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kirill115 [55]
3 years ago
14

What is the sum of fifteen and ten?

Mathematics
1 answer:
IrinaK [193]3 years ago
3 0
The sum of two numbers means that you need to add (+) them together,
so the sum of 15 and 10 is 15 + 10
  

.   1 5
+<u>  1 0 </u>
    2 5

The answer is 25

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Please I need the answer​
Vedmedyk [2.9K]

Answer:

x=4

Step-by-step explanation:

Simplifying

2(6x + 4) + -6 + 2x = 3(4x + 3) + 1

Reorder the terms:

2(4 + 6x) + -6 + 2x = 3(4x + 3) + 1

(4 * 2 + 6x * 2) + -6 + 2x = 3(4x + 3) + 1

(8 + 12x) + -6 + 2x = 3(4x + 3) + 1

Reorder the terms:

8 + -6 + 12x + 2x = 3(4x + 3) + 1

Combine like terms: 8 + -6 = 2

2 + 12x + 2x = 3(4x + 3) + 1

Combine like terms: 12x + 2x = 14x

2 + 14x = 3(4x + 3) + 1

Reorder the terms:

2 + 14x = 3(3 + 4x) + 1

2 + 14x = (3 * 3 + 4x * 3) + 1

2 + 14x = (9 + 12x) + 1

Reorder the terms:

2 + 14x = 9 + 1 + 12x

Combine like terms: 9 + 1 = 10

2 + 14x = 10 + 12x

Solving

2 + 14x = 10 + 12x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-12x' to each side of the equation.

2 + 14x + -12x = 10 + 12x + -12x

Combine like terms: 14x + -12x = 2x

2 + 2x = 10 + 12x + -12x

Combine like terms: 12x + -12x = 0

2 + 2x = 10 + 0

2 + 2x = 10

Add '-2' to each side of the equation.

2 + -2 + 2x = 10 + -2

Combine like terms: 2 + -2 = 0

0 + 2x = 10 + -2

2x = 10 + -2

Combine like terms: 10 + -2 = 8

2x = 8

Divide each side by '2'.

x = 4

Simplifying

x = 4

Hope it helps!

7 0
3 years ago
Read 2 more answers
which kind of proof requires you to prove that all but one of a set of possible alternatives are false? a. direct proof. b. elem
Olenka [21]

will I think it is A.direct proof. plz tell me if I am right


5 0
3 years ago
Read 2 more answers
There are 20 counters in a box.
Dahasolnce [82]

Answer:

9/20

Step-by-step explanation:

I'm assuming you have to give the probability as a fraction :)

6 + 5 = 11

20 - 11 = 9

9/20

4 0
3 years ago
A block is pulled 0.9 m to the right in 2.5 seconds. What is the blocks average speed?
inysia [295]

Answer:

Step-by-step explanation:

speed=distance /time=0.9/2.5=90/25=3.6 m/s

8 0
3 years ago
A tortoise challenges a hare to a four-hour race. The hare is so confident of winning that he allows the tortoise to start with
Colt1911 [192]

Count the distances that a tortoise and a hare completed.

1. Tortoise. The speed of the tortoise is constant and equal to 4 miles per hour. Then in 4 hours the tortoise completed 4·4=16 miles. It has a 10-mile lead, then the distance that the tortoise completed in total is 10+16=26 miles.

2. Hare. The speed of the hare is constant and equal to 14 miles per hour.  But the hare stops for a two-hour nap, then the hare was 4-2=2 hours running. Then the distance that hare completed is 14·2=28 miles.

3. As you can see the hare gets farther than tortoise 2 miles.

5 0
3 years ago
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