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Mkey [24]
3 years ago
10

Can someone help me please, with the step by step explanation ???

Mathematics
1 answer:
kvv77 [185]3 years ago
7 0

Answer:

a=2

Step-by-step explanation:

8a +9=3a +19

Subtract 9 from both sides

-9=      -9

8a=3a +10

Subtract -3a from both sides

5a=10

5a=10

5a divided by both sides

5/5

10/5=2

a=2

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STALIN [3.7K]

Answer:

y+yz is: 2x^2-2x-1

Step-by-step explanation:

Given expressions are:

y = x+\frac{1}{2}\\z = 2x-3

The given expressions are polynomials and we have to find the value of y+yz

First of all, we will find the product of y and z

We will use the distribution to find the product.

yz = (x+\frac{1}{2})(2x-3)\\= x(2x-3)+\frac{1}{2}(2x-3)\\= 2x^2-3x+x-\frac{3}{2}\\=2x^2-2x- \frac{3}{2}

The next step is to add y and yz

y+yz = (x+\frac{1}{2})+(2x^2-3x-\frac{3}{2})\\Combining\ like\ terms\\= 2x^2+x-3x+\frac{1}{2} -\frac{3}{2}\\=2x^2-2x + \frac{1-3}{2}\\=2x^2-2x+\frac{-2}{2}\\=2x^2-2x-1

The answer is not one of the options which i assume might be a typing mistake.

Hence,

y+yz is: 2x^2-2x-1

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