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san4es73 [151]
3 years ago
7

A secret code must consist of three capital letters followed by a digit. Letters cannot be repeated. How many secret codes are p

ossible?
Mathematics
2 answers:
just olya [345]3 years ago
7 0
The answer is 156,000.
Readme [11.4K]3 years ago
5 0
There are 36 values (26 letters of the alphabet + all numbers 0-9) and four digits. If there are only 10 values and four digits there are 10,000 combinations. So multiple the value of that by 3.6 and you get your answer. 36,000
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Evaluate √7x(√x−7√7) please Show your Work thanks.
Veronika [31]

 expand by multiplying <span><span>√<span>7x</span></span>⋅<span>√x</span></span> and <span><span>√<span>7x</span></span>⋅7<span>√7</span></span> 

<span><span>√<span>7x</span></span><span>(<span>√x</span>−7<span>√7</span>)</span>=<span>√<span>7x</span></span>⋅<span>√x</span>−<span>√<span>7x</span></span>⋅7<span>√7</span></span>

<span>You can make√<span>7x</span></span> into <span><span>√7</span>⋅<span>√x</span></span>

<span><span>=<span>√7</span>⋅<span><span>√x</span>⋅<span>√x</span></span>−<span>√7</span>⋅<span>√x</span>⋅7⋅<span>√7</span></span><span>=<span>√7</span>⋅<span><span>(<span>√x</span>)</span>2</span>−<span><span>(<span>√7</span>)</span>2</span>⋅<span>√x</span>⋅7</span></span>

since squaring and square roots are opposite, they cancel

<span><span>=<span>√7</span>⋅x−7⋅<span>√x</span>⋅7</span>=x√7−49√x
I hope the square root symbols worked. I had to copy and paste from word. Hopefully this is what you needed!
</span>
8 0
3 years ago
Read 2 more answers
The high school soccer booster club sells tickets to the varsity matches for $4 for students and $8 for adults. The booster club
tangare [24]

Answer:(B)

Step-by-step explanation:

it is because for the people your final price was 200 you don't know how much money the people donated

8 0
3 years ago
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eimsori [14]

Answer:

The volume is 908 feet³

after rounding it is 900 feet³

Step-by-step explanation:

Radius of cone from fig. A = 2feet

Radius of cylinder from fig. B = 2feet

Radius of Hemisphere from fig. C = 3feet

Height of cone from Fig. A = 6 feet

Height of cylinder from fig. B = 10 feet

Length of cuboid = 12 feet

height of cuboid = 4feet

width of cuboid = 7feet !!

[ Refer to the attached file ]

7 0
3 years ago
Factorisation with this question, please help
charle [14.2K]

3( x - y )^2 - 2( x - y ) =

<em>(</em><em> </em><em>x</em><em> </em><em>-</em><em> </em><em>y</em><em> </em><em>)</em><em> </em>( 3( x - y) - 2 ) =

( x - y )( 3x - 3y - 2 )

8 0
3 years ago
Which best explains whether or not ABC = LMN?
Masja [62]

Answer:

If I've done it right the answer should be A, the figures are congruent because a 270 rotation about the origin a d a reflection of the x-axis

7 0
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