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
salantis [7]
2 years ago
10

Solve the following equation by combining like terms: x+x+2+3x-6= 31 X=

Mathematics
1 answer:
Vesnalui [34]2 years ago
4 0

Answer:

X= 7

Step-by-step explanation:

x+x+2+3x-6=31 Combine x's

2x+2+3x-6=31 Continue to combine x's

5x+2-6=31  Combine whole numbers

5x-4=31  Add 4 to both sides

5x=35 Divide by 5

x=7

You might be interested in
True or false? To begin an indirect proof, you assume the converse of what you intend to prove is true.
djyliett [7]

Answer:

The statement is false.

Step-by-step explanation:

To begin an indirect proof, you assume the converse of what you intend to prove is true. This is false.

Rather the correct answer is that to begin an indirect proof, you assume the inverse of what you intend to prove is true.

The converse can be either true or false, depending on what the original statement is, so assuming the converse is pointless.

4 0
3 years ago
A cone has the diameter of 15 inches and is 27 inches tall what is the volume for the cone?
suter [353]

Answer:

the volume of a cone = 1589.625feet³

Step-by-step explanation:

given that the diameter of the cone = 15inches

radius = 15inches/2 = 7.5inches

height of the cone = 27 inches

volume of the cone = ?

recall that

the  formulae for finding the volume of a cone is given to be

= 1/3πr²h

the volume of a cone = πr² h/3

the volume of a cone = 3.14  × ( 7.5)² × 27/3

the volume of a cone = (3.14 x  56.25 x27)/3

the volume of a cone = 4768.875/3

the volume of a cone = 1589.625feet³

6 0
3 years ago
stilt scored 5 points less than twice the number scored by dunk. together they scored 43 points. how many points were scored by
gizmo_the_mogwai [7]
Set up a system of equations:

s = 2d - 5
s + d = 43

Where 's' represents the number of points Stilt scored and 'd' represents the number of points Dunk scored.

Plug in 2d - 5 for 's' in the 2nd equation:

s + d = 43

2d - 5 + d = 43

Combine like terms:

3d - 5 = 43

Add 5 to both sides:

3d = 48

Divide 3 to both sides:

d = 16

Plug this back into any of the two equations to find 's':

s + d = 43

s + 16 = 43

Subtract 16 to both sides:

s = 27

So Dunk scored 16 points and Stilt scored 27 points.
4 0
3 years ago
A​ bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard devia
Butoxors [25]

Answer:

Probability that their mean is above 215 is 0.0287.

Step-by-step explanation:

We are given that a bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50.

For this, 40 different applicants are randomly​ selected.

<em>Let X = ratings for credit</em>

So, X ~ N(\mu=200,\sigma^{2}=50^{2})

Now, the z score probability distribution for sample mean is given by;

         Z = \frac{X-\mu}{\frac{\sigma}{\sqrt{n} } } ~ N(0,1)

where, \mu = population mean = 200

           \sigma = standard deviation = 50

           \bar X = sample mean

           n = sample of applicants = 40

So, probability that their mean is above 215 is given by = P(\bar X > 215)

    P(\bar X > 215) = P( \frac{X-\mu}{\frac{\sigma}{\sqrt{n} } } > \frac{215-200}{\frac{50}{\sqrt{40} } } ) = P(Z > 1.897) = 1 - P(Z \leq 1.897)

                                                         = 1 - 0.97108 = 0.0287

Therefore, probability that their mean is above 215 is 0.0287.

5 0
3 years ago
6. What is the slope of a line that passes through (- 4, - 13) and (19, 11) ?
rodikova [14]
24/23. it doesn’t seem right because it’s a big fraction, but that’s it.

3 0
2 years ago
Other questions:
  • Write 0.326 in two other ways.
    13·2 answers
  • I’ve a always been a visual learner so can someone’s help me out with this online math
    15·1 answer
  • How are your suppose to simplify 4y-y
    14·2 answers
  • Write words to match expression. <br> 36 divide by 4
    13·2 answers
  • What is 2+2+2-2*2 but has the square of 4
    8·2 answers
  • Haley had 56 dollars she spent 5/8 of her money on a new shirt how much money did she have left after buying the shirt
    8·1 answer
  • How many minutes are in 2/4 if an hour
    14·2 answers
  • Which expressions are equivalent? 3x + 5x and 8x 3(x + 4) and 3x + 12 a + b + a and 2a + b 18x + 2y and 15x + 3x + 2x 3a + 4a +
    5·1 answer
  • “please help me! I will mark you brainly”
    6·1 answer
  • Round 27.2847 to the nearest a. tenth and b. hundredth. SHOW YOUR WORK AND NO LINKS PLEASE, THANK YOU!​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!