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astraxan [27]
3 years ago
15

4.30 makeup;40% discount;6%tax

Mathematics
1 answer:
Butoxors [25]3 years ago
5 0
Ok a 40% discount of $4.30 is $1.75. 6% discount of $4.30 is $.258 which is $0.26. so its $2.01

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25% of the items were on sale. There were 120 items How many were on sale?
Liono4ka [1.6K]
There were 30 items on sale. Hope this helps and please give Brainliest!
8 0
4 years ago
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If a and B are the zeros of the quadratic polynomial f(x) = x2- 5x + 4 find the value of 1/a+1/b-2ab
bearhunter [10]

Answer:

<h2>-27/4</h2>

Step-by-step explanation:

Given the quadratic polynomial given as g(x) = x²- 5x + 4, the zeros of the quadratic polynomial occurs at g(x) = 0 such that x²- 5x + 4 = 0.

Factorizing the resulting equation to get the roots

x²- 5x + 4 = 0

(x²- x)-(4 x + 4) = 0

x(x-1)-4(x-1) = 0

(x-1)(x-4) = 0

x-1 = 0 and x-4 = 0

x = 1 and x = 4

Since a and b are known to be the root then we can say a = 1 and b =4

Substituting the given values into the equation  1/a+1/b-2 ab , we will have;

= 1/1 + 1/4 - 2*1*4

= 1 + 1/4 - 8

= 5/4 - 8

Find the Lowest common multiple

= (5-32)/4

= -27/4

<em>Hence the required value is -27/4</em>

5 0
4 years ago
How to solve 2x-y=17;x-y=10
Nataliya [291]
The answer is that y is equal to -3 and x is equal to 7 
2x-y=17
-2(x-y)=10 )
--------------
2x-y=17
-2x+2y=-20
----------------
y=-3

x-y=10 
x-(-3)=10
x+3=10
 -3   -3
----------
x=7



8 0
3 years ago
Explain the steps you would take to write 36/10 as a decimal
Feliz [49]
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3 0
3 years ago
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X-intercept: 3<br> y-intercept: 2
Sunny_sXe [5.5K]

Answer:

y = -2/3x + 2

Step-by-step explanation:

<em>Hey there!</em>

<em />

Well since we already got the y-intercept to find slope we'll use the points,

(3,0) and (0,2).

Formula: \frac{y^2 - y^1}{x^2 - x^1}

Plug in the given points,

\frac{2 - 0}{0 - 3}

Slope = -2/3

Slope-intercept: y = -2/3x + 2

<em>Hope this helps :)</em>

8 0
4 years ago
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