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Mathematics

2 answers:

Nonamiya [84]3 years ago

8 0

Answer:

(-1,9) is correct in edg2020

Step-by-step explanation:

kotegsom [21]3 years ago

4 0

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}y=-3x+6\\y=9\end{array}\right\\\\\text{Put the value of y to the first equation:}\\\\9=-3x+6\qquad\text{subtract 6 from both sides}\\3=-3x\qquad\text{divide both sides by (-3)}\\-1=x\to x=-1$

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identify the special product by writing the letter of the answer on the space provided ( question in photo number 1 )

Taya2010 [7]

Question:

Solution:

Note that :

$x^2+9x\text{ + 20 = 1(x+4)(x+5)}$

where the left hand of the equation represents a trinomial and the right hand of the equation represents a product of two binomials. Then, we can conclude that the correct answer is:

8 0

1 year ago

In the following exercises, multiply the binomials. Use any method.<br> 252. (3r − 8)(11r + 1)

Luda [366]

Answer:

Hence the expression $(3r-8)(11r+1)=33r^2-85r-8$ .

Step-by-step explanation:

Explanation

The given expression is (3 r-8)(11 r+1).
We have to multiply the given expression.
Multiply the (3 r-8) by 1 , multiply the (3 r-8) by 11r then add like terms.

$$$\frac{\begin{matrix}{} & {} & 3r & - & 8 \\ \times & {} & 11r & + & 1 \\ \end{matrix}}$

___________

${\frac{\begin{matrix}{} & {} & 3r & - & 8 \\ 33{{r}^2} & - & 88r & {} & {} \\ \end{matrix}}{\begin{matrix}33{{r}^2} & - & 85r & - & 8 \\ \end{matrix}}}$$$