MATHEMATICS MIDDLE SCHOOL

How many solutions does the equation have?4x+2(x-3)=8x+12


A.


one solution


B.


infinite solutions


C.


no solution

Answers

Answer 1
Answer: First we have to distribute the parentheses on the left side, 2*x is 2x and 2*-3 is -6, so now the equation is 4x+2x-6 = 8x+12
Then, we can add together the two x's on the left side,
so now we have 6x-6 = 8x+12       Subtract 12 from both sides and
you get 6x -18 = 8x    Then you can subtract 6x from both the sides and get
-18 = 2x  Now we can divide both sides by 2, and the final answer is -9 = x
Since they are not the same and the two sides aren't unequal, there is one solution(:
Hope this is helping you(:

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The outdoor temperature declines 3 degrees each hour for 5 hours.what is the change in temperature at the end of those 5 hours ?
Which of the following expressions are equivalent to - -8/-4a. -8-/4b. 2c. none of the above
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dan runs freddy's deluxe car wash nine workers wash a total of 369 cars in one week suppose the workers all wash the same number of cars how many cars does each worker wash that week

Answers

Answer:

73.8, if their working 5 days a weak.

52.71 (goes on and on) if their working all 7 days a weak.

Step-by-step explanation:
ask them how many cars does each of them wash a week

What radius of a circle is required to inscribe a regular hexagon with an area of 210.44 cm2 and an apothem of 7.794 cm

Answers

we know that

[area of a regular hexagon]=6*[area of one equilateral triangle]
210.44=6*[area of one equilateral triangle]
[area of one equilateral triangle]=210.44/6-----> 35.07 cm²

[area of one equilateral triangle]=b*h/2
h=7.794 cm
b=2*area/h------> b=2*35.07/7.794------>b= 9 cm

the length side of a regular hexagon is 9 cm
applying the Pythagorean theorem
r²=h²+(b/2)²------>r²=7.794²+(4.5)²------> r²=81--------> r=9 cm

this last step was not necessary because the radius is equal to the hexagon side------> (remember the equilateral triangles)

the answer is
the radius is 9 cm

WhAts the answer to 5?

Answers

I think its b but i am not surely sure so you might want to check with someone else
I also think its B but I too am not entirely sure.

Gina recently got a 10% raise on her salary. If Gina used to make $25 an hour, what is her new salary? $ per hour

Answers

Answer:

Her new salary is 27.50 an hour

Step-by-step explanation:

Gina used to make $25 an hour

We are given that Gina recently got a 10% raise on her salary

Increase in salary per hour =

                                             

Her new salary = 25+2.5 = 27.5 an hour

So,  her new salary is 27.50 an hour  

A cylindrical garbage can has a radius of 2.8ft and holds 86.21 cubic feet of trash. whats the height?A) 3.5ft
B) 9.8ft
C) 5.2ft
D) 1.9ft

Answers

Answer:

Correct choice is A

Step-by-step explanation:

The volume of the cylinder can be calculated using formula

V=\pi r^2 h,

where r is the base circle radius  and h is the height of the cylinder.

In your case, V=86.21\ ft^3,\ \ \ r=2.8\ ft,

then

86.21=\pi\cdot (2.8)^2\cdot h,\n \nh=(86.21)/(7.84\pi)\approx (86.21)/(7.84\cdot 3.14)\approx 3.5\ ft.

On Monday, a clothing store sold 25 pairs of pants. On Tuesday, the store sold 37 pairs of pants.What was the percent of increase in number of pants sold from Monday to Tuesday? PLEASE HELP FAST!!!!

Answers

hello u,
on monday⇒25pants
tuesday⇒37pants
u agree that there is an increase in sail from monday to tuesday.this increase is calculated as follows,
%increase=[(number of pants sold on tuesday-pants sold on monday)/number of pants sold on monday]*100=48%

goodluck
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