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2 years ago

7

Which expression below is equivalent to:

1 answer:

AlexFokin [52]2 years ago

5 0

C. combine like terms 7 + 3 -1 9b then 11-4

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The questions are in the images pls answer all or your answer will be deleted because this is for a lot of points and im losing

PilotLPTM [1.2K]

1)

x + 2y = 21

+ -x + 3y = 29

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

5y = 50

y = 10

x + 2(10) =21

x = 1

2)

6x + 6y = 30

+ 15x - 6y = 12

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

21x = 42

x = 2

6(2) + 6y = 30

6y = 18

y = 3

7 0

2 years ago

Find the roots of the parabola given by the following equation <br> 2x^2+5X-9=2x

natta225 [31]

Answer:

$x=-3\:or\:x=\frac{3}{2}$

Step-by-step explanation:

The given parabola has equation

$2x^2+5x-9=2x$

We rewrite in standard form to obtain:

$2x^2+5x-2x-9=0$

$2x^2+3x-9=0$

Split the middle terms to get:

$2x^2+6x-3x-9=0$

Factor by grouping:

$2x(x+3)-3(x+3)=0$

$(x+3)(2x-3)=0$

$x=-3\:or\:x=\frac{3}{2}$

7 0

2 years ago

Solve for :<br> 12 = 15 (z - 1/5)

Ronch [10]

The answer to this problem “12 = 15(z-1/5) is : Z = 1

6 0

2 years ago

What is the value of mc011-1.jpg?<br> –4<br> –2<br> 2<br> 4<br><br> the pic is the .jpg

oksian1 [2.3K]

-2(7-15) / 4

-2(-8) = 16

16/4 = 4

Answer is 4

3 0

2 years ago

Read 2 more answers

If your good at maths help me

ahrayia [7]

Answer:

6n+1

Step-by-step explanation:

first term=13-6=7

nth term=7+(n-1)6=7+6n-6=6n+1

3 0

2 years ago

Read 2 more answers