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horsena [70]
2 years ago
13

Perform the operation. (-2x^2 – 8x + 3) + (-9x^2 + x + 3)

Mathematics
2 answers:
galina1969 [7]2 years ago
5 0

Answer:

-11x^{2} + 7x + 6

Step-by-step explanation:

ludmilkaskok [199]2 years ago
3 0
The answer is: - 11x^2 - 7x + 6
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An airplane takes off from an airport. When the
Ivanshal [37]

The angle of elevation is = 70° and the distance the airplane travelled in the air is = 17,557ft

<h3>Calculation of the distance travelled</h3>

  • To calculate the angle of elevation of the airplane

tan x° = opposite/adjacent

where opposite = 16,500 feet

adjacent = 6,000 ft

tan x° = 16,500 / 6,000

tan x° = 2.75

X = arctan ( 2.75)

X = 70°

  • To calculate the distance the airplane travelled in the air Pythagorean Theorem is used.

C² = a² + b²

C² = 16,500² + 6,000²

C² = 272250000 + 36000000

C² = 308250000

C= √308250000

C= 17,557ft

Learn more about Pythagorean Theorem here:

brainly.com/question/343682

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Need help with this one
Tatiana [17]
Its D

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fourteen cups of tomato sauce makes 30 servings of spaghetti. How many cups are needed for 45 servings?
Arte-miy333 [17]

Answer:

28 cups

Step-by-step explanation:

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Following decimals into words 15.06​
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Answer:

Fifteen and six hundredths

Step-by-step explanation:

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3 years ago
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If You Have To Pay Someone $279 In Denominations Of $20 Or Less, What Is The Least Number Of Bills You Could Use?
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You can use 27 $10 bills which gets your at a total of $270 then you can use 1 $5 bill so now you're at $275 then you can use 4 $1 bills that gets you at your total of $279. The least number of bills you can use is 32.
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