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3 years ago

How many 4-digit numbers can be created from the digits 6, 4, 2, 9, 7 and 1 without repeating any?

1 answer:

8 0

Total sets of 4-digits = 6
Total 4-digit numbers formed by one set of number = 4
So, total numbers that can be formed = 6 × 4 = 24

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Help easy math question!!!

aleksandrvk [35]

Answer:

16 feet

Step-by-step explanation:

This ladder and building creates a right triangle with 34 as the hypotenuse and 30 as a side. the Pythagorean theorem says that a^2 + b^2 = c^2 so 900 + b^2 = 1156. b^2 = 256, square root both sides and you get b = 16

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3 years ago

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Given 2x² = -8, x is a. -2 b. 2 c. 2i or -2i d. 4i or -4i

marishachu [46]

Your answer is (a) because 4 times 2 is 8 but since it's negative 2 it's negative 8

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3 years ago

The line CD passes through the points C (2, -1) and D (1, 1). Which of the

inn [45]

Answer:

The equation of the straight line in point - slope form

y +1 = -2 ( x-2)

Step-by-step explanation:

Step(i):-

Given points are C( 2,-1) and D(1,1)

Slope of the line

$m = \frac{y_{2}-y_{1} }{x_{2}-x_{1} } = \frac{1-(-1)}{1-2} = \frac{2}{-1} = -2$

m = -2

Step(ii):-

Equation of the straight line passing through the point ( 2,-1) and having slope

m =-2

y - y₁ = m ( x- x₁)

y - (-1) = -2 ( x-2)

y +1 = -2 ( x-2)

Final answer:-

The equation of the straight line

y +1 = -2 ( x-2)

3 0

2 years ago

Find the length of the darkened arc. leave your answer in terms of

VashaNatasha [74]

Answer:

Step-by-step explanation:

you can split nine into three

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2 years ago

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Which expression is equivalent to (5^4)^2 A. 25^8 B. 20^2 C. 5^8 D. 5^6

Yuliya22 [10]

Answer:

C. 5^8

to raise a power to another power, multiply the exponents

then multiply thr numbers

then u get 5^8

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3 years ago