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GenaCL600 [577]
3 years ago
9

Debbie is 5 years older than

Mathematics
1 answer:
vovikov84 [41]3 years ago
6 0

Answer:

Susan is 3 years  and Debbie is 8 years old. after 2 years Susan will be 5 Years and Debbie will be 10 years old

Step-by-step explanation:

let the present age of Susan be x years then Debbie is x+5 years

in 2 years

x +2 = x+5+2/2

x+2=x+7/2

2x +4 = x+7

x=3

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What is the slope of the line that contains these points?
Liono4ka [1.6K]

Answer:

m=-3/7

Step-by-step explanation:

(-4,2), (-3,5)

x1  y1   x2 y2

m=<u>y2-y1</u>

     x2-x1

m=<u>5-2</u>

    -3-4

m=<u>3</u>

   -7

m=-3/7

3 0
3 years ago
X. F(x)
Mkey [24]

Answer:

  • A.  There is a line symmetry at x=1.5
  • D.  There are x- intercepts at (-1,0) and (4,0)

Step-by-step explanation:

The average of x-coordinates corresponding to the same F(x) value is 1.5. That is ...

  (-2+5)/2 = (-1+4)/2 = (0+3)/2 = 1.5

The values in the table appear to be symmetrical about x=1.5, so that is a line of symmetry.

__

The x-intercept points are those points where F(x) = 0: (-1, 0) and (4, 0).

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The y-intercept is (0, -4), not (-4, 0).

On the interval [0, 5] the function is both decreasing and increasing.

3 0
3 years ago
To find the ______ you put all numbers in order from least to greatest and then take
kotegsom [21]

Answer:

average is the answer.

6 0
4 years ago
Show all work to write the equations of the lines, representing the following conditions, in the form y = mx + b, where m is the
natima [27]
4x - 3y - 7 = 0
-3y = -4x + 7
y = 4/3x - 7/3....slope here is 4/3

A. a parallel line will have the same slope

y = mx + b
slope(m) = 4/3
(-2,1)...x = -2 and y = 1
sub and find b, the y int
1 = 4/3(-2) + b
1 = -8/3 + b
1 + 8/3 = b
3/3 + 8/3 = b
11/3 = b

so ur parallel line is : y = 4/3x + 11/3

B. A perpendicular line will have a negative reciprocal slope. To get the negative reciprocal of a number, u flip the number and change the sign. So our perpendicular line will need a slope of -3/4

y = mx + b
slope(m) = -3/4
(-2,1)...x = -2 and y = 1
sub and find b, the y int
1 = -3/4(-2) + b
1 = 3/2 + b
1 - 3/2 = b
2/2 - 3/2 = b
-1/2 = b

so ur perpendicular equation is : y = -3/4x - 1/2
8 0
3 years ago
A library checks out four fiction books and two non fiction books an hour.How many times more fictions books do they check out t
astraxan [27]

Answer: 2

Step-by-step explanation:

All you need to do is subtract

4-2=2

8 0
4 years ago
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