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sergij07 [2.7K]
4 years ago
10

How many telephone numbers are there in the 509 area code? Telephone numbers may not start with the number 0 or 1. They also mus

t not begin with 911 or 555. Do not consider other special circumstances.
Mathematics
1 answer:
Nata [24]4 years ago
5 0
7,999,998 is the number you are looking for
You might be interested in
What is the radius of a sphere which area is equal to the sum of the areas of four circles of radius 7?
antiseptic1488 [7]

Answer:

radius = 7 units

Step-by-step explanation:

Given:

Radius = 7 units

Find area of 4 circles:

1 circle = π (7)² = 49π units²

4 circles = 49π x 4 = 196π units²

Find radius of sphere:

4πr²  = 196π

r² = 49

r = 7

3 0
4 years ago
Find the value of x for which the lines a and b are parallel. answer : 23 20 2 19
Afina-wow [57]

Answer:

x=19

Step-by-step explanation:

These two angles are alternate interior angles and alternate interior angles are equal when the lines are parallel

148 = 7x+15

Subtract 15 from each side

148-15 =7x+15-15

133 = 7x

Divide by 7

133/7 = 7x/7

19 =x

4 0
3 years ago
State the x- and y-intercepts of the line with the equation y= -2x+4
grandymaker [24]

Answer:

x-intercept: (2,0)

y-intercept: (0,4)

Step-by-step explanation:

x-intercept: when y = 0

y = -2x + 4

0 = -2x + 4

x = 2

y-intercept: when x = 0

y = -2x + 4

y = -2(0) + 4

y = 4

8 0
3 years ago
A cube has a lateral area of 676 square feet.<br><br> What is the side length of the cube?
ryzh [129]

Answer:Cube has 4 lateral faces

4s² = 676 = 4 × 169

s² = 169

s = 13

your answer is 13

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
a sixth grade class of 12 boys and 24 girls consider this statement for every two boys there are 4 girls do you agree with the s
BaLLatris [955]
Yes it could be simplified to 2 girls every 1 boy but what you have is correct and I agree because if you divide each side by the corresponding number so 24/4 and 12/2 the both equal 6 so I agree
6 0
3 years ago
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