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
podryga [215]
3 years ago
9

I need help with math ...x+180+1.5x+3x=455

Mathematics
1 answer:
kirill115 [55]3 years ago
8 0
5.5x+180=455
5.5x=275
The answer is X=50
You might be interested in
SOMEONE ANSWER THIS PLSSSS
Anestetic [448]

Answer:

here's the answer to your question

5 0
4 years ago
2x + 1 ≤ 7 and -2x + 1 ≤ 9
djyliett [7]

Answer:

Step-by-step explanation:

6 0
3 years ago
For the given decimal −0.009, find the two integers closest to it.
irinina [24]

Answer:

0 and -1

Step-by-step explanation:

The two integers closest to -0.009 are 0 by truncation and -1 by approximation.

8 0
3 years ago
10. Determine the open interval(s) on which the function f(x) = 12x - x^3 is increasing.
Gre4nikov [31]

Answer:

\large\boxed{x\in(-2,\ 2)}

Step-by-step explanation:

f(x)=12x-x^3

Calculate the derivative of the function:

f'(x)=\left(12x-x^3\right)'=(12x)'-\left(x^3\right)'=12-3x^2

Calculate the zeros of the derivative:

f'(x)=0\Rightarrow12-3x^2=0\qquad\text{add}\ 3x^2\ \text{to both sides}\\\\3x^2=12\qquad\text{divide both sides by 3}\\\\x^2=4\to x=\pm\sqrt4\\\\x=\pm2

Let's check the derivative sign:

f'(x)>0\iff12-3x^2>0\qquad\text{use the distributive property}\\\\-3(x^2-4)>0\\\\-3(x^2-2^2)>0\qquad\text{use}\ a^2-b^2=(a-b)(a+b)\\\\-3(x-2)(x+2)>0\\^{\qquad x=2\qquad x=-2

Sketch a parabola open down

(before the brackets there is the number -3 < 0)

Look at the picture.

Where the derivative is negative, the function decreases.

Where the derivative is positive, the function increases.

Therefore your answer is:

x\in(-2,\ 2)

3 0
4 years ago
7n−4=31, n, minus, 4, equals, 31<br> n =n=n, equals
ziro4ka [17]

Answer:

5

Step-by-step explanation:

7 times 5 equals 35 minus 4 equals 31

6 0
4 years ago
Other questions:
  • The system of equations shown below is graphed on a coordinate grid:
    9·2 answers
  • Which equation describes the data in the table above ?
    6·2 answers
  • A plane cuts through a 26 cm diameter sphere, but the closest it gets to the center is 5 cm. What is the area of the intersectio
    9·1 answer
  • Determine whether the given set S is a subspace of the vector space V .
    12·1 answer
  • Hi! What is 9/10 - 1/3=
    9·2 answers
  • What is the volume of the sphere?
    5·1 answer
  • The height of the wall is 77 inches tall. What is its height in feet?​
    8·2 answers
  • In ΔHIJ, the measure of ∠J=90°, HI = 88 feet, and IJ = 62 feet. Find the measure of ∠I to the nearest tenth of a degree.
    14·2 answers
  • FAST I NEED HELP PLEASE​
    12·2 answers
  • In your own words, write three or four sentences explaining what exponents are and how they are used in math.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!