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
Volgvan
2 years ago
7

Solve the following: 3x + 7 = 5x - 1 X =

Mathematics
1 answer:
dexar [7]2 years ago
7 0

Answer:

x= 4

Step-by-step explanation:

3x + 7 = 5x - 1

combine the like numbers: add 1 to the other side, isolating 5x

3x + 8 = 5x

Subtract 3x from 5x, isolating 8

8 = 2x

divide

4 = x

Check if it works

3(4) + 7 = 5(4) - 1

19 = 19

Yes, it is correct

You might be interested in
The function P(x) = –0.015x^2 + 1.2x – 11.5 gives the profit, in thousands of dollars, when a company sells a new product at x d
dlinn [17]

Answer:

The profit decreases by $ 375 for every $ 1 increase in the selling price.

Step-by-step explanation:

From the definition of the secant line we get that the average rate of change of P(x) = -0.015\cdot x^{2}+1.2\cdot x -11.5, where x is the selling price of the product, measured in dollars per unit, is:

r = \frac{P(55)-P(50)}{55-50} (1)

Now we evaluate the function at each bound:

x = 50

P(50) = -0.015\cdot (50)^{2}+1.2\cdot (50)-11.5

P(50) = 11

x = 55

P(55) = -0.015\cdot (55)^{2}+1.2\cdot (55)-11.5

P(55) = 9.125

Then, the average rate of change is:

r = \frac{9.125-11}{55-50}

r = -0.375

Hence, the profit decreases by $ 375 for every $ 1 increase in the selling price.

8 0
2 years ago
Jordan fills several bags with oranges. This line plot shows the weight of each bag.
xz_007 [3.2K]

Answer:

2 1/2

Step-by-step explanation:

The heaviest bag weighs 4 pounds, and the lightest bag weighs 1 1/2.

4 can be converted to 8/2 and 1 1/2 can be converted to 3/2.

8/2-3/2=5/2.

5/2 converts to 2 and 1/2 or 2.5

4 0
3 years ago
What could be the base shape of a cylinder?
Len [333]

Answer:

Circle

Step-by-step explanation:

I believe the correct answer is the base shape of a cylinder would be circle. a cylinder is a closed solid that has two parallel (usually circular) bases connected by a curved surface.This is the most common kind, and if someone just says 'cylinder' this is usually what they mean. The bases can however be almost any curved shape, but the most common alternative to a circle is an ellipse. The shape would then be called an 'elliptical cylinder'. The vertical cross-section of a cylinder is a rectangle, and the horizontal cross-section is a circle.

Hope that was helpful.Thank you!!!

7 0
3 years ago
Read 2 more answers
Elyse has $18 on a gift card that she can use to rent movies online. The graph at the right shows the amount of money remaining
blsea [12.9K]

Answer:

see the explanation

Step-by-step explanation:

The complete question in the attached figure

Let

x ----> the number of movies

y ----> the amount of money remaining on her gift card

we know that

The slope of the linear equation is equal to the unit rate

take two points from the graph

(0,18) and (2,12)

Find the slope

m=(12-18)/(2-0)

m=(-6)/(2)=-\$3\ per\ movie ---> is negative because is a decreasing function

That means -----> Each movie she rents cost her $3, so her  gift card balance will decrease $3 for every movie rented

The linear equation is equal to

y=-3x+18

For y=0

0=-3x+18

x=6

so

6 is the maximum number of movies that Elyse can rent on line

6 0
3 years ago
Which of the following equations could be used to solve for x in the triangle shown?
erastovalidia [21]
Sin ( theta ) = opposite / hypotenuse
sin ( 37° ) = 13 / x
5 0
3 years ago
Read 2 more answers
Other questions:
  • In the accompanying diagram of parallelogram ABCD, LaTeX: m\angle A=x+17 m ∠ A = x + 17 and LaTeX: m\angle C=2x-4 m ∠ C = 2 x −
    15·1 answer
  • Please someone help me answer this! Rico is making 6 batches of salsa. Each batch needs 3/4 cup of corn. He only has 1/4 cup mea
    12·1 answer
  • Roz bought 3 dozen bagels and a $0.69
    10·2 answers
  • What is the discriminant and the roots of <br>2x² - 10x + 8 = 0?​
    9·2 answers
  • I need help with my home work we can settle on a google meets mic on cam on
    13·1 answer
  • the sum of three numbers is 2100. the first number x is equal to the sum of the other two (y and z) which are equal to each othe
    10·1 answer
  • Area of a rectangle with a width of 36cm and a perimeter of 80cm
    15·1 answer
  • A candy distributor needs to mix 10% a fat content chocolate with 40% fat content chocolate to create 200 kg of a 16% fat conten
    14·1 answer
  • You were given 10 math problems for homework. You completed 6/10 of them at school. Which equation shows how to find the fractio
    8·2 answers
  • ASAP PLS I NEED IT AND TY
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!