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IrinaK [193]
3 years ago
5

Simplify this please (multi choice)

Mathematics
1 answer:
kow [346]3 years ago
5 0
3 2/3 = 3x3=9+2=11/3
4 2/5= 4x5=20+2=22/5
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X2 – 7x + 6 = -8<br> solve using factoring
murzikaleks [220]

Answer:

Step-by-step explanation:

Rewrite this in standard quadratic equation form:  x^2 - 7x +  6 + 8 = 0, or x^2 - 7x + 14 = 0.  This does not factor easily, so I will use the quadratic formula to find the roots and then write out the factors based upon the roots:

The discriminant is b^2 - 4ac, which here is (-7)^2 - 4(1)(14) = -7.

Because the discriminant is negative, we know that there are two unequal, complex roots.  They are:

      -(-7) ± i√7         7 ± i√7

x = ----------------- = ---------------

              2                     2

One factor is (x - [1/2]{7 ± √7}  )

7 0
3 years ago
If a rectangle has a width of 5 meters and a perimeter of 50 meters calculate the area.
shepuryov [24]

Answer:

The area is 100m^2

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
What is the y-intercept of the equation y=−5x−2 ? Enter your answer in the box.
tangare [24]

Answer:

(0,-2)

Step-by-step explanation:

substitute in 0 for x

and solve for y

3 0
3 years ago
Hey can someone please help me with just number 13 ?
Fudgin [204]
THE ANSWER IS B! YOUR WELCOME!
7 0
3 years ago
Find the solution of the system of equations.<br> 15x – 4y = -50<br> 3x – 2y = –16
rusak2 [61]

Answer:

x=-2, y=5. (-2, 5).

Step-by-step explanation:

15x-4y=-50

3x-2y=-16

---------------

15x-4y=-50

-5(3x-2y)=-5(-16)

------------------------

15x-4y=-50

-15x+10y=80

-------------------

6y=30

y=30/6

y=5

3x-2(5)=-16

3x-10=-16

3x=-16+10

3x=-6

x=-6/3

x=-2

7 0
3 years ago
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