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aleksley [76]
3 years ago
11

How can one fourthx − 3 =one halfx + 8 be set up as a system of equations?

Mathematics
2 answers:
julia-pushkina [17]3 years ago
6 0
The answer is B hope this help u
GarryVolchara [31]3 years ago
3 0

Answer:

4y − x = −12

2y − x = 16

Step-by-step explanation:

Given : \frac{1}{4}x-3=\frac{1}{2}x+8

We get,

\frac{1}{4}x-3=y   ..........(1)

\frac{1}{2}x+8=y .....(2)

Multiply equation (1) by 4 , we get,

x-12=4y

or 4y-x= -12

Now, multiply equation (2) by 2 , we get,

x+16=2y

or 2y-x= 16

Hence, option B is correct.

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A quality control expert at Glotech computers wants to test their new monitors. The production manager claims they have a mean l
tankabanditka [31]

Answer:

The probability that the mean monitor life would be greater than 96.3 months in a sample of 84 monitors

P(X⁻ ≥ 96.3) = 0.0087

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the mean of the Population = 95

Given that the standard deviation of the Population = 5

Let 'X' be the random variable in a normal distribution

Let X⁻ = 96.3

Given that the size 'n' = 84 monitors

<u><em>Step(ii):-</em></u>

<u><em>The Empirical rule</em></u>

         Z = \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }

        Z = \frac{96.3 - 95}{\frac{5}{\sqrt{84} } }

       Z = 2.383

The probability that the mean monitor life would be greater than 96.3 months in a sample of 84 monitors

    P(X⁻ ≥ 96.3) = P(Z≥2.383)

                      =  1- P( Z<2.383)

                      =  1-( 0.5 -+A(2.38))

                      = 0.5 - A(2.38)

                     = 0.5 -0.4913

                    = 0.0087

<u><em>Final answer:-</em></u>

The probability that the mean monitor life would be greater than 96.3 months in a sample of 84 monitors

P(X⁻ ≥ 96.3) = 0.0087

3 0
3 years ago
Please help me thank you
laila [671]
Parallel lines have the same slope. The equation of the parallel line is therefore:

y = x + b

Plug in the values you are given to find b:

2 = -3 + b

b = 5
6 0
3 years ago
ANY SMART PPL OUT THERE? (question about perimeter)
N76 [4]

Answer:

your answers are:

P= 2(l+w) units

P= 2(5)+2(9) units

P=(l+l)+(w+w) units

Step-by-step explanation:

each of these answers portray L two times for each side and W two times for each side which will give you your perimeter.

7 0
3 years ago
Simplify this please
aliina [53]

Answer:

2a +5

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
PLEASE HELP I DON’T UNDERSTAND GIVE EXPLANATION PLEASE In a recent year, 22.3% of all registered doctors were female. If there w
bija089 [108]

Answer:

247,085 doctors in total

Step-by-step explanation:

55,100 = 22.3℅ ÷22.3

2,471 = 1℅

2471.85x100 = 247,085 doctors

To check I'll do 247,085÷100 = 2,470.85 = 1℅

2,470.85 × 22.3 = 55,099.955 which would round up to 51,000.

7 0
4 years ago
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