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Artist 52 [7]
3 years ago
13

(m - 8) ÷ 2 in standard form (no links)

Mathematics
1 answer:
Shalnov [3]3 years ago
3 0

Answer:

1/2m - 4

Step-by-step explanation:

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Tell whether the ordered pair is a solution of the system of linear equations.
melamori03 [73]

Answer: No, it is not a solution. It makes the first equation true, but the second equation is false when (x,y) = (16, 1)

To check a possible solution, we replace the variable letters with their actual numbers. The given solution is (x,y) = (16,1) so x = 16 and y = 1 pair up. We'll replace x with 16, and replace y with 1.

Do so with the first equation and simplify

y = (-1/4)*x + 5

1 = (-1/4)*16 + 5

1 = -4 + 5

1 = 1 ... true

And repeat for the second equation

y = (1/6)*x - 2

1 = (1/6)*16 - 2

1 = 2.667 - 2

1 = 0.667 .... false

The equation above is false, so the original equation is false when (x,y) = (16,1). This proves the point is not on the line.

So overall, (16,1) is not a solution to the system.

5 0
3 years ago
Factor 9x^+12x+4=0 please help
UkoKoshka [18]

Answer:

(3x+2) ^2

x = -2/3

Step-by-step explanation:

9x^2+12x+4 = 0

We need to recognize that this is perfect squares

(a + b)2 = a^2 + 2ab + b^2;

Where a = 3x  and b =2

a^2 = 9x^2 2ab = 2*3x*2 = 12x and b^2 = 2^2 =4

So we can factor this as (3x+2) ^2

If you want to solve

We can use the zero product property

(3x+2) ^2 =0

Take the square root of each side

3x+2 =0

Subtract 2 from each side

3x=-2

Divide by 3

3x/3 = -2/3

5 0
3 years ago
450 people are randomly selected at grocery stores across the state and surveyed on the amount of money they are spending at the
____ [38]

Answer:

Step-by-step explanation:

Sample variance when large number of samples are drawn we have tend to become a normal distribution.

Variance of the sample is different since variance

Var(x) = E(x^2)-{E(x)}^2

is the formula used for finding the variance of any sample.

But sampling distribution of variance requires repeating this process with the different samples several times.

So option A is not right

B is also not correct, C is wrong

D.The sampling distribution of the mean requires multiple samples to be compared. However, in this situation you are looking for the variance, so finding the sample variance is the same as investigating the sampling distribution of the variance.

is correct

3 0
4 years ago
Need help on thisss (:
Setler79 [48]

The area is 77 cm

Area= ab/2

area and base=14·11 /2

14 x 11 / 2 =77

4 0
3 years ago
Help please? Will get Brainliest Answer if correct.
pishuonlain [190]

Answer:

1/5 gallon per minute

Step-by-step explanation:

The fill rate for container 1 is 2 gallons in 10 minutes. For container 2 it is 4 gallons in 10 minutes. The difference in rates is ...

(4 gal - 2 gal)/(10 min) = 2/10 gal/min = 1/5 gal/min

5 0
4 years ago
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