 years ago

What is the solution to this system of equation y=4/3x-1

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3 years ago

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1. Find the greatest common factor of 8 and 10

otez555 [7]

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3 years ago

A recent CBS News survey reported that 64% of adults felt the U.S. Treasury should continue making pennies. Suppose we select a

enyata [817]

Complete Question

A recent CBS News survey reported that 64% of adults felt the U.S. Treasury should continue making pennies. Suppose we select a sample of 18 adults.

a-1. How many of the 18 would we expect to indicate that the Treasury should continue making pennies

a-2) What is the standard deviation?

a-3) What is the likelihood that exactly 3 adults would indicate the Treasury should continue making pennies?

Answer:

a-1 $\= x = 11 .52$

a-2 $\sigma = 2.036$

a-3 $P(3) = 4.7*10^{-5}$

Step-by-step explanation:

From the question we are told that

The sample size is $n = 18$

The proportion of adult that felt the U.S. Treasury should continue making pennies is p = 0.64

The proportion of adult that feel otherwise is

$q = 1- p = 1-0.64 = 0.36$

The mean is mathematically evaluated as

$\= x = n * p$

substituting values

$\= x = 18 * 0.64$

$\= x = 11 .52$

The standard deviation is mathematically represented as

$\sigma = \sqrt{ npq}$

substituting values

$\sigma = \sqrt{18 * 0.64 * 0.36}$

$\sigma = 2.036$

The likelihood that 3 adult would indicate the Treasury should continue making pennies is mathematically evaluated as

$P(3) = \left n} \atop \right. C_3 (p)^{3} * (q)^{n-3}$

Now

$\left n} \atop \right. C_3 = \frac{n! }{[n-3] ! 3!}$

substituting values

$\left n} \atop \right. C_3 = \frac{18! }{[15] ! 3!}$

$\left n} \atop \right. C_3 = \frac{18 * 17 * 16 * 15! }{[15] ! (3 *2 *1 )}$

$\left n} \atop \right. C_3 = \frac{18 * 17 * 16 }{ (3 *2 *1 )}$

$\left n} \atop \right. C_3 = 816$

$P(3) = 816 * (0.64 )^3 * (0.36 )^{18-3}$

$P(3) = 4.7*10^{-5}$

8 0

3 years ago

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spayn [35]

Answer:

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4 0

3 years ago

76=8x can u solve this pls​

76=8x can u solve this pls