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3 years ago

A key code must contain 2 letters and 3 numbers

Mathematics

2 answers:

Alchen [17]3 years ago

7 0

26 choices for each letter, 10 for each number, do 26×26×10×10×10

d1i1m1o1n [39]3 years ago

5 0

26 letters {A; B; C; D;...;Z}

10 numbers {0; 1; 2; 3;...;9}

L-letter; N-number

code
LLNN
LNLN
LNNL
NNLL
NLNL
NLLN

26 · 26 · 10 · 10 · 6 = 135,200

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OleMash [197]

Answer:

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Step-by-step explanation:

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miskamm [114]

Simplify both sides of the equation

25d-14d+8d = 95

Simplify

19d = 95

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Enter the equation of the circle with C(5, -13) and radius r = 36.

Pavel [41]

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3 years ago

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A line contains (9,y) and (-6,3). It has slope 2/3, find y

koban [17]

The line contains (9,y) and (-6,3) Then y is 13

Solution:

Given that a line contains (9, y) and (-6, 3)

Slope of line is $\frac{2}{3}$

To find: y

The slope of line is given as:

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

$\text {Here }\left(x_{1}, y_{1}\right)=(9, y) \text { and }\left(x_{2}, y_{2}\right)=(-6,3)$

Substituting the values in formula,

$m=\frac{3-y}{-6-9}$

Substitute $m = \frac{2}{3}$

$\frac{2}{3}=\frac{3-y}{-6-9}$

2(-6 - 9) = 3(3 - y)

Multiplying the terms with terms inside bracket

-12 - 18 = 9 - 3y

Move the variable to one side

-30 = 9 - 3y

On solving we get,

3y = 30 + 9

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4 years ago

Find the surface area of a rectangular pyramid 9 cm 6 cm 6 cm

Zigmanuir [339]

Answer:

159.37 cm^3

Step-by-step explanation:

A=lw+l(w /2)^2+h^2+w*(l /2)^2+h^2=9·6+9·(6 /2)^2+6^2+6·(9 /2)^2+62≈159.37384cm^3

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4 years ago