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N76 [4]
4 years ago
5

HELP PLS

Mathematics
2 answers:
kiruha [24]4 years ago
8 0
-20 is the answer. Your welcome I might have gotten it wrong but at leAst I tried
jonny [76]4 years ago
3 0

Answer: -20

Step-by-step explanation:

if not sorry I tried. :(

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Can somebody help me
9966 [12]

Plot the intercepts:

y=-1

x=?

to find the x intercept, you dont solve the equation as it is solved in the slope-intercept form. instead, you simply plug in 0 for y:

0=1/4x-4

0=1/4x-4+4

4=1/4x

4/1/4=1/4x

1/4=0.25

x=16

revise:

y=(0, -1)

x=(16,0)

graph the slope for y=-1/2x-1: start from say point (0,-1)

graph the slope for y=1/4x-4: start from say point (16,0) ; you can just ise the intercept (0,-4) since the graph is diluted small...anyways

the points intersect at (4, -3) so thats the solution to the equations

NOTE: when graphing slopes that are negative either the numerator or the denominator can be graphed negative. so I graphed the first equation with the numerator as the positive and the denominator as the negative : rise= 1 ; run: -2. once i got to the end of the provided graph i started from the -1 y-intercept again and graphed the equation using: rise=-1; run=2

*graphing messes me up, too*

6 0
4 years ago
Does anyone know how to find x and y?? If so please help! Pictures would help too!!
finlep [7]

Answer:

y=13.3333...

x=6

Step-by-step explanation:

y=20/1.5

y=13.3

x=9/1.5

x=6

8 0
3 years ago
A piece of wood is 21 m long. How much piece of wood 07m 'long wood can be cut from it?​
liq [111]

Equation = 21/7=?

Revision: 7 x ? = 21

7+7+7 = 21

7 x 3 = 21

21/7 = 3

Answer = 3

8 0
3 years ago
if I drive 32783 miles in 138 days the car holds 15.8 gallons of gas how many gallons of gas did I buy?
blsea [12.9K]
It might have held 2,180.4 gallons of gas

8 0
4 years ago
- Use the functions f(x) = 4x + 3 and g(x) = 2x2 + 2 to answer parts (a)-(c).
mario62 [17]

9514 1404 393

Answer:

  a) f(x)

  b) g(x)

  c) for all values of x > 1, g(x) has a greater rate of change

Step-by-step explanation:

a) The rate of change of f(x) is the x-coefficient: 4. The average rate of change of g(x) on an interval can be found by dividing the change by the interval width. Here, the width of the interval of interest is 1-0 = 1, so the average rate of change is g(1) -g(0) = 4-2 = 2.

On the interval [0, 1], f(x) has the greater rate of change.

__

b) The interval [2, 3] also has a width of 1, so the rate of change of g(x) on that interval is g(3) -g(2) = 20 -10 = 10. This value is greater than 4, so ...

on the interval [2, 3], g(x) has the greater rate of change.

__

c) Part (b) demonstrates that g(x) will have a greater rate of change on some intervals. In fact, for any interval whose center is greater than x=1, g(x) will have a greater rate of change than f(x).

_____

In calculus terms, the rate of change of g(x) is g'(x) = 4x. This will be greater than 4 for any x > 1. The graph shows the rate of change is 4 at x=1, and is higher for x > 1. The average rate of change will be greater than 4 on any interval whose center is greater than x=1.

We can figure the average rate of change on the interval [a, b] as ...

  m = (g(b) -g(a))/(b -a)

  m = ((2b² +2) -(2a² +2))/(b -a) = 2(b² -a²)/(b-a) = 2(b+a)

For the average rate of change to exceed 4, the sum of the ends of the interval must exceed 2, which is to say the midpoint must exceed 1.

5 0
3 years ago
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