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rjkz [21]
3 years ago
11

Simplify completely quantity 7 x squared plus 11 x minus 6 all over quantity 7 x squared minus 10 x plus 3.

Mathematics
2 answers:
GREYUIT [131]3 years ago
8 0
     7x^2 + 11x - 6
--------------------------
    7x^2 - 10x + 3

        (7x - 3)(x + 2)
=  -----------------------
        (7x - 3)(x  - 1)
             
        x + 2
=  --------------
        x  - 1

answer is 
<span>
quantity x plus 2 over quantity x minus 1</span>
lawyer [7]3 years ago
7 0

Answer:

\frac{(x-\frac{3}{7})(x+2)} {(x+\frac{2}{7})(x-1)}

Explanation:

We have been given the expression\frac{7x^2+11x-6}{7x^2-10x+3}

given two expressions are quadratic

Using the formula to solve the quadratic equation is

D=b^2-4ac

Now, to solve the equation for x where

x=\frac{-b\pm\sqrt{D}} {2a}

general quadratic equation is ax^2+bx+c

Comparing the numerator and denominator with general quadratic expression we will get

a=7,b=11,c=-6 in numerator

And a=7,b= -10,c=3 in denominator

And after substituting the values we will get

D=289 for numerator

and x=\frac{-11\pm17}{14} \\\\\Rightarrow\frac{3}{7} ,-2

And D=16 in denominator

and x=\frac{-(-10)\pm4}{14} \\\\\Rightarrow\frac{-2}{7} ,1

finally we will get \frac{(x-\frac{3}{7})(x+2)} {(x+\frac{2}{7})(x-1)}


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What is f(-3) for the function f(a)=-2a2-5a+4?
posledela

Answer:

-25

Step-by-step explanation:

2a² - 5a + 4, for f(-3)

2(-3)² -5(-3)+4

2*(-27)+15+4

-54+19

= -25

4 0
3 years ago
Which of these shapes have the same perimeter
Snezhnost [94]

Answer:

A) B and C

Step-by-step explanation:

To find the perimeter, add up the lengths of all the sides.

For shape A: 16+16+1+1= 34

For shape B: 8+8+2+2= 20

For shape C: 5+5+5+5= 20

Shapes B and C both have a perimeter of 20. The answer is A, B and C.

I hope this helps!

___________________________________________________________

The other answer is not correct because they are finding the area of the rectangles.

5 0
3 years ago
Mina says triangle A with angles
kotykmax [81]

Answer:

Yes, Mina is correct

Step-by-step explanation:

Let the triangles be A and B

Given

Triangle A:

Angles = 34, 57

Triangle B:

Angles = 89, 57

Required

Is Mina's claim correct?

First, we calculate the third angle in both triangles.

For A:

Third\ Angle = 180 - 34 - 57

Third\ Angle = 89

For B:

Third\ Angle = 180- 89 - 57

Third\ Angle = 34

For triangle A, the angles are: 34, 57 and 89

For triangle B, the angles are: 34, 57 and 89

<em>Since both triangles have the same angles, then by the postulate of AAA (Angle-Angle-Angle), the triangles are similar.</em>

3 0
3 years ago
Find<br> the<br> Inverse<br> y = x+10/7
Alona [7]

Answer:

x - \frac{10}{7}

Step-by-step explanation:

y = x + 10/7

x = y + 10/7

x = y + 10/7

x - 10/7 = y

y = x - 10/7

x - \frac{10}{7}

3 0
3 years ago
Find the value of p for which x = -2, y = -1 is a solution of linear equation 5x + 2py = 2p.​
Rom4ik [11]
I think p=4
How I solved it:
5(-2)+2p+2(-1)=2p
-10+2p+-2=2p So cross out last
-2p -2p 2p:)
= -10+2p+-2
+10 +10 Cross out the 10
= 2p=8
= divide both sides by 2p
= 2p/2= 8/2
= cross out the 2.
= which leaves
= p=4 we get 4 because we divide 8 to 2:)


I don’t know if I’m right but yea...



8 0
3 years ago
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