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leonid [27]
3 years ago
6

What is the sum?

Mathematics
1 answer:
gavmur [86]3 years ago
5 0

Answer:

The answer is option D.

Step-by-step explanation:

First we must first find the LCM

the LCM of x² - 9 and x + 3 is x² - 9

So we have

\frac{3}{ {x}^{2} - 9 }  +  \frac{5}{x + 3}  =   \frac{3 + 5(x - 3)}{ {x}^{2}  - 9}  \\  \\  =  \frac{3 + 5x - 15}{(x + 3)(x - 3)}    \\  \\  = \frac{5x - 12}{(x +  3)(x - 3)}

Hope this helps you

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9. You roll a standard number cube (with 6 sides) 8 times. The results are 5, 1, 2, 4, 6, 3, 5, 5
scoray [572]

Answer:

a) we have 5 there 3 times so answer is 3/8

b)

for 8 times rolling 3 times 5 we have

for 40 times rolling will 15 times 5

Step-by-step explanation:

a) we have 5 there 3 times so answer is 3/8

b)

for 8 times rolling 3 times 5 we have

for 40 times rolling will 15 times 5

8 0
2 years ago
Pls answer fast will give brainlest
Lunna [17]

Answer:

Step-by-step explanation:

7)

7(2.8(4.2))/2=41.16m^3

8)

14(6(7(6.1).5))=1793.4cm^3

6 0
3 years ago
3. In a right triangle, the altitude from the right angle to the hypotenuse divides the
stiks02 [169]

Answer:

Step-by-step explanation:

7 0
2 years ago
Find an equation for the described linear function.
Sindrei [870]
Step 1: Find the slope of 3x - 7y = 6

 3x - 7y = 6
- 3x        -3x
___________
-7y = -3x + 6
-------------------
          -7

y = 3/7 x - 7/6

So the slope from this equation is 3/7. Since the line is going to be perpendicular, this slope needs to be the opposite reciprocal. In order to do this, you need to flip 3/7 upside down and make it negative.

Step 2: Use point - slope form to find the y - intercept from the ordered pair
(0, -6/7).

Formula for point - slope form is y - y1 = m (x - x1)

      y - (-6/7) = -7/3 (x - 0)
      y + 6/7 = -7/3 (x - 0)
      y + 6/7 = -7/3x + 0
         -6/7             -6/7
----------------------------------
       y = -7/3x - 6/7

This step proves that the y - intercept has to be -6/7.

Step 3: Your final answer should be y = -7/3 - 6/7. 






5 0
3 years ago
What is the radius of a circle that has a circumference of 3.14 meters?​
prohojiy [21]

Answer:0.5

Step-by-step explanation:

circumference=3.14m

π=3.14

radius=circumference ➗ (2xπ)

radius=3.14 ➗ (2x3.14)

radius=3.14 ➗ 6.28

radius=0.5

radius=0.5m

8 0
3 years ago
Read 2 more answers
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