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
Juli2301 [7.4K]
4 years ago
5

R is the midpoint of AM. If RA = x2 - 16x and MR = 80, find x.

Mathematics
1 answer:
sergij07 [2.7K]4 years ago
3 0

Answer:

x = - 4 or x = 20

Step-by-step explanation:

Given R is the midpoint of AM, then

RA = MR , substitute values

x² - 16x = 80 ( subtract 80 from both sides )

x² - 16x - 80 = 0 ← in standard form

(x - 20)(x + 4) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 20 = 0 ⇒ x = 20

x + 4 = 0 ⇒ x = - 4

You might be interested in
13 cm<br> Find x.<br><br> 24 degrees
AleksandrR [38]
X is 66 degrees, you just subtract 24 to 90 and it gives you 66.
5 0
3 years ago
Find exact volume of a sphere with a radius of 10in
Elodia [21]

To find the volume of a sphere, we can apply the following formula:

(4

/3)πr^3

We know the radius is 10, so we can plug that value in.

(4/3) * pi * 10^3

<h3>V = 4188.79020479in^3</h3>

The question says "exact" volume, so I've included all of the digits in the tenths and beyond place, without rounding.

3 0
3 years ago
Five people each take the same number of candies from a jar. Then a group of seven people does the same: in so doing they empty
Vika [28.1K]

Answer:

Step-by-step explanation:

Let first group of people take x candies each

and second group of people take y candies each

5x + 7y will be total candies

5x +7y = 239 (needed to find positive solution of x,y)

now take x=38,  y =7

or x=31,   y= 12

hence lots of possibilities ,so we can not say exactly

3 0
3 years ago
Read 2 more answers
Give an approximate value to the tenth of the angle IJK. Thanks so much!! need answer asap!! assignment due in 5 mins pls help!!
meriva

Answ, i just need 5 pts thanks!

Step-by-step explanation:

4 0
3 years ago
Find an equation for the line that passes through the point (-4, 10) and (16, -2)
Crank

Answer:

y = 3/5x + 62/5

Step-by-step explanation:

Equation of a line with two points is

m = y - y_1 / x - x _1

m = y_2 - y_1 / x_2 - x _1

Equating both

y - y_1 / x - x_1 = y_2 - y_1 / x_2 - x_1

Using what we are provided with

(-4 , 10)(16 , -2)

x_1 = -4

y_1 = 40

x_2 = 16

y_2 = -2

Imputing the values

10 - (-2) / 16 - (-4) = y - 10 / x - (-4)

10 + 2 /16 + 4 = y - 10 / x + 4

12 / 20 = y - 10 / x + 4

Lets cross multiply

12 ( x + 4) = 20(y - 10)

Open the brackets

12x + 48 = 20y - 200

12x + 48 + 200 = 20y

12x + 248 = 20y

Following this equation of line

y = mx + C

20y = 12x + 248

Let's divide through by 20 to get y.

20y / 20 = 12x + 248 / 20

y = 12x + 248 / 20

We can separate it by

y = 12x / 20 + 248 / 20

y = 3/5x + 62/5

Therefore, the equation of the line is

y = 3/5x + 62/5

3 0
3 years ago
Other questions:
  • Is 91.7% rational or irrational​
    13·1 answer
  • What’s the side length of AB?
    14·1 answer
  • Find x.<br><br><br><br> 1.5<br> 2<br> <img src="https://tex.z-dn.net/?f=%5Csqrt%7B3%7D" id="TexFormula1" title="\sqrt{3}" alt="\
    13·1 answer
  • What is the value of log27 165
    11·2 answers
  • Face north. do a 1/4 turn clockwise which way will i be facing
    8·2 answers
  • Plz help me as soon as possible! Thank you
    7·2 answers
  • Please help i’ll give u a brainliest
    12·1 answer
  • Please help fast. Due at 9:35 today . Hurry
    14·1 answer
  • Plz plz plz plz plz plzzzzzzz
    9·2 answers
  • A) x²-4x+3=0 prove in factorization form<br>​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!