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irina [24]
2 years ago
13

gia got some books from the library yesterday. she got five books after returning three. Gia now has six books. how many library

books did Gia begin with?
Mathematics
2 answers:
larisa [96]2 years ago
5 0
Gia began with four books
Phantasy [73]2 years ago
3 0

Answer:

Gia started with 4 books.

Step-by-step explanation:

Let Gia got B books from the library yesterday.

She got five books after returning three, so the expression for the books will be (B - 3 + 5).

Gia now has number of books = 6

Therefore, The equation will be

(B - 3 + 5) = 6

B + 2 = 6

B + 2 - 2 = 6 - 2

B = 4 Books

Therefore, Gia started with 4 books.

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Susan and ronald dugan agreed upon the price of 256,000 for their new home. They plan to make 30 percent down payment and financ
Eduardwww [97]

Answer:

The total amount to be paid for new home is $838,014.72  

Step-by-step explanation:

Given as :

The price of the new house = $256,000

The down payment amount = 30% of house price

So, The down payment price =  30% of $256,000

i.e The down payment price =  \dfrac{30}{100} × 256000

Or, The down payment price = $76,800

Now, rest amount is finance

So, The finance Amount = p = $256000 - $76800 = $179,200

The rate of interest applied = r = 7.5%

The time period of finance = t = 20 years

Let The Amount after 20 years of finance = $A

Let The total amount to be paid for new home = $B

<u>Now, From Compound Interest </u>

Amount = Principal × (1+\dfrac{\textrm rate}{100})^{\textrm time}

Or, A = p × (1+\dfrac{\textrm r}{100})^{\textrm t}

Or, A = $179,200 × (1+\dfrac{\textrm 7.5}{100})^{\textrm 20}

Or, A = $179,200 × (1.075)^{\textrm 20}

Or, A = $179,200 × 4.24785

∴  A = $761,214.72

So,The Amount after 20 years of finance = A = $761,214.72

<u>Now, Again</u>

The total amount to be paid for new home = Down payment amount + The Amount after 20 years of finance

Or, B = $76,800 + A

Or, B = $76,800 + $761,214.72

Or, B = $838,014.72

So, The total amount to be paid for new home = B = $838,014.72

Hence, The total amount to be paid for new home is $838,014.72  Answer

7 0
2 years ago
For customers purchasing a refrigerator at a certain appliance store, let A be the event that the refrigerator was manufactured
kati45 [8]
The answers are the following:
<span><span><span>P(A)=0.75</span><span>
</span></span><span><span>P(B|A)=0.9
</span></span><span><span>P(B|<span>A′</span>)=0.8
</span></span><span><span>P(C|A∩B)=0.8
</span></span><span><span>P(C|A∩<span>B′</span>)=0.6
</span></span><span><span>P(C|<span>A′</span>∩B)=0.7
</span></span><span><span>P(C|<span>A′</span>∩<span>B′</span>)=0.3</span></span></span>
4 0
2 years ago
Three lottery tickets for first, second, and third prizes are drawn from a group of 40 tickets. find the number of sample points
ICE Princess25 [194]
40×39×38= 59280
so the sample space is 59280
7 0
2 years ago
Solve for x 3x−91&gt;−87 OR 21x−17&gt;25
klasskru [66]

Answer:

  x > 4/3

Step-by-step explanation:

The first inequality can be solved this way ...

  3x -91 > -87

  3x > 4 . . . . . . . add 91

  x > 4/3 . . . . . . divide by 3

__

The second inequality has solution ...

  21x -17 > 25

  21x > 42 . . . . . . add 17

  x > 2 . . . . . . . . . divide by 21

__

The solution set is the union of these overlapping solutions, so will be equal to the first solution:

  x > 4/3

5 0
2 years ago
Read 2 more answers
do you agree that the equation (x-4)²=9 can be solved both by factoring and extracting square roots? ​
zvonat [6]

Given parameters:

  Equation:

          (x-4)²=9

Problem, solve the equation by factoring and extracting the root

<u>Solution:</u>

    Given equation:

                  (x-4)²=9

         subtract 9 from both sides to equate to zero;

                (x-4)² - 9 = 0

                (x -4)² - 3² = 0

  Now, this is similar to the concept of difference of two squares;

          x² - y² = <em>(x + y)(x-y)</em>

                     

Here x  = x-4 and y = -3

  So input and solve;

              (x - 4 -3)(x - 4 -(-3)) = 0

              (x - 7)(x - 4+3) = 0

              (x -7)(x -1) = 0

S0,

             x - 7 = 0 or x-1 = 0

             x = 7 or 1

If we extract the square roots;

          (x-4)² = 9

         √(x-4)² = √9

              x - 4 = 3

              x  = 4 + 3 = 7; this is not the only solution to the problem

So we cannot solve it by extracting the square root.

7 0
2 years ago
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