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Marina CMI [18]
4 years ago
14

Evaluate x+x^3-4x^4 when x = 2 (need answer asap please)

Mathematics
2 answers:
lara [203]4 years ago
8 0

Answer:

Step-by-step explanation:

x + x^3 - 4x^4

2 + 2^3 - 4(2^4)

2 + 8 - (4 * 16)

10 - 64 = -54

egoroff_w [7]4 years ago
3 0
-54 is the final answer
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Benin is sawing boards to make a deck. What is the area of the deck, shown
sergejj [24]

Answer:

<u>C. 108.5 square feet</u>

Step-by-step explanation:

<u>Area of the deck</u>

  • Area (left triangle) + Area (rectangle) + Area (right triangle)
  • 1/2 x 6 x 7 + 10 x 7 + 1/2 x 7 x 5
  • 21 + 70 + 17.5
  • 91 + 17.5
  • <u>108.5 square feet</u>
3 0
3 years ago
Which question is a statistical question? A Which U.S. States have mountains?Which U.S. States have mountains? B Which mountain
erastovalidia [21]

Answer: C. How many mountain ranges are in the U.S.

Step-by-step explanation:

A statistical question first of all has to have a quantitative response i.e., answers should be in numbers.

The only two questions here that would yield a numeric answer are options C and D.

Furthermore, a statistical question has variability in it which means that the answer is based on multiple observations not just one. The observations in option C are mountain ranges and as the question requires finding out details about multiple mountain ranges, this is a statistical question.

This is opposed to option D which addresses issues surrounding just one mountain.

5 0
3 years ago
Look at the graph.
Rainbow [258]

Answer:

f(x) =80 \cdot \:  {( \frac{1}{4} )}^{x - 1}

Step-by-step explanation:

Fro the graph, the first three terms of the sequence are 80,20,5,...

This is a geometric sequence with first term

f(1)= 80

The common ratio is

r =  \frac{20}{80}  =  \frac{5}{20}  =  \frac{1}{4}

The function is given by

f(x) = f(1) \cdot \:  {r}^{x - 1}

We substitute the values we got from the graph into this formula to get:

f(x) =80 \cdot \:  {( \frac{1}{4} )}^{x - 1}

The correct answer is A

5 0
3 years ago
Read 2 more answers
Please someone help quick
Contact [7]

Answer:

J

Step-by-step explanation:

dude trust me

6 0
3 years ago
Two planes are the same altitude. From the airport , one plane is 50 km away in the direction of N°60 E and another is 80 km awa
djverab [1.8K]

9514 1404 393

Answer:

  78.5 km

Step-by-step explanation:

Measured at the airport, the angle between the two planes is ...

  180° -60° -50° = 70°

The law of cosines tells us the distance between the planes is ...

  d = √(50² +80² -2·50·80·cos(70°)) ≈ √6163.84 ≈ 78.5 . . . km

The planes are about 78.5 km apart.

6 0
3 years ago
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