2 years ago

PLEASE HELPP MEE!!!!

Mathematics

1 answer:

Artemon [7]2 years ago

5 0

does the answer help you.

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Which pair of expressions below are equivalent? a. −4−8 and 4+8 b. −4−8 and −4+8 c. −4−8 and −4−(−8) d. −4−8 and −4+(−8)

omeli [17]

Answer:

d. −4−8 and −4+(−8)

Step-by-step explanation:

+ - is equivalent to -

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2 years ago

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Allushta [10]

A scatter plot with a trend line that has a slope of 1/3 shows a positive correlation between the data. Positive correlation indicates that as one set of data increases, the other will also increase. A trend line shows a rough estimate on the relationship between two sets of data. A line with a slope of 1/3 is increasing, so this indicates that the data in the scatter plot are positively correlated.

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2 years ago

Hey I have a link to the question since its kinda complicated

Natalija [7]

Anyway

so the recursive rule tells the relationship between the previous term and the term we want to find

given

an=2n+11
it is clear that the first term is 13
2nd term is 15
3rd term is 17

each term increases by 2
so
a term is equal to the previous term plus 2
an=a(n-1)+2

the first one is the answer

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3 years ago

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A deadly bacteria doubles in size every 3 hour. If there were initially 14 spores present, how long will it take for the number

Len [333]

1792=3x+14
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2 years ago

The length of a photograph is 3cm less than twice the width. The area is 54cm². Find the dimentions of the photograph.

AnnyKZ [126]

L=2w-3

w(2w-3)=54

2w²- 3w-54=0

A= 2 , B= -3, C= -54

sub values into quadratic formula
i attached picture of formula

Final answer: you will be given 2 answers 6 and -4.5. -4.5 is rejected since a negative value cannot represent length because that just doesn't make sense.

w=6

Check:
L=2w-3
=2(6)-3
=12-3
=9
9*6=54

Therefore the dimensions of the photograph are 6 cm by 9 cm

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3 years ago

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