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2 years ago

Evaluate the expression for x = 3 y= 1/3 and z= 5. 12 x - 3y / 4 x - Z

Mathematics

1 answer:

4vir4ik [10]2 years ago

5 0

Answer:

Step-by-step explanation:

12 x - 3y / 4 x - Z

=12×3-3×1/3÷4×3-5

=36-1/12-5

=35/7

So the final answer is 5.

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Need help asap !!!!!

mixer [17]

First distribute the -3 to the 8 and -11y
so - 13y -24 +33y
combine like terms
so -13y and 33y together
that will be 20y -24

Hope this helps ;)

8 0

2 years ago

Read 2 more answers

Please answer correctly !!!!!!! Will mark brainliest

Sauron [17]

Answer:

option 1

Step-by-step explanation:

y = 3x + 3 ie 3x -y +3 =0 a1= 3 , b1=-1 , c1=3

y = -2x + 3 ie -2x -y+3 = 0 a2=-2 , b2=-1 , c2=3

on comparing the ratios ,

a1/a2 = 3/2

b1/b2 = -1/-1= 1/1 =1/1= 1

a1/a2 ≠ b1/b2

therefore the pair of linear equations will have exactly one solution

mark me as the brainliest...

7 0

3 years ago

Read 2 more answers

The linear equation graphed above gives the height in feet above the ground of Shelly t seconds after she opened her parachute w

mars1129 [50]

Answer:

$\large \boxed{\text{60 s}}$

Step-by-step explanation:

Assume your graph looks like the one below.

1. Calculate the equation of the straight line

The slope-intercept equation for a straight line is

y = mx + b

where m is the slope of the line and b is the y-intercept.

The line passes through the points (0,2600) and (30, 2300)

(a) Calculate the slope of the line

$\begin{array}{rcl}m & = & \dfrac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\ & = & \dfrac{2300 - 2600}{30 - 0}\\\\& = & \dfrac{-300}{30}\\\\& = & \text{-10 ft/s}\\\\\end{array}$

(b) Locate the y-intercept

The y-intercept is at 2600 ft

(c) Write the equation for the line

h = -10t + 2600

(d) Calculate the time to 2000 ft

$\begin{array}{rcl}h & = & -10t + 2600\\2000 & = & -10t + 2600\\-600 & = & -10t\\t & = & \dfrac{-600}{-10}\\\\& = & \text{60 s}\\\end{array}\\$

Shelley will be at 2000 ft 60 s after opening the parachute.

5 0

3 years ago

The product of x and y is less than or equal to 4

Trava [24]

Product means multiplication. So the equation would be xy ≤ 4.

3 0

3 years ago

A line intersects the point (-11, 4) and has a slope of -2. What are the inputs to the point-slope formula? y - [?] = [](x-[])

Lyrx [107]

y - 4 = -2 ( x - ( -11)) which would simplify to y - 4 = -2 ( x + 11) !!

5 0

2 years ago

Evaluate the expression for x = 3 y= 1/3 and z= 5. 12 x - 3y / 4 x - Z​

Evaluate the expression for x = 3 y= 1/3 and z= 5. 12 x - 3y / 4 x - Z