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never [62]
3 years ago
10

What is 5/6x(-4 1/2)x(-2 1/5)= ?

Mathematics
2 answers:
BaLLatris [955]3 years ago
6 0

Simplify the expression.

33x^2/4

Pani-rosa [81]3 years ago
5 0
it’s 8 1/4 or 8.25

5/6 times (-4 1/4) times (-2 1/5)

Which equals 1/2 times 3/2 times 11

That equals 33/4

Then simplify and you will get 8 1/4 or 8.25
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The first three steps of completing the square to solve the quadratic equation x2 +4x-6=0
hodyreva [135]

Answer:


Step-by-step explanation:

1.  Move the 6 to the other side:   x^2 +4x                        =6

2.  Square half the coefficient of the x term:  (4/2)^2 = 4

3.  Add this 4, and then subtract this 4, from x^2 + 4x:

     x^2 +4x + 4 - 4                       =6

4.  Rewrite this perfect square as the square of a binomial:

      (x + 2)^2   -   4   = 6

5.  Add 4 to both sides:    (x + 2)^2 =  10

6.  Find the sqrt of both sides:  x + 2 = √

8 0
3 years ago
Population A and Population B both have a mean height of 70.0 inches with an SD of 6.0. A random sample of 50 people is picked f
Alex

Answer:

Sample mean from population A has probably more accurate estimate of its population mean than the sample mean from population B.

Step-by-step explanation:

To yield a more accurate estimate of the population mean, margin of error should be minimized.

margin of error (ME) of the mean can be calculated using the formula

ME=\frac{z*s}{\sqrt{N} } where

  • z is the corresponding statistic in the given confidence level(z-score or t-score)
  • s is the standard deviation of the sample (or of the population if it is known)
  • N is the sample size

for a given confidence level, and the same standard deviation, as the sample size increases, margin of error decreases.

Thus, random sample of 50 people from population A, has smaller margin of error than the sample of 20 people from population B.

Therefore, sample mean from population A has probably more accurate estimate of its population mean than the sample mean from population B.

7 0
3 years ago
Please help! Brainiest worth 15 points
klio [65]

Answer:

IJ

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What is the quotient of the fractions below?<br> 3/5 divided by 5/11
Afina-wow [57]

Answer:

1 8/25

Step-by-step explanation: its right

3 0
3 years ago
Please help will give brainlist if its correct
Ugo [173]

Answer:

I think it's B

Step-by-step explanation:

x = -2

2 + x > -8

2 + -2 > -8

0 > -8

4 0
3 years ago
Read 2 more answers
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