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melisa1 [442]
3 years ago
10

Simplify: a+2a+3a+4a can somebody please help me

Mathematics
2 answers:
VARVARA [1.3K]3 years ago
8 0

Answer:

10a

Step-by-step explanation:

1a+2a+3a+4a=10a

MariettaO [177]3 years ago
8 0

Answer:

10a

Step-by-step explanation:

In this expression, when simplifying, it is key to always combine like terms.

In this case, as every term has a variable of ‘a’, you can add together the coefficient of ‘a’. A coefficient is a number infront of a variable (it can also sometimes be a variable).

Also in this expression, you might be wondering why you got the solution 9a instead.

The first ‘a’ in this expression seems as if it has no coefficient, but it actually does! It has a one in front of it! Because 1 time ‘a’ should be equal to ‘a’.

Therefore, your final answer is 10a.


Happy Learning :D

(Note :You can only do this when they have the same variable)

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Ne4ueva [31]

Answer: The answer is 16.

Step-by-step explanation:

The least common denominator means the same as least common multiple.

3, 6, 9, 12, 16

8, 16

2, 4, 6, 8, 10, 12, 14, 16

6 0
3 years ago
Read 2 more answers
Help with question 4 please
Juliette [100K]

Answer:     y=5                           x=11

abc=def                                      

ab=de                                         <b=<e

17y-8=12+13y                              11x-4=117

-13y        -13y                                  +4   +4

4y-8=12                                      11/11x=121/11

  +8  +8                                           x=11

4/4y=20/4

y=5

7 0
3 years ago
An architect built a scale model of a skyscraper using a scale in which 2 inches represents 48 yards. The height of the skyscrap
damaskus [11]
The correct answer is C, 15 inches. Please mark Brainliest if helpful. Thanks
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3 years ago
The density d of a substance is given by the formula d=mV, where m is its mass and V is its volume. Solve the formula for m.
NikAS [45]

Answer:m=d/V

Step-by-step explanation:

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5 0
4 years ago
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Have to find out what the angle x is respond ASAP pls
Sergeeva-Olga [200]

Answer: Angle x equals 19 degrees

Step-by-step explanation: We have two polygons, one with five sides and the other with eight sides. The question states that the pentagon has exactly one line of symmetry which means the line that runs down from point D to line AB divides the shape into exactly two equal sides. Hence angle A measures the same size as angle B (in the pentagon).

First step is to calculate the angles in the pentagon. The sum of angles in a polygon is given as

(n - 2) x 180 {where n is the number of sides}

= 3 x 180

= 540

This means the total angles in the pentagon can be expressed as

A + B + 84 + 112 + 112 = 540

A + B + 308 = 540

Subtract 308 from both sides of the equation

A + B = 232

Since we have earlier determined that angle A measures the same size as angle B, we simply divide 232 into two equal sides, so 232/2 = 116

Having determined angle A as 116 degrees, we can now compute the value of angle A in the octagon ABFGHIJK. Since the figure is a regular octagon, that means all the angles are of equal measurement. So, the sum of interior angles is given as

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= 6 x 180

= 1080

If the total sum of the interior angles equals 1080, then each angle becomes

1080/8

= 135 degrees.

That means angle A in the octagon measures 135, while in the pentagon it measures 116. The size of angle x is simply the difference between both values which is

x = 135 - 116

x = 19 degrees

3 0
3 years ago
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