1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Serhud [2]
3 years ago
10

What is 2r - 6r 8 = 40?

Mathematics
2 answers:
Anit [1.1K]3 years ago
3 0
Well first you have to add common like terms in this case 2r and -6r to get -4r now your equation is -4r+8=40, now subtract 8 from both sides to leave r by itself and get -4r=32, now divide both sides by -4 to get r=-8

Hope this helps
Artist 52 [7]3 years ago
3 0
2r( 1 - 3×8) = 40
2r (1 - 24) = 40
2r(-23)=40
-46r=40
r = -40/46
r. = - 0.86
You might be interested in
2/7, solve for n, explain too please
kirill [66]

Answer:

n = 19.2

Step-by-step explanation:

12 / 5 = n / 8

n = 12 * 8 / 5

n = 96 / 5

n = 19.2

3 0
3 years ago
Read 2 more answers
Taylor Swift wants to find the distance, AB, across a river. She starts at point B and walks along the edge of the river 94 ft a
ad-work [718]

Answer:

A) Ms. Swift can conclude that hey are similar, because line E,C,A is collinear, and they both are right triangles.

B) 158.3ft

Step-by-step explanation:

A) Having a collinear line makes the triangles similar, and because of their collinear line they are both right triangles.

B) The question tells you DE is 103 ft. You take 76ft and Square it giving you 5776ft You then take 103 and square it giving you 10609ft adding them together gives you 16385ft you take the square root of it and it gives you the hypotenuse of triangle CDE. To get the hypotenuse of triangle ABC you take The expression (AB/DE)=(BC/CD)=(AC/EC) step one (AB/DE)=(94ft/76ft)=AC/DE) step two (103ft/127ft)=(94ft/76ft)=(AC/DE) third step (103ft/127ft)=(94ft/76ft)=(128ft/158.3)

I truly hope this helps! :)

8 0
3 years ago
Find the perimeter of the figure to the nearest hundredth. perimeter: about cm
nordsb [41]

The perimeter of the figure to the nearest hundredth is 50.26 cm.

<h3>Perimeter of a figure.</h3>

The perimeter of a figure is the sum of the whole sides of the figure.

The perimeter of the figure can be found as follows:

perimeter of the figure = 12 + 5 + 5 + circumference of the semi circle

circumference of the semi circle  = πr

where

  • r = radius

perimeter of the figure = 22 + πr

perimeter of the figure = 22 + 3.14(9)

perimeter of the figure = 22 + 28.26

perimeter of the figure = 50.26 cm

learn more on perimeter here: brainly.com/question/11419989

#SPJ1

6 0
2 years ago
The semi circle and isosceles triangle have the same base AB and the same area. Find angle x. Show workout.
Nina [5.8K]
r= \frac{AB}{2} \\ \\A_{semi\:circle }=\frac{r^2\pi}{2} \\ \\A_{triangle}=A_{semi\:circle }=\frac{r^2\pi}{2} \\ \\A_{triangle}= \frac{2r\times h}{2} =rh \\ \\\frac{r^2\pi}{2}= rh \\ \\h=\frac{r\pi}{2} \\ \\ \tan{x}= \frac{h}{r} = \frac{\frac{r\pi}{2}}{r} =\frac{\pi}{2} \\ \\x=\arctan{\frac{\pi}{2}}&#10;\\&#10;\\x \approx 57.52^o
7 0
3 years ago
Eight times the sum of a number and 4 equals 3
BigorU [14]

The algebraic expression is:8(x+4)=3

And Value of x is: x=\frac{-21}{8}

Step-by-step explanation:

We need to write the expression of the statement:

Eight times the sum of a number and 4 equals 3

Let the number = x

The expression will be:

8(x+4)=3

Solving the expression to find value of x:

8(x+4)=3\\8x+24=3\\Adding\,\,-24\,\,on\,\,both\,\,sides:\\8x+24-24=3-24\\8x=-21\\x=\frac{-21}{8}

So, The algebraic expression is:8(x+4)=3

And Value of x is: x=\frac{-21}{8}

Keywords: Algebraic Expression

Learn more about Algebraic Expression at:

  • brainly.com/question/1600376
  • brainly.com/question/1617787
  • brainly.com/question/9720317

#learnwithBrainly

3 0
3 years ago
Other questions:
  • A car dealer recently sold five cars for the following profits: $10,126, $9,999, $12,398, $12,007, and $4,567. What was the mean
    14·2 answers
  • An avogadro's number of any element is equivalent to
    9·1 answer
  • I have a few Algebra problems that I have no clue how to solve. Help would be greatly appreciated!
    11·1 answer
  • Solve for x in the literal equation x/8-g= a
    13·1 answer
  • A rock is thrown upwards with in total velocity of 75 ft/s from a height of 225 feet. The height h of the rock above the ground
    6·1 answer
  • Elizabeth and lauren sold cookies for a school fundraiser and made 1,316.70. Together the girl sold a total of 831 cookies. Eliz
    6·1 answer
  • Find the value of n in the Triangle
    14·1 answer
  • Solve the following equation 5(e + 6) = 75
    14·2 answers
  • Cole ordered football equipment containing 20 items that cost $477. The equipment
    13·1 answer
  • NEED ANSWER ASAP PLEASE TYSM
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!