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ser-zykov [4K]
3 years ago
12

14. All phone numbers consist of a three-digit area code, a three-digit exchange, and then a four-digit number. A town uses the

587 area code and the exchange 355; for example, 587-355-1234. How many different phone numbers are possible in this town under the following
conditions?

a) At least one digit repeats in the last four digits of the phone number.
Mathematics
1 answer:
Oliga [24]3 years ago
3 0

ANSWER

9000

=  1 X 1 X 9 X 10 3 = 9000

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The graph of a system of equations with the same slope and the same y-intercepts will have no solutions.
Rasek [7]
If 2 equations have the same y-intercept, they are overlapping, which means they have infinite solutions. So there is no way that 2 equations with the same y-intercept will have no solution. Thus your answer is: C)Never. 
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3 years ago
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If f(x) = x-1/3 and g(x) = 3x+1 what is (fog)(x)
marin [14]

Answer:

if you meant  f(x) = (x - 1) /3    then   f (g(x) ) = x

of if you meant  f(x) = x - (1/3) then  f(g (x)) =   3x + 2/3

Step-by-step explanation:

f(x) = x-1/3 and g(x) = 3x+1 what is (fog)(x)

f ( g(x) ) =  (3x + 1)  - (1/3) =   3x  + 2/3

Or

if you meant  f(x) = (x - 1) /3    then   f (g(x) ) = x

of if you meant  f(x) = x - (1/3) then  f(g (x)) =   3x + 2/3

3 0
3 years ago
The point A(0,3) and point B(4,19) lie on the line L.<br> Find the equation of line L
IRISSAK [1]

Answer:  The equation is   y = 4x+3

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========================================================

Explanation:

Let's start off by finding the slope.

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The slope is 4.

The y intercept is 3 because of the point (0,3)

We go from y = mx+b to y = 4x+3

m = slope

b = y intercept

---------------

Check:

Plug in x = 0 and we should get to y = 3

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y = 4(0)+3

y = 0+3

y = 3

That works out. Now try x = 4. It should lead to y = 19

y = 4x+3

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y = 19

The answer is confirmed.

4 0
2 years ago
Which number or numbers appear to have only one line of symmetry
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3 (horizontally) I do not think it is easy to explain this answer.
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