3 years ago

Someone please please help help me please please help help please please help me please please ASAP ASAP!!!!

Mathematics

1 answer:

zhannawk [14.2K]3 years ago

8 0

okay so what you want to do is lie by saying you did it.

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What is the average (arithmetic mean) of the first 90 measurements in a certain list of 92 measurements? (1) the average of the

marishachu [46]

The sum of all the measurements is just the average times the number.

$\bar x = \frac{1}{n} \sum_{i=1}^n x_i$

$\sum_{i=1}^n x_i = n \bar x$

So if the average of all 92 is 7 the sum of those is $92 \times 7$

The average of the last two is 7.2 so their sum is $2 \times 7.2$

That means the sum of the first 90 is $92 \times 7 - 2 \times 7.2$

so the average of the first 90 is

$\dfrac{92 \times 7 - 2 \times 7.2}{90} = 6.99556$ cm

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3 years ago

Geet sells televisions. He earns a fixed amount for each television and an additional $25 if the buyer gets an extended warranty

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Answer:

50 dollars.

Step-by-step explanation:

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1,425 - 475= 950

950 divided by 19 is 50.

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3 years ago

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Marina CMI [18]

Answer:

√125=5√5

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3 years ago

The price of a notebook was

Pie

Old price: p1 = $ 3.90;

New price: p2 = $ 3.40.

The percentual decrease is given by

d(%) = [ (p2 - p1) / p1 ] * 100 %

d(%) = [ (3.40 - 3.90) / 3.90 ] * 100 %

d(%) = [ - 0.50 / 3.90 ] * 100 %

d(%) = - 0.128 * 100 %

d(%) = - 12.8 % (approximately)

So the price fell 12.8 % approximately.

I hope this helps. =)

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3 years ago

URGENT graph the image of the given triangle after the transformation that has the rule (x, y) 》(x, -y)

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Answer:

See Below

Step-by-step explanation:

That rule is a transformation across the x-axys.

Assigne a letter to each point:

A = (2, 7) => A' = (2, -7)

B = (-5, -2) => B' = (-5, 2)

C = (4, -3) => C' = (4, 3)

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3 years ago

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