Help me with my algebra 2 please (:

Mathematics

1 answer:

snow_tiger [21]3 years ago

5 0

Answer:

The first one

Step-by-step explanation:

Make 3x+6 into 3(x+2)

Separate x²+5x+6 into (x+2)(x+3)

Cross out both x+3

6x÷3

Put x+2 together to make (x+2)²

$\frac{2x}{(x+2)^2}$

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Plz help me, plz help deku!?!

DanielleElmas [232]

Answer:

14 cm squared

Step-by-step explanation:

The shaded triangle is clearly half of the rectangle, and half of 28 is 14.

The other way you can look at it is that the dimensions of the rectangle are 4 cm and 7 cm. The area of a triangle equation is $\frac{bh}{2}$ . So $\frac{4(7)}{2}$ is 14.

7 0

3 years ago

Can u help me i dont get it pleas ur the best thank u soo much

ozzi

To find out how many pages she needs to read everyday, you have to divide.

128.5/4.5 = 28.55

So your answer is B) 28.55

Hope this Helps!!

8 0

3 years ago

Read 2 more answers

What is the area of a rectangle with vertices at (−3, −1) , (1, 3) , (3, 1) , and (−1, −3) ?

kondaur [170]

The length of the side joining points (-3, -1) and (1, 3) is given by

$l= \sqrt{(1+3)^2+(3+1)^2} \\ \\ = \sqrt{4^2+4^2} = \sqrt{16+16} \\ \\ = \sqrt{32}$

The length of the side joining points (1, 3) and (3, 1) is given by

$w= \sqrt{(3-1)^2+(1-3)^2} \\ \\ = \sqrt{2^2+(-2)^2} = \sqrt{4+4} \\ \\ = \sqrt{8}$

The area of a rectangle is given by length times width.

Thus, the area of the given rectangle is given by

$Area=l\times w \\ \\ = \sqrt{32} \times \sqrt{8} \\ \\ = \sqrt{32\times8} = \sqrt{256} \\ \\ =\bold{16} \ units^2$