3 years ago

how many phone numbers are possible for the form ABC-XXXX? A is restricted to numbers 3-9 B,C and x can be any digit 1-9.

Mathematics

1 answer:

lakkis [162]3 years ago

7 0

I have no idea but i have a friend ill send over that is good at this stuff

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Brainiiest

german

Do -4 times 3.2 and then do the same thing plzzz help me with a question now plzzz I all give you 100 points

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3 years ago

What is the equation of a circle with its center at (10,−4) and a radius of 2?

Dmitrij [34]

Equation of circle
(x-h)^2 + (y-k)^2 = r^2
=> (x-10)^2 + (y+4)^2 = 4 is the answer

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3 years ago

A 10-foot ladder is leaning against a tree. The bottom of the ladder is 4 feet away from the bottom of the tree. Approximately h

strojnjashka [21]

Answer:

Step-by-step explanation:

If we were to draw a horizontal line from the bottom of the ladder to the bottom of the tree and then draw a vertical line from the bottom of the tree to the top of the ladder, we'd get a right triangle with legs as the distance between the bottom of the tree and the bottom of the ladder and the height of the ladder, and the hypotenuse is the length.

Here, we know the hypotenuse is 10 feet and that the bottom of the ladder is 4 feet away from the bottom of the tree, so use the Pythagorean Theorem to find the height:

h = $\sqrt{10^2-4^2} =\sqrt{84}$ ≈ 9.2 feet