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
Pani-rosa [81]
3 years ago
10

What is the value of x?

Mathematics
1 answer:
navik [9.2K]3 years ago
5 0
3x+84=180 minus 84
3x = 96 divide both sides by 3
x= 32°
You might be interested in
30=7r+5 what’s does r stand for
harkovskaia [24]

Answer:

An unknown variable

Step-by-step explanation:

r is an unknown variable -> the equation is used to solve for it.

7 0
3 years ago
Read 2 more answers
A six sided number cube is rolled . find the probability of rolling a 3 or a number greater than 4.
Kazeer [188]
C 1/2 is the answer to that
4 0
3 years ago
Read 2 more answers
PLEASE HELP!!!<br> If f(x) = -2x^2 + x - 5, what is f(3)?
kow [346]

Answer:

  • <u>f(3) = -10</u>

Step-by-step explanation:

<u>Given</u>

  • f(x) = -2x² + x - 5

<u>Solving</u>

  • To find f(3), substitute x = 3 in the function
  • ⇒ f(3) = -2(3)² + (3) + 5
  • ⇒ f(3) = -2(9) + 8
  • ⇒ f(3) = -18 + 8
  • ⇒ <u>f(3) = -10</u>
4 0
2 years ago
Read 2 more answers
Best estimate for 61/7
Ne4ueva [31]

I would say the best estimate would be 9 because the real answer is 8.71 and if you round that to the 1 place the answer would be 9.

8 0
3 years ago
Look at the pentagonal numbers. Use finite differences to determine which function represents the pattern.
Ahat [919]

Answer:

f(x) = 1.5x - 0.5x

Step-by-step explanation:

The function of the pattern represented by the pentagonal numbers is the sum of three triangular numbers.

The triangular number general formula

                      x (x + 1) / 2

For  example,

The sequence

1,     3,     6,      10

                                             *

                          *              *  *

         *           *   *          *   *  *

* ,    *  *,     *   *   *,     *   *   *  *

_____________________________

The pentagonal numbers

The sequence:

1, 5, 12, 22, 35

As shown in the picture can be divided into three triangles

Triangle 2

x (x + 1) / 2

Triangle 1 and 3  (they are triangles one unit smaller than 2)

n (n + 1) / 2

n= x-1

Replacing n

(x-1) ((x-1) + 1) / 2

(x-1) (x) / 2

(x-1) x / 2

______________

Function represents the pattern

Triangle 2  + (Triangle 1  +  Triangle 3)

Triangle 1  = Triangle 3

So then,

Triangle 2 + 2* Triangle 1

x (x +1) /2  + 2* (x -1) x/2

Rearranging

0.5 x (x +1) + x(x -1)

0.5x^2 + 0.5x + x^2 -x

(0.5 x^2 + x^2)  + (0.5x -x )

1.5 x^2 - 0.5 x  

______

3 0
3 years ago
Read 2 more answers
Other questions:
  • A square poster has a side length of 26 in. Drawn on the poster are four identical triangles. Each triangle has a base of 8 in.
    6·2 answers
  • Make w the subject of the formula!!!!! HELP!!!!<br><br> y=3w-a
    10·1 answer
  • John has four more nickels than dimes in his pocket, for a total of $1.25. Which equation could be used to determine the numbet
    15·1 answer
  • Please help, I’m unsure how to do standard deviation so I’m very confused!
    14·1 answer
  • 4x^2-4x=+1 by factoring ​
    5·1 answer
  • Plz help I really need this and thx
    10·2 answers
  • Write the equation for 30 is 75% of what number​
    8·1 answer
  • You are making a salad. The ratio of olives to croutons is 5 : 3. You put 12 croutons in your salad. How many olives do you put
    13·2 answers
  • A local outdoor equipment store is being sold. The buyers are trying to estimate the percentage of items that are outdated. They
    15·1 answer
  • -(5x+1) help it’s due in 10 minutes.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!