3 years ago

How to solve this binomial: (-x+9)(-x+7)

Mathematics

1 answer:

Vlada [557]3 years ago

7 0

Well the answer is x^2 - 16x + 63

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2x- 3y=9 5x+3y=12 How would i solve this? I dont understand this and i really need help with it!Also I have to graph the an

dedylja [7]

$\begin{cases} 2x- 3y=9 \\5x+3y=12 \end{cases}\\ + \ \ ------- \\ 7x=21 \ \ /: 7\\ \\x=\frac{21}{3}\\ \\ x=3 \\ \\2x- 3y=9$

$2*3-3y=9\\ \\6-3y =9\\ \\-3y=9-6\\ \\-3y=3 \ \ / :(-3)\\ \\x=-1\\ \\ \begin{cases} x=3\\y= -1 \end{cases}$

$graph\\ \\\begin{cases} 2x- 3y=9 \\5x+3y=12 \end{cases}\\ \\ \begin{cases} - 3y=-2x+9\ \ /:(-3) \\ 3y=-5x+12 \ \ /:3 \end{cases}\\ \\ \begin{cases} y= \frac{2}{3}x-3 \\ y=-\frac{5}{3}x+4 \end{cases}$

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3 years ago

What is the area of a rectangle if it is 1/2 of a meter long and 3/8 of a meter wide?

Sonbull [250]

Answer:

Area equals to 3/16

Step-by-step explanation:

You can compute this with the easiest way,that is with formula

Area=LENGTH×WIDTH

So,1/2 × 3/8=3/16

5 0

3 years ago

What is -23/6 - 7/3<br>A-37/6<br>B-30/9<br>C-16/6<br>D37/6

8_murik_8 [283]

Answer:

Step-by-step explanation:

i solved it

7 0

3 years ago

Of 30 students, 1/3 play sports. Of those who play sports, 2/5 play soccer.

lana [24]

Answer: 10 or 12

Step-by-step explanation:

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3 years ago

Tim is training for a marathon, He ran 24 miles in 5 days, if he ran the same distance each diay, how far did he run per day?

malfutka [58]

Answer:

I believe its 4.8, which is confusing seeing as its not an option.

Step-by-step explanation:

If he ran 24 miles in 5 days, divide 24 by 5 to get your answer.

7 0

3 years ago