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tia_tia [17]
3 years ago
9

(8x+5)+(4x-3) what is that equal to

Mathematics
2 answers:
Anna [14]3 years ago
6 0

Answer:

12x + 2

Step-by-step explanation:

To find what the expression equals, you can collect like terms. This means to do the operations (add or subtract) the numbers that have the same variables.

(8x + 5) + (4x - 3)        Remove brackets to add a binomial (2-term brackets)

= 8x + 5 + 4x - 3        Collect like terms

= 8x + 4x + 5 - 3        I rearranged so you can see which terms are alike

= 12x + 5 - 3        Collected like terms with "x" (8x + 4x = 12x)

= 12x + 2        Collected like terms with no variables (5 - 3 = 2)

Therefore (8x + 5) + (4x - 3) is equal to 12x + 2.

If you want, you can also find another equal expression by factoring. Since "12x" and "2" are both divisible by the factor 2, you can <em>take it out</em> and put the other numbers in a bracket.

12x + 2

= 2(12x/2 + 2/2)

= 2(6x + 1)        This is equal, but in factored form.

nata0808 [166]3 years ago
3 0

Answer:

12x+2

Step-by-step explanation:

8x+4x=12x

5-3=2

12x+2

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Cierra says that 5/6 times 5/6 equals 25/6 is that true?
Sholpan [36]

Answer:

No

Step-by-step explanation:

5/6 * 5/6 = .6944

25/6 = 4.1667

8 0
3 years ago
What is the value of the fourth term in a geometric sequence for which a1=10 and r =0.5
Lena [83]

Answer: 1.25

Step-by-step explanation:

The explicit formula for the sequence is a_{n}=10(0.5)^{n-1}

Substituting in n=4,

a_{4}=10(0.5)^{4-1}=\boxed{1.25}

4 0
2 years ago
A room is 20 feet by 25 feet with a 10-foot ceiling. If Mickey paints the walls and the ceiling, how much surface area will he c
Svetradugi [14.3K]

Answer:

1400ft²

Step-by-step explanation:

Given

Room Dimension: 20 ft by 25 ft by 10 ft

Where Length = 20 ft

Width = 25 ft

Height = 10 ft

Required

Surface area of painted walls and ceiling

We'll assume that the room is rectangular in shape and all 4 sides are covered.

<em>This means that Mickey will paint 4 walls and 1 ceiling.</em>

The dimension of the 2 of the 4  walls is as follows;

20ft by 10ft, 25ft by 10ft,

Because opposite sides of a rectangle are equal, the dimension of the remaining 2 walls is: 20ft by 10ft, 25ft by 10ft

Calculating the area of the 4 walls;

Area = 20ft * 10ft + 25ft * 10ft + 20ft * 10ft + 25ft * 10ft

Area = 200ft^2 + 250ft^2 + 200ft^2 + 250ft^2

Area = 900ft^2

The dimension of the ceiling is as follows:

20ft by 25ft

Calculating the area of the ceiling

Area = 20ft * 25ft

Area = 500ft^2

So, the area Micky will cover = Area of 4 walls + Area of ceiling

Total Surface Area = 900ft^2 +500ft^2

Total Surface Area = 1400ft^2

Hence, Micky will cover 1400ft²

6 0
3 years ago
Please explain. What is the value of x? 3x−8=8x+42 Enter your answer in the box. x = ?
Hatshy [7]
X=10 for your answer
4 0
3 years ago
Read 2 more answers
9. Find the measure of angle<br> a.<br> a<br> 36°<br> 57°
sammy [17]
A is equal to 87 degrees. You get this answer since all triangle angle measurements must equal 180 when combined. So you add
36+57=93
180-93=87
A=87
8 0
3 years ago
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