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Brrunno [24]
2 years ago
5

Domain and range f(x) = -x 4+ x 2- x - 4

Mathematics
1 answer:
Allushta [10]2 years ago
8 0

Answer: \mathrm{Domain\:of\:}\:-x^4+x^2-x-4\::\quad \begin{bmatrix}\mathrm{Solution:}\:&\:-\infty \:

\mathrm{Range\:of\:}-x^4+x^2-x-4:\quad \begin{bmatrix}\mathrm{Solution:}\:&\:f\left(x\right)\le \:-2.94521\dots \:\\ \:\mathrm{Interval\:Notation:}&\:(-\infty \:,\:-2.94521\dots ]\end{bmatrix}

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Ben bought a movie ticket for $37.50. He got $12.50 for change. How much was the ticket?
Tom [10]

Answer:

$25

Step-by-step explanation:

37.50-12.50=$25.00

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2 years ago
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Kyle pours 3/4 liter of a liquid from a beaker. Then he puts another 1/2 liter of liquid. What is the overall change in the amou
Nadusha1986 [10]

Answer:

1 and 1/4

Step-by-step explanation:

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5 0
3 years ago
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A music store sold a total of 27 used trumpets and clarinets in one month. Trumpets cost $149 and clarinets cost $99. If total s
vodomira [7]
Answer: 16

Solution:

1) Use letters to identify the variables:

Number of trumpets: t
Number of clarinets: c

2) Translate each statement into algebraic (mathematical) language.

2.1) Sold a total of 27 used trumpets and clarinets

=> t + c = 27

2.2) Trumpets cost $149 and clarinets cost $99

Total cost of the trumpets: 149t
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Total cost = 149t + 99c

2.3) Total sales were $3223

=> 149t + 99c = 3223.

3) State the system of equations:

Equation (1) t + c = 27
Equation (2) 149t + 99c = 3223

4) Solve the system of equations:

4.1) Multiply equation 1 by 149:

=> 149t + 149c = 4023

4.2) Subtract the equation (2) from the equation obtained in 4.1

=> 149c - 99c = 4023 - 3223

=> 50c = 800

=> c = 800 / 50 = 16

5) Verify the solution:

From equation (1) t = 27 - 16 = 11

Total cost = 149*11 + 99*16 = 3223

Now you have a verified answer: they sold 16 clarinets
7 0
3 years ago
Trina has a total of 32 crayons.how many boxes of crayons did she buy
Sever21 [200]
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4 0
3 years ago
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Answer:

0.02.90 and 2.90

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2% of 90 equal to both 0.02.90 because are worth same.

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