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3 years ago

Find the slope given the two points. (2, -6) and (2, 3)

Mathematics

2 answers:

kifflom [539]3 years ago

5 0

Answer: Undefined

The x coordinates are the same, so a vertical line forms. All vertical lines have undefined slopes.

We can see it through the slope formula

m = (y2-y1)/(x2-x1)

m = (3-(-6))/(2-2)

m = (3+6)/(2-2)

m = 9/0

We cannot divide by zero, so the result is undefined.

Oduvanchick [21]3 years ago

4 0

Answer:

0 (horizontal line)

Step-by-step explanation:

(2,-6) (2,3)

m= 3-(-6)/ 0= 9/0= 0

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Karen has $1.70 in coins. Karen has 8 coins, all of which are quarters or dimes.

Vilka [71]

Answer:

Karen has 6 quarters and 2 dimes

Step-by-step explanation:

Let

x ----> the number of quarter coins Karen has

y ----> the number of dimes coins Karen has

Remember that

$1\ quarter=\$0.25\\1\ dime=\$0.10$

we know that

Equation that represent the amount of coins Karen has

$x+y=8$

isolate the variable y

$y=8-x$ ----> equation A

Equation that represent the value of coins Karen has

$0.25x+0.10y=1.70$ ----> equation B

Solve the system of equations by substitution

substitute equation A in equation B

$0.25x+0.10(8-x)=1.70$

solve for x

$0.25x+0.80-0.10x=1.70$

$0.25x-0.10x=1.70-0.80$

$0.15x=0.90$

$x=6$

Find the value of y

$y=8-x$ ----> $y=8-6=2$

therefore

Karen has 6 quarters and 2 dimes

5 0

3 years ago

X - 4 = 12x + 7 - 7x

Otrada [13]

Answer:

Since you are to calculate the value of x, the first thing to do is to collect the like terms, i.e bring all the families of x together.

which implies : x -12x +7x = 7 + 4

-4x = 11

Divide both sides by -4

therefore : x = $\frac{-11}{4}$

Step-by-step explanation:

3 0

3 years ago

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What is 1 2/5x =7 because i really need help

astraxan [27]

(1 2/5)(x)=7

Simplify both sides of the equation.

7/5x=7

Multiply both sides by 5/7.

(5/7)*(7/5x)=(5/7)*(7)

x=5

3 0

3 years ago

A researcher wants to know if the average time in jail for robbery has increased from what it was when the average sentence was

kati45 [8]

At 95% confidence interval, the z score is 1.96. Using the formula:

Confidence Interval = x ± z s / sqrt (n)

where x is the average time served, s is standard deviation and n is number of samples

Confidence interval = 7.5 ± (1.96 * 3) / sqrt (400)

Confidence interval = 7.5 ± 0.294

Confidence interval = 7.206 to 7.794

5 0

4 years ago

Yah vertical stick of length 6M Casts a shadow 400 cm long on the ground at the same time a tower Casts a shadow 28 metre long u

levacccp [35]

Answer:

ur mom reminds me of my dad lol

Step-by-step explanation:

8 0

3 years ago

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