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2 years ago

-x/6 + 6 = 32 What is the answer and how do I solve it

Mathematics

1 answer:

masha68 [24]2 years ago

8 0

Answer:

x= -120

Step-by-step explanation:

-x/6+6+6=32

Use -a/b=a/-b= -a/-b to rewrite the fraction.
-x/-6+6+6=32
Add the two 6's then you get 12
-x/-6+12=32
Multiply both sides with the equation by 6
-x+72=192
Move the constant to the right-hand side and change its side
-x=192+72
Subtract the numbers, -x=192-72
-x=120
Change the signs on both sides of the equation
You have your answer it is x= -120

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12% of children are nearsighted, but this condition often is not detected until they go to kindergarten. A school district tests

Klio2033 [76]

Answer:

There is a 34.60% probability that 0 or 1 of them is nearsighted.

Step-by-step explanation:

For each children, there are only two possible outcomes. Either they are nearsighted, or they are not. This means that we can solve this problem using the binomial probability distribution.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinatios of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

In this problem, we have that:

12% of children are nearsighted. This means that $p = 0.12$ .

A school district tests all incoming kindergarteners' vision. In a class of 18 kindergarten students, what is the probability that 0 or 1 of them is nearsighted?

There are 18 students, so $n = 18$

This probability is:

$P = P(X = 0) + P(X = 1)$

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 0) = C_{18,0}.(0.12)^{0}.(0.88)^{18} = 0.1002$

$P(X = 1) = C_{18,1}.(0.12)^{1}.(0.88)^{17} = 0.2458$

$P = P(X = 0) + P(X = 1) = 0.1002 + 0.2458 = 0.3460$

There is a 34.60% probability that 0 or 1 of them is nearsighted.

5 0

3 years ago

Please help me please

kodGreya [7K]

Answer:

divide it

Step-by-step explanation:

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2 years ago

True or false?<br> If 3a > 9, then a > 27

olchik [2.2K]

False because 3x27 would equal 81 a should equal less than 27

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3 years ago

Please answer if so thank you and explain

anyanavicka [17]

Y=12+2x
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To solve the equation for 11 weeks, we replace x with 11.

2×11+12= 24
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2 years ago

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shusha [124]

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Step-by-step explanation:

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