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3 years ago

NEED THE ANSWER ASAP PLEASE

Mathematics

2 answers:

timurjin [86]3 years ago

8 0

Answer:

$2$

Step-by-step explanation:

$\frac{y1 - y2}{x1 - x2} \\ \frac{2 - 6}{ - 5 - ( - 3)} \\ \frac{ - 4}{ - 5 + 3} \\ \frac{ - 4}{ - 2} \\ = 2$

tatiyna3 years ago

6 0

So the right answer is 2

look at the attached picture

hope it will help u...

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Solve equation, check for extraneous solutions

fiasKO [112]

Start with

$1=\dfrac{1}{n^2}+\dfrac{n^2-4n-5}{3n^2}$

We observe that both fractions are not defined if $n=0$ . So, we will assume $n \neq 0$ .

We multiply both numerator and denominator of the first fraction by 3 and we sum the two fractions:

$1=\dfrac{3}{3n^2}+\dfrac{n^2-4n-5}{3n^2} = \dfrac{n^2-4n-2}{3n^2}$

We multiply both sides by $3n^2$ :

$n^2-4n-2=3n^2$

We move everything to one side and solve the quadratic equation:

$2n^2+4n+2=0 \iff 2(n^2+2n+1)=0 \iff 2(n+1)^2=0 \iff n+1=0 \iff n=-1$

We check the solution:

$1=\dfrac{1}{1}+\dfrac{1+4-5}{3} \iff 1 = 1+0$

which is true

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3 years ago

What two numbers multiply to -49 and add to +6

Zina [86]

I don’t think there is a number that does both of those, the factors of 49 are 1, 7, and 49

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3 years ago

Between with pair of numbers is the exact product of 379 and 8

VikaD [51]

Answer:

Step-by-step explanation:

379 is a prime number. Only 2 numbers will divide into it. 1 and 379

So you could do this

379 * 8 = 3032

(379 * 2 ) * 4 = 758 * 4 = 3032

(379 * 4 ) * 2 = 1516 * 2 = 3032

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3 years ago

An athlete plains to run 3 miles. Each lap around th school yard is 3/7 miles how many laps will the athlete run

kati45 [8]

Answer: 7 laps

Step-by-step explanation:

The athlete planned to run 3 miles

1 lap = 3/7 miles

x laps = 3 miles

by proportion :

x × 3/7miles = 3 miles

x = 3 ÷ 3/7

x = 3 x 7/3

x = 7

Therefore: the athlete will run 7 laps

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3 years ago

Find the radius of a circle if it’s circumference is numerically equal to its area

kotykmax [81]

Answer:

Step-by-step explanation:

hello :

if : r the radius ( r ≠0)

the circumference is : 2πr

the area is : πr²

so : πr² = 2πr

simplify by : r π you have : r=2

5 0

2 years ago