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attashe74 [19]
2 years ago
15

Nancy bought a mobile phone marked at 720$ at a discount of 20 percent and she had to pay 5 percent tax. If Nancy had to put 20

percent of what she had to pay including tax as a deposit, how much money did she have to pay for the deposit?
Mathematics
1 answer:
GenaCL600 [577]2 years ago
3 0

Answer:

$120.96

Step-by-step explanation:

If there is a 20% discount, she would pay 80% of the price

o.80 x $720 = $576

If there is a tax of 5%, the price she pays increases by 5%

1.05 x 576 = 604.80

If she pays 20% deposit, she would pay

0.2 x 604.80 = $120.96

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Some investments in the stock market have earned 10% annually. At this rate, earning can be found using the formula A=p(1.10)n,
GalinKa [24]

Answer:

<em>c. 13.899.79</em>

Step-by-step explanation:

<u>Exponential function </u>

Two variables y and x have an exponential relation if  

y=Ce^{kx}

where C and k are real numbers. Many natural phenomena are modeled by using exponentials, finance included, where the growing of the investments can be computed through the use of the exponential function

The situation described in the question is modeled as

A=p1.1^{n}

being A is the total value of the investment, p is the initial value of the investment, and n is the number of years the money is invested. We know p=2,500 and n=18, so we compute A

A=(2,500)1.1^{18}

A=$13,899.79

Answer: c. 13.899.79

5 0
3 years ago
At the state fair,
Julli [10]

Answer:

Yes

Step-by-step explanation:

Billy is 4'7

138 centimeters in feet is 4'5

sp billy is 2 inches over the requirment.

6 0
2 years ago
Can someone help me please, explain in your own words. I'll give brainliest to the best and correct answer. Thank you (:
Elanso [62]
A) To factor a quadratic equation, standard form is the better form to use because it is easier to pull out a common factor from. 

b) To graph a parabola, it is better to use vertex form so that you will know what point to graph as the vertex of the parabola. 

c) To identify the vertex, maximum and minimum, it is better to use vertex form because the vertex form will give the values of the coordinates for the vertex. Then, you can use the equation to find the mininmum or maximum. If the graph is negative, it will have a maximum because it points downward infinitely. If the equation is positive, the graph will have a minimum because the graph points upward infinitely.

d) Standard form is easier to use when trying to solve using the quadratic formula because  it is easier to see what the coeffiecnts and constants are to plug in for a b and c. 
6 0
3 years ago
ᵂᴿᴵᵀᴱ ᴱᴬᶜᴴ ᶠᴿᴬᶜᵀᴵᴼᴺ ᴼᴿ ᴹᴵˣᴱᴰ ᴺᵁᴹᴮᴱᴿ ᴬˢ ᴬ ᴰᴱᶜᴵᴹᴬᴸ!!
Contact [7]

Answer:

3. \displaystyle 4,12

2. \displaystyle \: \: \: \: \: - \\ 0,46

1. \displaystyle 0,875

Step-by-step explanation:

3. Every 25 is worth 4, and since 3 by 4 is 12, 3⁄25 gets set to ",12", then attach the <em>whole number</em> [4] to it, giving you 4,12.

2. Every 15 is worth 6⅔, and since 7 by 6⅔ is 46⅔, moving the decimal mark twice to the <em>left</em> will give you the above answer, in <em>bar</em><em> </em><em>notation</em>, since it is a repeated decimal.

1. Every 8 is worth 12½, and since 7 by 12½ is 87½ [87,5], moving the decimal mark twice to the <em>left</em><em> </em>will give you 0,875.

I am joyous to assist you anytime.

5 0
3 years ago
Solve for x. −6&gt;−30−4x−6&gt;−30-4x enter the inequality in the first box.
Bogdan [553]
If you would like to solve -6 > -30 - 4x for x, you can do this using the following steps:

-6 > -30 - 4x
4x > -30 + 6
4x > -24      /4
x > -24/4
x > -6

The correct result would be x > -6.
5 0
3 years ago
Read 2 more answers
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