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Vesnalui [34]
4 years ago
12

Help me please ?!!!!

Mathematics
1 answer:
blondinia [14]4 years ago
4 0

Answer:

<em>The slope of the line is -1</em>

Step-by-step explanation:

<u>Slope of a Line</u>

Suppose we know a given line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated as follows:

\displaystyle m=\frac{y_2-y_1}{x_2-x_1}

From the table in the image, we select the points (1,4) (3,2). The slope is:

\displaystyle m=\frac{2-4}{3-1}=\frac{-2}{2}=-1

Now select two other points like (5,0) (7,-2)

\displaystyle m=\frac{-2-0}{7-5}=\frac{-2}{2}=-1

Following the same procedure with any other pair of points, we'll get the very same result:

The slope of the line is -1

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PLEASE SOMEONE HELP ME. I WILL BRAINLIEST YOU AND GIVE YOU POINTS.
almond37 [142]

Answer:

C).

Step-by-step explanation:

-3x+2 and[(-)(x^2+5x)

3x+2 and (-x^2+5x)

3x+2-x^2+5x

-x^2-8x+2

Hope this Helps :)

7 0
3 years ago
What can you do when the unit prices for two comparable items are listed using different units of measure?
Over [174]
When you have two unit prices for two comparable items, you have to convert one of the prices to the other one.
3 0
4 years ago
Read 2 more answers
Find the reciprocal of 1/5
ivanzaharov [21]

Answer:

Hey! The reciprocal of 1/5 is 5!

Hope this helps :)

~sofia

6 0
4 years ago
Researchers at the Centers for Disease Control and Prevention have been studying the decay pattern of a new virus with a decay r
koban [17]

The Researcher will find 69 viruses, because 231 viruses are decayed in 7 hours, if a virus with a decay rate of 19% per hour and they start with 300 viruses.

Step-by-step explanation:

The given is,

                     A new virus with a decay rate of 19% per hour  

                    They start with 300 viruses

Step:1

                  Formula to calculate the viruses at decay rate,

                                                  y = A(1-r)^{t}............................(1)

                 Where, y - No of viruses after given time

                             A - Viruses at initial stage

                              r - Decay rate

                              t - No. of hours

                 From the given,

                              A = 300

                               r = 19% per hour

                               t = 7 hours

                Equation (1) becomes,

                                            y = 300(1-0.19)^{7}

                                               = 300(0.81)^{7}

                                               = 300(0.228767)

                                               = 68.63

               Viruses of 7 hours ≅ 69 viruses

                                                     ( or )

Step:1

        For 1st hour,

          = (No.of viruses in hour) - (No,of viruses in last hour × Decay rate )

              = (300)-(300 × 0.19)

              = 300 - 57

              = 243

       For 2nd hour,

              = (243)-(243 × 0.19)

              = 243 - 46.17

              = 196.83

      For 3rd hour,

              = (196.83)-(196.83 × 0.19)

              = 196.83 - 37.39

              = 159.4323

       For 4th hour,

              = (159.4323)-(159.4323 × 0.19)

              = 159.4323 - 30.2921

              = 129.1402

      For 5th hour,

              = (129.1402)-(129.1402 × 0.19)

              = 129.1402 - 24.5366

              = 104.6035

     For 6th hour,

              = ( 104.6035)-( 104.6035 × 0.19)

              =  104.6035 - 19.8747

              = 84.7288

     For 7th hour,

              = (84.7288)-(84.7288 × 0.19)

              =  84.7288 - 16.0984

              = 68.63 viruses

Result:

          The Researcher will find 69 viruses, because 231 viruses are decayed in 7 hours, if a virus with a decay rate of 19% per hour and they start with 300 viruses.

7 0
3 years ago
Please help I will give brainlyiest fast please help fast
lana [24]

Answer:

  • A. 49.

Step-by-step explanation:

<u>Given equation:</u>

  • -11 2/3 * (-4 1/5)

<u>Simplify, then solve:</u>

  • -11 2/3 * (-4 1/5)
  • = -35/3 * (-21/5)
  • = \frac{-35 * (-21)}{3 * 5}
  • = 735/15
  • = 49.

Your answer is A. 49.

5 0
2 years ago
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