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
Marat540 [252]
2 years ago
6

Show how to solve 2x+5=13, justify the steps

Mathematics
2 answers:
liberstina [14]2 years ago
8 0

Answer:

The answer is 4

Step-by-step explanation:

2x + 5 = 13

Now, Subtract 5 from both side we get,

2x + 5 - 5 = 13 - 5

2x = 8

Then, Divide both side by 2 we get,

2x/2 = 8/2

x = 4

Thus, The answer is 4

<u>-TheUnknownScientist</u><u> 72</u>

vichka [17]2 years ago
8 0

Answer:

x = 4

Step-by-step explanation:

2x + 5 = 13

We must solve to find the value of 'x'. Take  5 to the right hand side to find x.

2x  = 13 - 5

2x = 8

Take 2 in the '2x' to the right hand side to finally solve and find the value of x.

x = 8 ÷ 2

x = 4

<em>[ Note: when you take a term to the other side of equation, the sign will be the opposite of what it was before. Fore example of 2x was positive on the left hand side of the equation, it will be negative on the right hand. Same goes with multiplications and divisions. If 2x was multiplied with another term on the left hand, it will divided when shifted to the right hand. ]</em>

You might be interested in
Please help me please I need help!!!!!!!!!!!!!!!!!!!hshdjdndndbdbnfjfkfkfkdkdkfkfjdjfiid
Serggg [28]

y = (x - 2)(x + 5)    First I would multiply (x - 2) and (x + 5) together

y = x² + 5x - 2x - 10

y = x² + 3x - 10


Next I would plug in a number for x to find its y value. I will plug in 0

y = 0² + 3(0) - 10

y = -10

(0, -10)   [this is the y-intercept (the y value when x = 0)]


Your answer is Graph A because the y-intercept is (0,-10)

6 0
3 years ago
The cylinder’s diameter and height are both 39.2 millimeters. What is the surface area of this cylinder?
Dominik [7]

Answer:

A = 7,241.2454026112  square mm.

or exact : A = 2,304.96‬*π  sq mm

Step-by-step explanation:

Cylinder formula:   A = π* r^2 +  2 *π * r* h  +  π*r^2

is the surface area.

d = 2r = 39.2 mm

h = 39.2 mm

r = 19.6 mm

A = π* r^2 +  2 *π * r* h  +  π*r^2

A = 2* π* (19.6)^2  + 2π (19.6)*(39.2)  

A = 2,413.748467537 +  4,827.496935

A = 7,241.2454026112  square mm.

or

A =  2*pi* (768.32‬ + 384.16)

A = 2*1,152.48‬* pi

A = 2,304.96‬*π  sq mm

8 0
3 years ago
What is the area of the kite? (This was all that was given)
lesya [120]
The area of a kite is (1/2) * x * y, where x and y are the length of the two diagonals. In this case, the length of the two diagonals are 10 ft and 2 ft.
<span>Plug that in the equation, we get 1/2 * 2 * 10. We multiply the 2 and 10 first to get 20, that leaves us with 1/2 x 20, which is 10, so the area of this kite is 10 ft squared.</span>
5 0
3 years ago
Read 2 more answers
Pearson realize help please!
yulyashka [42]

Answer:

I think it would be 15

Step-by-step explanation:

Because if you split the number line into 6 different sections (with the 15 on the left side and the 16 on the right side) and shade/fill in 2 of those, you would be closer to 15.

6 0
2 years ago
Henry's patio is in the shape of a rectangle. He said the perimeter of the patio is 48 feet . He knows that one side is 9 feet w
ss7ja [257]

Answer:

2 sides of the patio are 9ft and another 2 sides are 15ft

Step-by-step explanation:

To solve this problem we have to know thata rectangle has 4 sides and 2 of them are equal to each other

This is the formula to calculate perimeter

p = perimeter 48 ft

a = side a = 9 ft

b = side b

p = 2a + 2b

we replace the known values

48ft = 2*9ft + 2b

48ft = 18ft + 2b

48ft - 18ft = 2b

30 / 2 = b

15 = b

2 sides of the patio are 9ft and another 2 sides are 15ft

8 0
2 years ago
Other questions:
  • -144 is -1 x 2a x 3b what is the sum of a+b?
    5·1 answer
  • What fraction of the original sample remains ?
    6·1 answer
  • Aliyah wants to estimate the value of the quotient of 5.68 x 10^-3 and 8.54 x 10^-9. Which statement about the value is true?
    5·2 answers
  • A painter used 20 drops of red paint to make a certain shade of pink.How many drops of white paint should he add to 12 drops of
    7·1 answer
  • A restaurant offers 6 appetizers and 12main courses. How many ways can a person order a​ two-course meal?  
    10·2 answers
  • Help will mark brainliest
    6·1 answer
  • Help please. If correct I’ll mark as brainliest but I rlly need help.
    15·1 answer
  • I’m confused on this type of math
    11·2 answers
  • What is the domain and range of the relation shown in the table?
    10·1 answer
  • PLEASE HELP URGENT
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!