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3 years ago

Cuales son las soluciones de la siguiente ecuación x4-x3-7x2+x+6=0

Mathematics

1 answer:

Aloiza [94]3 years ago

7 0

Answer: x=−1 or x=1 or x=−2 or x=3

Step-by-step explanation: Step 1: Factor left side of equation.

(x+1)(x−1)(x+2)(x−3)=0

Step 2: Set factors equal to 0.

x+1=0 or x−1=0 or x+2=0 or x−3=0

x=−1 or x=1 or x=−2 or x=3

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If twice a number, added to 3 is divided by the number plus 7, the result is five thirds. Find the number.

Alina [70]

Answer: 26

Step-by-step explanation:

Let the number be n.

Now,

twice a number =>> 2n

added to 3 =>> 2n + 3

is divided by the number plus 7 is five thirds =>> (2n + 3) / (n + 7) = 5 / 3

(2n + 3) = (5 / 3) × (n + 7)

3 × (2n + 3) = 5 × (n + 7)

6n+9 = 5n + 35

6n - 5n = 35 - 9

n = 26

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3 years ago

Kristin earns $6.50 for every hour she babysits for the Overstreet family. Part A: Last Friday, Kristin babysat for 4.5 hours. H

soldier1979 [14.2K]

Answer: Part A: she would make 35.75

Part B: She would work for 7 hours

Step-by-step explanation:

Part A: $6.50+4.5=35.75

Part B: $45.50 dived by $6.50 would be 7. So she worked 7 hours

8 0

2 years ago

Several trays of danishes are ordered for a breakfast about 35% or cream filled there are four trays of 18 danishes on each tray

zvonat [6]

There are <em><u>25 danishes </u></em>contain cream filling

<h3>Further explanation</h3>

The percent is a number that shows a comparison of the number 100 or can be called per hundred (symbol%)

Formula used:

$\large{\boxed{\bold{Percentage\:=\:\frac{Total\:Section}{Total\:Amount}\:\times\:100\percent}}}$

Fractions either proper or mixed (consisting of numerators and denominators) or decimal forms

The percentage can be expressed as a decimal by moving the decimal point two places to the left

One way to convert proper fractions to percent forms is by multiplying the fraction by 100% or By changing the denominator to 100 because percent is the percent. Multiply the numerator and denominator with the same number

35% from Several trays of danishes are filled with cream

There are four (4) trays

18 danishes on each tray

Total danishes :

$\displaystyle =18\times 4\\\\=72\:danishes$

35% are filled with cream

$\displaystyle = \frac{35}{100}\times 72\\\\=\boxed{\bold{25.2}}$

Round up to<em><u> </u></em><em><u>25 danishes</u></em>

<h3>Learn more</h3>

find the percent

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The percent

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Keywords : cream filling, danishes, trays, breakfast

#LearnWithBrainly

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3 years ago

Gerogia is selling ice cream from her store at the beach. She opens the day with 500 servings of ice cream. Durning the day she

hram777 [196]

Answer:

325

Step-by-step explanation:

65% of 500 is 325

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2 years ago

27. Is the following relation a function?

Sunny_sXe [5.5K]

Answer:

Step-by-step explanation:

27 No

28.A

you are to read it maximum and minimum point on the vertical axis

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2 years ago

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