Ask question

Ask question

All categories

Ksenya-84 [330]

3 years ago

15

Plz do this and show all the work. Use factoring

1 answer:

Anika [276]3 years ago

3 0

Answer:
x1=-1, x2=4/5

Step by step explanation:
5x^2 - 4 + x = 0
Use the commutative property to reorder the terms:
5x^2+x-4=0
Write x as a difference:
5x^2+5x-4x-4=0
Factor out 5x from the expression:
5xx(x-1)-4x - 4=0
Factor out -4 from the expression:
5xx(x+1) - 4 (x-1)=0
Factor out x+1 from the expression:
(x-1) x (5x-4) =0
When the product of factors equal 0 at least one factor is 0
X + 1 = 0
5x - 4 = 0
Solve the equation:
The equation has two solutions
X1=-1, x2 = 4/5

You might be interested in

Help me plsssss I am failing in this class pls give me step by step

Vinvika [58]

Y=-3x+2 bc the line is going down so it’s negative and the y intercept is 2

5 0

3 years ago

Read 2 more answers

Kendall caught some fish two weeks ago. This amount is three less than twice the amount he caught last week.

Alchen [17]

Answer:

let Amount of fish =X

Amount is three less than twice the amount

2X - 3

Kendall caught fish = 27

Equation is

2X - 3 =27

Step-by-step explanation:

5 0

3 years ago

Factor x3 + x2 + x + 1 by grouping. What is the resulting expression?

Svet_ta [14]

X^3 +x^2 +x +1 = x^2(x +1) + x +1 = (x^2 +1)(x +1)

hope helped

8 0

3 years ago

Read 2 more answers

An equailateral triangle has a height of 52cm.Determine the length of each side to the nearest hundredth of a centimeter

neonofarm [45]

Each side is 52 cm. because equilateral triangles have equal lengths on each side. <span />

4 0

4 years ago

Read 2 more answers

With one method of a procedure called acceptance sampling, a sample of items is randomly selected without replacement and the en

zysi [14]

Answer:

0.7755

Step-by-step explanation:

If 120 CDs are defective, the number of non-defective CDs in the batch is:

$n=1950-120\\n=1830$

In order for the batch to be accepted, all of the 4 CDs in the sample must not be defective, the probability of that happening is:

$P=\frac{1830}{1950}*\frac{1829}{1949} *\frac{1828}{1948} *\frac{1827}{1947}\\P=0.7755$

The probability that the entire batch will be accepted is 0.7755.

4 0

3 years ago