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4 years ago

6

HELP ME PLZZZ!!!!!!!!!!!!!

1 answer:

Aleks04 [339]4 years ago

8 0

Not completely sure but i would go with D

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Solve by substitution -3x-2y=5.5 x+3y=7.5

Naddika [18.5K]

$\bf \begin{cases} -3x-2y=5.5\\[-0.5em] \hrulefill\\ x+3y=7.5\\ \boxed{x}=7.5-3y \end{cases}~\hspace{5em}\stackrel{\textit{substituting \underline{x} in the 1st equation}}{-3\left( \boxed{7.5-3y} \right)-2y=5.5} \\\\\\ -22.5+9y-2y=5.5\implies -22.5+7y=5.5\implies 7y=28 \\\\\\ y=\cfrac{28}{7}\implies y=4 \\\\\\ \stackrel{\textit{substituting the found \underline{y} in the 2nd equation}}{x+3(4)=7.5\implies x+12=7.5}\implies x=-4.5 \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill (-4.5,4)~\hfill$

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3 years ago

Find the domain and range<br> y= 3x - 3

elena-14-01-66 [18.8K]

Domain: (-infinity, infinity)
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6 0

3 years ago

What is the length of the x component of the vector shown below

jok3333 [9.3K]

Answer:

D

Step-by-step explanation:

x=8*cos(34°)=6.632≈6.6

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3 years ago

I givee brainlilstttt

Anastasy [175]

Answer:

A

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

The area of the triangle above will equal one half of a rectangle that is 5 units long and __ units wide. (Input only whole numb

Anastasy [175]

Answer:

2

Step-by-step explanation:

Find the diagram attached

The Base of the triangle will be equivalent to the the length of the rectangle

Since the base of the triangle is 5units, hence length of the rectangle is 5units

Similarly, the height of the triangle is corresponding to the width of the rectangle

Since the height of the triangle is 2 units, the rectangle will be 2 unts wide. Hence the required answer is 2units

6 0

3 years ago