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ASHA 777 [7]
3 years ago
7

Simplify (3x − 8) + (2x + 5) − (4x − 8). A) x − 11 B) x + 5 C) x + 21 D) 9x + 5

Mathematics
2 answers:
lozanna [386]3 years ago
6 0

Answer:

B

Step-by-step explanation:

3x-8+2x+5-4x+8

3x+2x-4x    -8+5+8

     x        +        5      

x+5

timama [110]3 years ago
4 0
The answer is (A) as
When expanded we get:
3x - 8 + 2x + 5 - 4x - 8
After collecting the like terms:
3x + 2x - 4x - 8 + 5 - 8
Now simplify (step by step)
1) 5x - 4x - 8 + 5 -8
2) x - 8 + 5 - 8
3) x -16 + 5
4) x -11

Therefore the answer equals (x - 11) which is option (A)
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Answer:327e823

Step-by-step explanation:

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3 years ago
What is the circumference
Stolb23 [73]
There are two (equivalent) formulas for the circumference of a circle:

C = 2 pi r, where r is the radius of the circle

C = pi d, where d is the diameter of the circle

In this particular problem, however, we're dealing with arc length.  For the shown central angle "theta" = 160 degrees, the arc length is 42 cm.
Knowing this enables us to calculate the radius or diameter of the circle.

Arc length = s = (radius) (central angle, in radians, not degrees)

First, convert 160 degrees to radians:  160 deg     pi rad
                                                              ----------- * ------------ = (8/9) pi rad
                                                                    1         180 deg

Then 42 cm =  r *(8/9) pi rad

Solve for the radius (r):  divide 42 cm by (8/9) pi rad

Then use the formula for circumference introduced earlier:

C= 2 pi r                   Substitute [42 cm / ( (8/9) pi rad )] for r.

Simplify your result, and you will then have the circumference, C, in cm.
6 0
3 years ago
Cris borrowed money from her brother 6 months ago. She now owes him 56.50. She has not borrowed and she is paying 15.75 on her d
densk [106]

Answer:2.19 monthd

Step-by-step explanation:

Cris borrowed money from her brother 6 months ago. She now owes him 56.50

Let x= original money borrowed from her brother 6 months ago

She has not borrowed and she is paying 15.75 on her debt each month for the last 6 months. This means in the past 6 months,she has paid 15.75×6= 94.5

She now owes him 56.50. This means original money,x-56.50 =94.5

x = 94.5+56.50=151

If she now increases her monthly payment to 25.75, let the number of months be y, she will pay 25.75y in y months

25.75y =56.50

y =2.19 months

7 0
3 years ago
Two sides of a triangle measure 27 inches and 32 inches. Which could represent the length of the third side?
charle [14.2K]

Answer:

Step-by-step explanation:

The third side could have dimension x

32 - 27 < x < 32 + 27

         5 < x < 59

There are a few special triangles

Equilateral triangle could have legs

27, 32, <u>27</u>

or

32, 27,<u> 32</u>

A right triangle could have the third side

√(27² + 32²) = <u>√1753</u> which is about<u> 41.87</u>

or

√(32² - 27²) = <u>√295</u> which is about <u>17.18</u>

Notice all these fit within the original limits specified.

3 0
2 years ago
Read 2 more answers
The sum of 5.75 and half a number is -5. What is the number? Please help!
barxatty [35]

Answer:

5.75 +  \frac{x}{2}  =  -  5 \\  \frac{x}{2}  =  - 5 - 5.75 \\  \frac{x}{2}  =  - 10.75 \\ x =  - 21.5

4 0
2 years ago
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