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alina1380 [7]
2 years ago
15

Please help! i need to know the correct answer(s) ! thanks

Mathematics
2 answers:
Fofino [41]2 years ago
7 0
The answer is C and D
Lyrx [107]2 years ago
3 0
It's a negative association because it does from highest to lowest number.
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Rosamaria is setting up a 20 gallon saltwater fish tank that needs to have a salt content of 3.5%. If rosamaria has water that h
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3 years ago
On a vacation in Puerto Rico rose jumped off a cliff into a river in El Yunque go forest reserve her height as a function of tim
gayaneshka [121]

Answer: t = 6 s

Step-by-step explanation:

When Rose hit the water, the height of the jump is 0, so: h(t) = 0.

Resolving it, we have:

-16t² + 16t + 480 = 0

To simplify the second degree equation, divided it by 16:

-t² + t + 30 = 0

Now, solve the equation using Bhaskara:

Δ = 1² - 4. (-1) . 30

Δ = 1 + 120

Δ = 121

t = \frac{-1+\sqrt{121} }{-2}

t₁ = \frac{-1 + 11}{-2} = - 5

t₂ = \frac{-11-11}{-2} = 6

Since time can be negative, it took t = 6s for Rose to hit the water.

6 0
3 years ago
What is %90, percent of 20?
Nonamiya [84]

Answer:

18

Step-by-step explanation:

4 0
3 years ago
Which fraction is closest to 1/2? A number line from negative 1 to 1 in halves. 1/6 3/8 3/4 ‐1/2
Arturiano [62]
Answer: 3/8

because 3/8 is .375
And 3/4 is .75
And 1/6 is .1666

1/2 is .50
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5 0
2 years ago
Which of the following is equal to 5.3?
soldier1979 [14.2K]
[4.6+2×(5_2)]÷2=7

4.6+2=4.8
4.8×5=240
240_2=238
238÷2=116
8 0
3 years ago
Read 2 more answers
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