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3 years ago

12

MATH TEST PLEASE HELP

2 answers:

DIA [1.3K]3 years ago

5 0

Answer:

Step-by-step explanation:

d

PIT_PIT [208]3 years ago

4 0

Answer:

B) False because r is closer to 1

Step-by-step explanation:

A perfect negative correlation is seen as r=-1, since the answer r=0.997 is positive and very close to 1, this is almost a perfect POSITIVE correlation. Since the question asks about a negative correlation it is false, and the reasoning is because it is closer to 1 than 0. If it was closer to 0 than it would be a "low" correlation but not negative. The answer is B.

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Convert the repeating decimal to a rational number 0.4000

atroni [7]

Answer:

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4 years ago

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The school band sold T-shirts to fund a trip to play in a parade. They collected $570, and the band made 34% of that amount. How

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7 0

3 years ago

A store has a 40% off sale oh headphones. With the discount the price of one pair of headphones is 36$ What is the original pric

Makovka662 [10]

Answer: $90

Step-by-step explanation:

Let the original cost be represented by x

From the question, it was given that the cost of headphones at 40% discount is $36

Thus, 40% discount = $36

100% = x

Then, convert to decimal

40% = 40/100 = 0.4

100% = 100/100 = 1

Therefore, 0.4 = $36

1 = $x

0.4x = $36

Divide both sides by 0.4

x = $36/0.4

x= $90

Original cost of the headphone was $90.

I hope this helps.

4 0

3 years ago

Help ASAP 15 points

zhuklara [117]

Answer:

Step-by-step explanation:

a) Let's $x$ the length of the side of the small square.

Thus,

$x^{2} + (\sqrt{40})^2 = (\sqrt{50})^2$

$x^{2} + 40 = 50$

$x^{2} = 50 - 40$

$x^{2} = 10$

$x = \sqrt{10}$

$x=3.16$

b) Now, the area of the small square is

$A= x^{2}$

$A=(3.16)^2$

$A=9.99$

3 0

3 years ago