3 years ago

(-3,1) (-17, 2) find the slope

Mathematics

1 answer:

shepuryov [24]3 years ago

4 0

The answer is m= -1/14

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A little boy saved nickels and dimes. He had 8 more nickels than dimes. The total of his money was $1.45. How many nickels and h

gladu [14]

N=8+d
10d+5n=145
divide 2nd equaiton by 5 to make nicer and easier
2d+n=29

subsitute 8+d for n in 2nd equation
2d+8+d=29
3d+8=29
minus 8 both sides
3d=21
divide by 3
d=7
sub back
n=8+d
n=8+7
n=15

15 nickles and 7 dimes

7 0

3 years ago

If the Pacific plate moves around 5cm a year how long will it take Los Angeles to move one kilometer?

mr_godi [17]

We need to work with the same units, so first, we convert 1 km to cm.

1 km = 1000 m
1 m = 100 cm
1 km = 100,000 cm

Now we divide 100,000 cm by 5 cm.

$\dfrac{100,000~cm}{5~cm} = 20,000$

Answer: It will take 20,000 years.

7 0

3 years ago

Which expression is equivalent to 4+2(1+3x)?

Likurg_2 [28]

Answer:

6+18x

Step-by-step explanation:

=6(1+3x)

=6×1+6×3x

=6+18x

7 0

3 years ago

Will mark brainliest if right and show your work...

skelet666 [1.2K]

(9x^4-13x^3-x-7)+(7x^3-2x+1)

Sort the terms by their powers, as x's with the same powers can be added together:

9x^4

-13x^3 + 7x^3 = -6x^3

-x - 2x = -3x

-7 +1 = -6

5 0

4 years ago

Write the equation of the line that passes through (−2, 6) and (2, 14) in slope-intercept form. (2 points)

melisa1 [442]

Answer:

$y = 4x + 14$

Step-by-step explanation:

Equation of a line is y = mx + c

where

m is the slope

c is the y intercept

To find the equation we must first find the slope of the line

Slope of the line using points (−2, 6) and (2, 14) is

$m = \frac{14 - 6}{2 + 2} = \frac{8}{2} = 4$

Now we use the slope and any of the points to find the equation of the line.

Equation of the line using point ( - 2, 6) and slope 4 is

$y - 6 = 4(x + 2) \\ y - 6 = 4x + 8 \\ y = 4x + 8 + 6$

We have the final answer as

$y = 4x + 14$

Hope this helps you

8 0

4 years ago