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3 years ago

What is the slope of the line through the points (-2, -1) and (4, 3) as a fraction

Mathematics

1 answer:

xxMikexx [17]3 years ago

5 0

Answer:

slope = 2/3

it's originally 4/6 but it reduces to 2/3.

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Kendra ran 12 miles in 72 minutes. If the ratio of miles to minutes is constant, how many mor miles can she run in 90 minutes th

Lostsunrise [7]

Answer:

12 miles = 72 minutes

1/6 miles = 1 minute (divide both side by 72)

15 miles = 90 minutes (multiply both sides by 90)

Step-by-step explanation:

answer - 15 miles

8 0

3 years ago

Can somebody help me please.

olga55 [171]

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3 years ago

SIMPLIFY THE EXPRESSION 3(-6 + 2j)

Alinara [238K]

Answer:

-18 + 6j

Step-by-step explanation:

3 * -6 is -18

3 * 2j is 6j

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3 years ago

Joline is solving the equation 0 = x2 – 5x – 4 using the quadratic formula. Which value is the negative real number solution to

katen-ka-za [31]

Answer:

- 0.7

Step-by-step explanation:

We are given the general quadratic formula, as " $x = -b \frac{+}{-} \sqrt{(b^2-4ac)} / 2a$ . " This can be represented by two separate formula's, which will come in handy when determining the positive and negative roots of the equation ( and here we need the negative root ):

1 ) $x = - b+ ( \sqrt{b^2-4ac} ) / 2a$ ,

2 ) $x = - b- ( \sqrt{b^2-4ac} ) / 2a$

We know that a = 1, b = - 5, and c = - 4 from the equation " $0 = x^2 - 5x - 4$ " ( which can be rewritten in the form $0 = ax^2 + bx + c$ ). Therefore, simply plug in these values into the quadratic formula to receive two solutions:

$x = 5 + ( \sqrt{( - 5 )^2 - 4( 1 )( - 4 )} ) / 2( 1 ),\\x = 5 + ( \sqrt{25 + 16} ) / 2,\\x = 5 + \sqrt{41} / 2,\\x = ( About ) 5.7$ - This is our positive solution

__________

$x = 5 - ( \sqrt{( - 5 )^2 - 4( 1 )( - 4 )} ) / 2( 1 ),\\x = 5 - ( \sqrt{25 + 16} ) / 2,\\x = 5 - \sqrt{41} / 2,\\x = ( About ) - 0.7$ - And this is our negative solution

You can see that - 0.7 is the negative real number solution to Joline's quadratic equation!

4 0

3 years ago

There are 40 coins in a roll of quarters. The change machine at the local arcade holds 320 rolls of quarters. How many quarters

erica [24]

Answer:

C, 12,800

Step-by-step explanation:

40 x 320 = 12,800

3 0

3 years ago

What is the slope of the line through the points (-2, -1) and (4, 3) as a fraction​

What is the slope of the line through the points (-2, -1) and (4, 3) as a fraction