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3 years ago

Subtract (4x − 3y) from the sum of (12x + 9y) and (−2y).

1 answer:

5 0

1) Find sum of (12x+9y) and (-2y)
12x+9y+(-2y)=12x+7y

2) Subtract (4x-3y) from the sum
(12x+7y)-(4x-3y)=12x+7y-4x+3y=8x+10y

3) The answer is 8x+10y

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PLEASEEE HURRYYY

Masteriza [31]

Answer:

(2,-5) and (2,1).

Step-by-step explanation:

We need to find the find all the points having an x coordinate of 2 whose distance from the point (-2,-4) is 5.

A circle with center (-2,-4) and radius 5 represents all the points whose distance from the point (-2,-4) is 5.

Standard form of a circle is

$(x-h)^2+(y-k)^2=r^2$

where, (h,k) is center and r is the radius.

$(x-(-2))^2+(y-(-4))^2=(5)^2$

$(x+2)^2+(y+2)^2=25$

Now, put x=2.

$(2+2)^2+(y+2)^2=25$

$(4)^2+(y+2)^2=25$

$(y+2)^2=25-16$

$(y+2)^2=9$

Taking square root on both sides.

$y+2=\pm\sqrt{9}$

$y+2=\pm3$

$y+2=-3\text{ or }y+2=3$

$y=-5\text{ or }y=1$

So, the y-coordinates of the points are -5 and 1.

Therefore, the required points are (2,-5) and (2,1).

8 0

2 years ago

sally earns $15 per hour waiting tables for 12 hours each week at a local cafe but on Sunday she works for 4 hours and is paid t

steposvetlana [31]

Answer:

12*15 + 4*15*1.5

180+90 = $270

Step-by-step explanation:

7 0

3 years ago

Solve the equation 3+2/5x=11-2/5x using at least two different sequences of steps. Show your work for each step.

Rina8888 [55]

First combine like terms ,
5/5x=9/5x
move the variable which will cancel out because it is the same
5=9 is no solution sorry if i’m wrong lol

4 0

2 years ago

I need help figuring this question out

Marysya12 [62]

ANSWER: (4,26)
Comment below if you have any questions or want an explanation:

7 0

2 years ago

PLEASE HELP!!! 20 POINTS!!!!

stealth61 [152]

To evaluate the expression all you have to do is substitute the value for the variable.

3 + y + 6, y = 5
3 + 5 + 6
8 + 6
14.

The solution is 14.

8 0

2 years ago

Read 2 more answers