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likoan [24]
3 years ago
14

How do I write an algebraic expression for the amount of money (in dollars) in N nickels minus 7 dollars?

Mathematics
2 answers:
Dominik [7]3 years ago
8 0
Nickels are only worth $0.05 so:

m=0.05n-7
Nady [450]3 years ago
4 0
M=.05n-7 is my answer
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Find the value of the variable and YZ if Y is between X and Z
PIT_PIT [208]
If point Y is between points X and Z, then

XY + YZ = XZ

In words, the distance from X to Y, plus the distance from Y to Z, is equal to the distance from X to Z. (See the attached picture.)

So 6b + 8b = 175

Can you finish it?


8 0
4 years ago
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(4x + 4)(ax – 1) – x2 +4
Oksana_A [137]

Answer:

b=-3

Step-by-step explanation:

If the expression simplifies to bx that means the x^{2} terms and the constant terms must be cancel out.

Simplify it first.

(4x+4)(ax-1)-x^{2} +4\\=(4ax^{2} -4x+4ax-4)-x^{2} +4\\=4ax^{2} -x^{2} -4x+4ax-4+4\\=4ax^{2} -x^{2} -4x+4ax

We know –4 + 4 will cancel out. If we simplify this expression to only an x term, then the x^{2} terms should be cancelled. Therefore, we say that 4ax^2 – x^2 = 0.

4ax^{2} -x^{2} =0\\x^{2} (4a-1)=0\\4a-1=0\\4a=1\\a=\frac{1}{4}

If we put a = ¼, then we can find the value of b:

=4(\frac{1}{4} )x^{2} -x^{2} -4x+4(\frac{1}{4} )x\\=x^{2} -x^{2} -4x+x\\ (cancel out x^{2} terms)\\

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bx=-3x\\      if the  expression is equivalent to bx

Therefore, b = –3.

8 0
3 years ago
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yan [13]

Answer:

Correct option: A -> Horizontal or vertical reflection

Step-by-step explanation:

We can observe that the value of x in f(x) gives a value that is the same value we have in g(x) with the value -x.

That is, x = 1 in f(x) gives the same result as x = -1 in g(x)

So this means that these functions are a reflex of each other in relation to the y-axis, as the x values of one have the same result as (-x) values for the other one.

So the correct option is A: Horizontal or vertical reflection

(It is a horizontal reflection)

6 0
3 years ago
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Gwar [14]

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The total trip was 280*2 (the trip to perry and then to come back home)

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What is 6 over 15 in decimal and percent conversions
Sladkaya [172]

6\15=2\5=0,4=40%

.....................

8 0
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