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3 years ago

Name two properties used to evaluate 7x1-4x1/4

Mathematics

1 answer:

Kitty [74]3 years ago

5 0

7x1=7, then 4x1/4= 4x1=4 divided by 4= 1. Then subtract 7- 1= 6

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A simple random sample of 100 men is chosen form a population with mean height 71 in and standard deviation 2.5 in. What is the

ankoles [38]

Answer:

2.28%

Step-by-step explanation:

The z score is used to determine how many standard deviations that the raw score is above or below the mean. If the z score is positive then the raw score is above the mean and if it is negative then it is below the mean. It is given by:

$z=\frac{x-\mu}{\sigma}\\ \\\mu = mean, \sigma=standard\ deviation,x=raw\ score\\\\For\ a\ sample\ n\\\\z=\frac{x-\mu}{\sigma/\sqrt{n} }\\\\For\ x$

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4 years ago

3x(5x+2)(x-4)=0 what do the X's equal to

Lorico [155]

After solving the equation $3x(5x+2)(x-4)=0$ we get values of x: $x=-3, x=-2/5\,\,and\,\,x=4$

Step-by-step explanation:

We need to find the value of x from the equation: $3x(5x+2)(x-4)=0$

Solving the expression:

$3x(5x+2)(x-4)=0$

Using the Zero Factor Principle: if ab=0 then a=0 and b=0

So, $3x=0, 5x+2=0\,\,and\,\, x-4=0$

$x=-3, x=-2/5\,\,and\,\,x=4$

So, After solving the equation $3x(5x+2)(x-4)=0$ we get values of x: $x=-3, x=-2/5\,\,and\,\,x=4$

Keywords: Solving Equations

Learn more about Solving Equations at:

#learnwithBrainly

8 0

3 years ago

40÷1+3‐(3×7)+7-5 use pedams to answer the following question

Masja [62]

Hey there!

40 / 1 + 3 ‐ (3 * 7) + 7 - 5

= 40 + 3 - (3 * 7) + 7 - 5

= 43 + 7 - 5 - 3 * 7

= 50 - 5 - 3 * 7

= 45 - 3 * 7

= 45 - 21

= 24

Answer: 24

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

4 0

3 years ago

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RSB [31]

Answer:

Solution given:

<Q+<P=180°[su m of co interior angle is supplementary]

<Q+95=180

<Q=180-95

<Q=85

m<Q=85° degree

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3 years ago

Clara has already printed pages of a novel she plans to write 15 additional pages per month until she is finished right and solv

MA_775_DIABLO [31]

Answer:

Step-by-step explanation:

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3 years ago