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Anna71 [15]
3 years ago
6

Lily forgot the security code for her apartment building. the code is two different numbers followed by a letter. how many diffe

rent possible codes are ther?
Mathematics
1 answer:
umka21 [38]3 years ago
8 0
Assuming the keypad has all 26 letters and the numbers 1-9 there are 2106 possible codes

9x9x26=2106

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The Wing Station wants the average price of the lunch meal deals to be $8.
Anit [1.1K]

Answer:

The price of chicken wings need to be $7 for the average price of the lunch meal deals to be that.

Step-by-step explanation:

Please kindly check the attached files for explanation

8 0
3 years ago
What is:<br> <img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B4x%5E%7B2%7D%20-20x%2B25%20" id="TexFormula1" title=" \sqrt{4x^{2} -
Firdavs [7]

We are given :

\sqrt{4x^{2}-20x+25}

Step 1: factor the part inside square root

The function given inside square root is of quadratic form.

So let us try to factorise it using AC method.

Here A*C = 4*25 = 100

so we have to find factors of 100 that add up to give -20.

the two factors are -10 and -10.

Rewriting the function :

4x^{2} -20x+25

=4x^{2} -10x-10x+25

=2x(2x-5) - 5(2x-5)

=(2x-5)^{2}

Step 2:

Now we take square root of the factorised form

\sqrt{(2x-5)^2}

= 2x-5

Answer : (2x-5)

3 0
3 years ago
Calculate the value of 3a – 4b + 6c – 3d, when <br> a = 5 b = 4 c = 3 d = 2
Ne4ueva [31]

Answer:

3a – 4b + 6c – 3d

when a = 5 b = 4 c = 3 d = 2

the value

= 3×5 - 4×4 + 6×3 - 3×2

=15-16+18-6

=11

3 0
2 years ago
If x+y=10 find the value of y when x = 3
Reptile [31]
Just substitute in the number 3 for x then subtract 3 at both sides and youll have y=7
3 0
3 years ago
Y varies directly with x and y=8 when x=-5
ale4655 [162]

Answer:

Y=K×X...... equation

When,Y=8 and X=-5

To find the constant (K)

we substitute for K in the equation

8=K×-5

8=-5K divide both sides by -5

8÷-5=-5K÷-5

K=-1.6

7 0
3 years ago
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