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3 years ago

Can anyone help me ASAP!

Mathematics

1 answer:

igomit [66]3 years ago

3 0

Answer:

7.8

Step-by-step explanation:

the answer is

$\sqrt{61}$

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Simplify (5x^3+7x-8)+(2x^3-5x^2-x+3)

Anna [14]

Answer:

Step-by-step explanation:

8 0

3 years ago

Vincent borrowed $300 for a new TV. If he promised to repay the loan at a simple annual interest rate of 2%, how much will he ow

Jobisdone [24]

Hi there
The formula is
A=p (1+rt)
A ?
P 300
R 0.02
T 3 years
So
A=300×(1+0.02×3)
A=318

Hope it helps

5 0

3 years ago

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43 ×56 show how you get it

tankabanditka [31]

Answer:

2408

Step-by-step explanation:

6 0

3 years ago

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Find the value of x for which the function y = x5-x³ + x² - 1 has a local minimum.

melisa1 [442]

The given function presents a local minimum in the coordinates (0,-1).

<h3>Factoring</h3>

In math, factoring or factorization is used to write an algebraic expression in factors. There are some rules for factorization. One of them is a factor out a common term for example: x²-x= x(x-1), where x is a common term.

For solving this question, the given equation should be rewritten from the factoring.

$x^5-x^3+x^2-1=\left(x+1\right)^2\left(x-1\right)\left(x^2-x+1\right)=0$ . Then, you have 3 equations.

From the Zero Factor Principle, you can write

Equation 1

(x+1)²=0

x+1=0

x= -1

Equation 2

x-1=0

x=1

Equation 3

x²-x+1=0

$x_{1,\:2}=\frac{-\left(-1\right)\pm \sqrt{\left(-1\right)^2-4\cdot \:1\cdot \:1}}{2\cdot \:1}\\ \\ x_{1,\:2}=\frac{-\left(-1\right)\pm \sqrt{3}i}{2\cdot \:1}$

From these points it is possible to plot a graph and you can see that the local minimum presents the coordinates (0,-1).