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Butoxors [25]
3 years ago
10

Find the slope from the table

Mathematics
1 answer:
Sedaia [141]3 years ago
4 0

Answer:

-6

Step-by-step explanation:

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On the first part of her trip Natalie rode her bike 16 miles and on the second part of the trip she rode her bike 42 miles. Her
-BARSIC- [3]

Answer:

14 mph   ( average speed during the second part of the trip )

Step-by-step explanation:

Let´s call  "x"  the average speed during the first part then

t = 5 hours

t  =  t₁  +  t₂        t₁   and  t₂   times during part 1 and 2 respectively

l = t*v           (  distance is speed by time )      t =  l/v

First part

t₁  = 16/x        and      t₂  = 42 / ( x + 6)

Then

t =   5   =  16/x   +   42 /(x + 6)

5 = [ 16 * ( x  +  6 ) +  42 * x ] / x* ( x + 6 )

5 *x * ( x + 6 )  =  16*x  + 96 +  42 x

5*x² + 30*x  - 58*x - 96  =  0

5*x²  -  28*x  -  96  =  0

We obtained a second degree equation, we will solve for x and dismiss any negative root since negative time has not sense

x₁,₂  =   [28 ± √ (28)² + 1920  ] / 10

x₁,₂  = ( 28  ± √2704 )/ 10

x₁  = 28  -  52 /10        we dismiss that root

x₂  = 80/10

x₂  =  8 mph       average speed during the first part, and the average speed in the second part was 6 more miles than in the firsst part. then the average spedd dring the scond part was 8 + 6 = 14 mph

6 0
3 years ago
-<img src="https://tex.z-dn.net/?f=%5Csqr%5Csqrt4-x%20%2B%5Csqrt%7B4-x" id="TexFormula1" title="\sqr\sqrt4-x +\sqrt{4-x" alt="\s
tankabanditka [31]

-2-x+\sqrt{-x+4}

8 0
3 years ago
Evaluate each expression if a = 6, b = 3, and c = 2.
My name is Ann [436]

Answer:

1. 18

2. 6

3. ?

4. 3

5. 4

6. 1

7. 5

Step-by-step explanation:

1. 6 x 3 = 18

2. 2 + 4 = 6

3. ( I cant read the problem)

4. 6 - 3 = 3

5. 2 x 2 = 4

6. 3 ÷ 3 = 1

7. 6 - 1 = 5

8. 6 + 2 = 8

7 0
3 years ago
What is the concentration of H+ ions at a pH = 2?
cestrela7 [59]

Answer:

0.01

0.000001

10,000

Step-by-step explanation:

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5 0
2 years ago
70% of the hundred students in the Middle School cafeteria brought their lunch some of the students bought their lunch these the
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70 × 60 =4200 students at Maine Middle School
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3 years ago
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