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4 years ago

Expand and simplify: 3(2x+1)-4(2x+5)

Mathematics

1 answer:

Vlada [557]4 years ago

7 0

Answer:

-2x-17

Step-by-step explanation:

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Solve the equation 13x+16y=11 for y.

klio [65]

You can’t solve this unless you have a number to plug in for y

7 0

4 years ago

Read 2 more answers

Parallelogram ABCD has vertices at A(2,-3), B(8,-6), Cl14,-3), and D(8,0)

OlgaM077 [116]

Answer:

The correct option is C.

Step-by-step explanation:

The vertices of ABCD are A(2,-3), B(8,-6), C(14,-3), and D(8,0).

Distance formula:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

The length of sides are

$AB=\sqrt{(8-2)^2+(-6+3)^2}=\sqrt{36+9}=\sqrt{45}$

$BC=\sqrt{(14-8)^2+(-3+6)^2}=\sqrt{36+9}=\sqrt{45}$

$CD=\sqrt{(8-14)^2+(0-3)^2}=\sqrt{36+9}=\sqrt{45}$

$AD=\sqrt{(8-2)^2+(0+3)^2}=\sqrt{36+9}=\sqrt{45}$

Since length of all sides are equation therefore the given parallelogram cannot be a rectangle.

Slope formula:

$m=\frac{y_2-y_1}{x_2-x_1}$

Slope of AB is

$m_1=\frac{-6-(-3)}{8-2}=\frac{-3}{6}=\frac{-1}{2}$

Slope of BC is

$m_2=\frac{-3-(-6)}{14-8}=\frac{3}{6}=\frac{1}{2}$

Since the slopes of two consecutive sides are not opposite reciprocals, therefore the given parallelogram is a rhombus. Option C is correct.

8 0

3 years ago

Pls help asap ill give brainliest

sleet_krkn [62]

Answer:

Third one

Step-by-step explanation:

6 0

3 years ago

Help me pls fast ASAP

tensa zangetsu [6.8K]

I think the answer is the last one.

6 0

3 years ago

What is ax=bx-c;8x=3x-10?

Maurinko [17]

Hello there.

What is ax=bx-c;8x=3x-10

8cx+3x−10/x

8 0

4 years ago