Use the distributive property to remove the parentheses (-6+4v+2y)(-2)

Mathematics

2 answers:

natima [27]3 years ago

8 0

Answer: -8v-4y+12

Step-by-step explanation:

liubo4ka [24]3 years ago

3 0

Answer:

-8v-4y+12

Step-by-step explanation:

(-2)(-6+4v+2y)

-2 times -6 equals 12

-2 times +4v equals -8v

-2 times +2y equals -4y

So the answer is -8v-4y+12

Hope this helps!

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(D) How do you write 6<br> 20<br><br> as a percentage?

vagabundo [1.1K]

Answer:

62%

Step-by-step explanation:

10 000 ÷ 100 = 100

620 ÷ 100

= 62%

5 0

3 years ago

ASHA 777 [7]

For the answer to the question above, first, we must calculate the standard error. The standard error is standard deviation divided by the square root of the sample. In this case, it is equal to 0.178. The z-score has defined the distance from the sample to the population mean in units of standard error.

z = (3 – 2.5)/0.178 = 2.81
at this z-score, the probability is 0.9974 or
if rounded off it is 1%
I hope my answer helped

7 0

3 years ago

Jerry took a sample of 4 employees in his office and observed how many hours they each worked one day.

Illusion [34]

The error in Jerry's calculation is 4.84

The number of employees, N = 4

The mean is calculated as:

$\mu = \frac{10+2+4+8}{4} \\\mu = \frac{24}{4} \\\mu = 6$

The formula for the standard deviation is:

$SD =\sqrt{\frac{\sum{(x-\mu)^2}}{N} }$

This can be further calculated as:

$SD = \sqrt{\frac{(10-6)^2+(2-6)^2+(4-6)^2+(8-6)^2}{4} }\\\\SD = \sqrt{\frac{4^2+(-4)^2+(-2)^2+(2)^2}{4} } \\\\SD = \sqrt{\frac{16+16+4+4}{4} } \\\\SD = \sqrt{\frac{40}{4} } \\\\SD = \sqrt{10} \\\\SD = 3.16$