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Nataly_w [17]
3 years ago
6

How to solve x^4+4x-1=0 ? ...?

Mathematics
1 answer:
Crank3 years ago
7 0

Using the Quadratic formula

x^4 = (x^2)^2

hence

(x^2)^2 + 4x +(-1) = 0

ax^2=1(x^2)^2

bx = 4(x)

c=(-1)

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A scientist uses the equation shown below to predict the future population of a species. In the equation, y represents the estim
ololo11 [35]
Answer:

1200

Explanation:

y represents the estimated population

t represents the number of years.

The equation that predicts the population after t years is given as:

y=150\times4^t

Substitute t = 3/2 into the equation

\begin{gathered} y=150\times4^{\frac{3}{2}} \\ y=150\times2^{2(\frac{3}{2})} \\ y=150\times2^3 \\ y=150\times8 \\ y=1200 \end{gathered}

The closest valuie to the value of y is 1200

3 0
2 years ago
What is 180 squared show your work
Alchen [17]

Answer:

32,400

Step-by-step explanation:

180 * 180 + calculator = 32,400

6 0
4 years ago
Derek owns a landscape business. He charges a fixed fee of $30 plus $1 per 1,000 square feet of lawn mowed. Derek's earnings (in
fgiga [73]
Let f(x) represents function that tells us Derek's earning depending on square feet of lawn mowed which is x.

First we construct function:

f(x) = x/1000 * 1 + 30

x/1000 is a number that tells us the number of mowed units. for x = 1000 square feet he earns 1 dollar that is why we have to divide x by 1000.

if he earned 204 first week that means that x =:
204 = x/1000 + 30
x/1000 = 174
x = 174 000
if we check for each week that he worked we will see that square footage of the lawns he mowed match forth (last) option.

Answer is D.
8 0
3 years ago
Read 2 more answers
10
Ilia_Sergeevich [38]

Answer:

37.5 sq. yards

Step-by-step explanation:

divide 150 by the sides of the square 4.

4 0
3 years ago
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Which answer describes the calculations that could be used to solve this problem?
sveta [45]
A is the correct answer for this






6 0
4 years ago
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