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Bingel [31]
3 years ago
14

Working aswell please​

Mathematics
1 answer:
larisa [96]3 years ago
5 0

Answer:

23

Step-by-step explanation:

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The factorization of x2 + 3x – 4 is modeled with algebra tiles.
neonofarm [45]

The quadratic trinomial can be factor using the following formula:

ax^2+bx+c=a(x-x_1)(x-x_2), \text{ where } x_1,\ x_2 \text{ are trinomial roots}.

1. For the quadratic trinomial x^2 + 3x - 4 find the roots:

D=3^2-4\cdot (-4)=9+16=25,\ \sqrt{D}=\sqrt{25} =5,\\  \\ x_1= \dfrac{-3-5}{2} =-\dfrac{8}{2}=-4,\ x_2=\dfrac{-3+5}{2} =\dfrac{2}{2}=1.

2. The factoring form of trinomial is

x^2+3x-4=(x+4)(x-1).

3. The factors are x+4 and x-1

Answer: correct choice is C.

6 0
3 years ago
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Evaluate algebraic expressions 6th grade<br> 1.5 + y2 when y=6
den301095 [7]

If y=6 then y2 equals 36 because 6 times 6 is 36 and 36+1.5 is 37.5

7 0
3 years ago
The sum of two numbers is 8,79,245. if one of them is 2,35,678, find the other number.
murzikaleks [220]
643,567

235678+643567=879245
5 0
3 years ago
What is 12 *8 +12*4
Ilya [14]

Answer:

144

Step-by-step explanation:

12*8=96

12*4=48

96+48=144

4 0
3 years ago
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Which set of values could be from a direct proportion?
vampirchik [111]

Answer:

The value of k remains constant for table 2

Step-by-step explanation:

Given tables of X values and Y values

To find which tables show the property of direct proportional:

Since Y is direct proportion to X

We write,

y=kx     [Equation]

where k is constant of proportion.

Therefore, If the value of k remains constant for any table then, that table shows a direct proportion between y and x values.

For first table :

Now,

when x=1, y=3

Putting into Equation

y=kx

3=k(1)

k=3

Similarly, other calculations are carried out and put it into the form of a table

Note: Figure show tables of given and their respective k values.

Thus, the value of k remains constant for table 2

7 0
3 years ago
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