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
Sergeu [11.5K]
3 years ago
6

13-(x+5)=4x-2 what is x?

Mathematics
1 answer:
Harman [31]3 years ago
6 0
First simplify-
13-(x+5)=4x-2
13-x+5=4x-2
18-x=4x-2
Then isolate the variable-
20=5x
And last, divide both sides by 5 to get just x (not 5 x)-
x=4
You might be interested in
M=3rt squared -2rv solve for v.
insens350 [35]
M = 3rt^2 - 2rv
2rv = 3rt^2 - M
v = (3rt^2 - M)/2r
7 0
3 years ago
Nikola likes to play horseshoes, where players try to score a ringer by throwing a horseshoe so it lands around a post. A player
steposvetlana [31]

Answer:

0.9 for the top box and 1.68 for the bottom box

Step-by-step explanation:

give me brainliest answered on khan academy

8 0
3 years ago
The volume V of an ice cream cone is given by V = 2 3 πR3 + 1 3 πR2h where R is the common radius of the spherical cap and the c
Nuetrik [128]

Answer:

The change in volume is estimated to be 17.20 \rm{in^3}

Step-by-step explanation:

The linearization or linear approximation of a function f(x) is given by:

f(x_0+dx) \approx f(x_0) + df(x)|_{x_0} where df is the total differential of the function evaluated in the given point.

For the given function, the linearization is:

V(R_0+dR, h_0+dh) = V(R_0, h_0) + \frac{\partial V(R_0, h_0)}{\partial R}dR + \frac{\partial V(R_0, h_0)}{\partial h}dh

Taking R_0=1.5 inches and h=3 inches and evaluating the partial derivatives we obtain:

V(R_0+dR, h_0+dh) = V(R_0, h_0) + \frac{\partial V(R_0, h_0)}{\partial R}dR + \frac{\partial V(R_0, h_0)}{\partial h}dh\\V(R, h) = V(R_0, h_0) + (\frac{2 h \pi r}{3}  + 2 \pi r^2)dR + (\frac{\pi r^2}{3} )dh

substituting the values and taking dx=0.1 and dh=0.3 inches we have:

V(R_0+dR, h_0+dh) =V(R_0, h_0) + (\frac{2 h \pi r}{3}  + 2 \pi r^2)dR + (\frac{\pi r^2}{3} )dh\\V(1.5+0.1, 3+0.3) =V(1.5, 3) + (\frac{2 \cdot 3 \pi \cdot 1.5}{3}  + 2 \pi 1.5^2)\cdot 0.1 + (\frac{\pi 1.5^2}{3} )\cdot 0.3\\V(1.5+0.1, 3+0.3) = 17.2002\\\boxed{V(1.5+0.1, 3+0.3) \approx 17.20}

Therefore the change in volume is estimated to be 17.20 \rm{in^3}

4 0
3 years ago
Help me with these 3 and explain too thank you :))
xz_007 [3.2K]

Answer:

1) 25

2) 2

3) f(g(1)) = 42

Step-by-step explanation:

1) Given that f(x) = 4x^2  + 9

If x = -2

f(-2) = 4(-2)^2 + 9

f(-2) = 4(4) + 9

f(-2) = 16 + 9

f(-2) = 25

2) Given that f(x) = 4x - 6

y = 4x - 6

Replace y  with x

x = 4y - 6

MAke y the subject of the forfmula

4y = x+ 6

y = (x+6)/4

SInce x = 2

f^(-1)(2) = (2+6)/4

f^(-1)(2) = 8/4 = 2

3) If f(x) = 6x and g(x) = x+6

f(g(x)) = f(x+6)

f(x+6) = 6(x+6)

Since x = 1

f(g(1)) = 6(1+6)

f(g(1)) = 6(7)

f(g(1)) = 42

5 0
3 years ago
Simplify 14 + 13 − (12 + 11). A) 0 B) 1 C) 4 D) 10
never [62]
C. 4
14 + 13 - (23)
27 - 23
4
4 0
3 years ago
Read 2 more answers
Other questions:
  • For thousands of​ years, gold has been considered one of the​ earth's most precious metals. one hundred percent pure gold is​24-
    12·1 answer
  • Identify the phase shift of each function. Describe each phase shift ( use a phrase like 3 units to the left):
    5·1 answer
  • A restaurant cook earns $8 per hour for the first 40 hours worked and $12 per hour for over time (hours worked in addition to th
    9·1 answer
  • Meredith picked 4 times as many green peppers as red peppers if she picked a total of 20 peppers how many green peppers did she
    11·1 answer
  • A mechanic billed a customer for 4 hrs. labor plus 215 for parts the total bill was for 375. how much did the mechanic charge fo
    10·1 answer
  • PLS HELP LOL!!! Isabella and Alice are standing some distance apart on the same side of a building 50 meters tall. From where Is
    12·1 answer
  • Construct a circle through points<br> X, Y, and Z.
    5·1 answer
  • 20% of a is 11. What is a?
    12·1 answer
  • What is the enlargement ratio of you enlarge a 8:6 to have a height of 12 units and a width of 16 units.
    14·1 answer
  • Write 3/16 as a decimal
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!