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3241004551 [841]
3 years ago
12

Hi:) anyone able to explain how to find the value of a? Thank you:)

Mathematics
2 answers:
11111nata11111 [884]3 years ago
8 0

Answer:

Step-by-step explanation:

The vaulu of A oh! I know that the vaulu of A is Z! Hope this helps! Please give me brailyest!?

andreev551 [17]3 years ago
5 0

Answer:

a=2

Step-by-step explanation:

Please see attached picture for full solution.

Method 1: Substitute x with another number, other than the numbers that you have already tried. Zero is a good number to work with :)

Then, subst. the values of b and c which you have already found into the equation. Then simplify to arrive at your answer.

Method 2: Notice that when you expand the right hand side, only a(x)({x}^{2}) can give you a x^{3}term. Hence, compare the coefficients of {x}^{3} on both sides. This method is quite safe since the value of a won't be affected in case the value of b and c is wrong.

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If Dave has 15 dollars and must spend 8 dollars of it on a book, then he will have 7 dollars left. If he then buys two of the same cards for his friends, the most he will be able to spend is half of 7 dollars for each of them, which will be 3 dollars and 50 cents. 
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2 years ago
What is the intersection of yhe sets A={2,3,5,7,11}and B={5,11,13,15,17}?
xxTIMURxx [149]

The intersection of two sets A and B is defined as the set composed by the elements appearing in both A and B.

So, the intersection is

A\cap B = \{5,11\}

Because all the other numbers do not belong to both sets:

  • 2, 3 and 7 belong to A alone
  • 13, 15 and 17 belong to B alone
  • 5 and 11 belong to both A and B
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2 years ago
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solniwko [45]

Answer:

945

Step-by-step explanation:

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2 years ago
. Two stacks of flashcards each contain a card with one of the digits 0-9 written on the card. What is the probability of drawin
gayaneshka [121]

1/5

Step-by-step explanation:

(2,6) = 4/20 = 1/5

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7 0
1 year ago
If the original square had a side length of
irina [24]

Answer:

Part a) The new rectangle labeled in the attached figure N 2

Part b) The diagram of the new rectangle with their areas  in the attached figure N 3, and the trinomial is x^{2} +11x+28

Part c) The area of the second rectangle is 54 in^2

Part d) see the explanation

Step-by-step explanation:

The complete question in the attached figure N 1

Part a) If the original square is shown below with side lengths marked with x, label the second diagram to represent the new rectangle constructed by increasing the sides as described above

we know that

The dimensions of the new rectangle will be

Length=(x+4)\ in

width=(x+7)\ in

The diagram of the new rectangle in the attached figure N 2

Part b) Label each portion of the second diagram with their areas in terms of x (when applicable) State the product of (x+4) and (x+7) as a trinomial

The diagram of the new rectangle with their areas  in the attached figure N 3

we have that

To find out the area of each portion, multiply its length by its width

A1=(x)(x)=x^{2}\ in^2

A2=(4)(x)=4x\ in^2

A3=(x)(7)=7x\ in^2

A4=(4)(7)=28\ in^2

The total area of the second rectangle is the sum of the four areas

A=A1+A2+A3+A4

State the product of (x+4) and (x+7) as a trinomial

(x+4)(x+7)=x^{2}+7x+4x+28=x^{2} +11x+28

Part c) If the original square had a side length of  x = 2 inches, then what is the area of the  second rectangle?

we know that

The area of the second rectangle is equal to

A=A1+A2+A3+A4

For x=2 in

substitute the value of x in the area of each portion

A1=(2)(2)=4\ in^2

A2=(4)(2)=8\ in^2

A3=(2)(7)=14\ in^2

A4=(4)(7)=28\ in^2

A=4+8+14+28

A=54\ in^2

Part d) Verify that the trinomial you found in Part b) has the same value as Part c) for x=2 in

We have that

The trinomial is

A(x)=x^{2} +11x+28

For x=2 in

substitute and solve for A(x)

A(2)=2^{2} +11(2)+28

A(2)=4 +22+28

A(2)=54\ in^2 ----> verified

therefore

The trinomial represent the total area of the second rectangle

7 0
3 years ago
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