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3 years ago

12. 6 + x2 when x = 1/2

Mathematics

1 answer:

pshichka [43]3 years ago

4 0

Answer:

13.6

Step-by-step explanation:

12.6 + [1/2]2 = 13.6

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Find the product of 2/5 with the quotient of 7/3 and 4/5

marissa [1.9K]

Answer:

7/6

Step-by-step explanation:

7/3÷4/5

7/3×5/4

35/12

Now the multiplication

2/5×35/12

70/60

7/6

6 0

2 years ago

3. Let x = - and y =

alukav5142 [94]

Answer:

answer is d

Step-by-step explanation:

7 0

3 years ago

Which two lines are parallel? Explain your reasoning.<br> 1. 5y=2x-5<br> 2. 5y=-4+3x<br> 3. 5y-3x=-1

rodikova [14]

2 and 3 are both parallel because both slopes are m=3/5, which equal slopes-parallel lines

8 0

3 years ago

Read 2 more answers

n HP laser printer is advertised to print text documents at a speed of 18 ppm (pages per minute). The manufacturer tells you tha

Dominik [7]

Answer:

0.321 is the probability that their mean printing speed of the sample is greater than 17.99 ppm.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 17.39 ppm

Standard Deviation, σ = 4.25 ppm

Sample size = 11

We are given that the distribution of printing speed is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}$

P(printing speed of the sample is greater than 17.99 ppm.)

P(x > 17.99)

$P( x > 17.99) = P( z > \displaystyle\frac{17.99-17.39}{\frac{4.25}{\sqrt{11}}}) = P(z > 0.468229)\\\\P( z > 0.468229) = 1 - P(z < 0.468229)$

Calculating the value from the standard normal table we have,

$1 - 0.679 = 0321= 32.1\%\\P( x > 17.99) = 32.1\%$

Thus, 0.321 is the probability that their mean printing speed of the sample is greater than 17.99 ppm.

8 0

3 years ago

X^2-3=5x simplify this

Alex Ar [27]

To simplify x^2-3 =5x

You would first subtract 5x from both sides

X^3-5x-3

Next you would plug this into the quadratic equation:

X=5+/- the square root of: -5^2 -4(1)(-3)/2(1)

Then simplify,
5+/- the squareroot of 24 + 12 / 2

5+/- The squareroot of 36 /2

5+/- 6 / 2

Then solve if it’s an addition or subtract

5+6/2

X=11/2 or 5 1/2

5-6/2

X= -1/2

The answer is x=-1/2 or x=11/2

Hope this helps

7 0

3 years ago