1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Marat540 [252]
3 years ago
9

Find the sum 7a/a+5 + a/a-2

Mathematics
1 answer:
IRINA_888 [86]3 years ago
8 0

\dfrac{7a}{a+5}+\dfrac{a}{a-2} \\\dfrac{7a(a-2)+a(a+5)}{(a+5)(a-2)} \\\boxed{\dfrac{a(8a-9)}{(a+5)(a-2)}}

Hope this helps.

You might be interested in
2 7/9 × 1 1/5 ÷ 2 1/2
Anna007 [38]

Answer

5/36 (\frac{5}{36})

7 0
3 years ago
Read 2 more answers
If two points known on the line AB in the coordinate plane is (7,15) and (18,42), calculate the following..
Ksju [112]

<u>Answer:</u>

  • Slope = 27/11
  • AB = 29.15 u

<u>Step-by-step explanation:</u>

<u>Given :- </u>

  • Two points are given to us .
  • The points are A(7,15) and B(18,42)

<u>To Find</u> :-

  • The slope of the line .
  • The length of line AB .

We can find the slope of the line passing through the points ( x_1,y_1) and ( x_2,y_2)as ,

\implies m = \dfrac{ y_2-y_1}{x_2-x_{1}}

  • Plug in the respective values ,

\implies m = \dfrac{ 42-15}{18-7} \\\\\implies \boxed{ m = \dfrac{ 27}{11 }}

<u>Hence the slope of the line is 27/11 .</u>

\rule{200}2

<u>Finding the length of AB :-</u>

  • We can find the distance between them by using the Distance Formula .

\implies Distance =\sqrt{ (x_2-x_1)^2+(y_2-y_1)^2} \\\\\implies Distance =\sqrt{ (18-7)^2+(42-15)^2 }  \\\\\implies Distance =\sqrt{ 11^2 + 27^2 } \\\\\implies Distance =\sqrt{ 121 + 729 } \\\\\implies Distance = \sqrt{ 850} \\\\\implies \boxed{ Distance = 29.15 \ units }

<u>Hence the length of AB is 29.15 units .</u>

5 0
3 years ago
Drag and drop the answer into the box to identify each function as linear, exponential, or neither.
katrin2010 [14]
<span>​x​ 2 3 4
f(x) 5.5 7 8.5 </span>

The first function is linear. When you subtract 5.5 from 7, you get 1.5 and when you subtract 7 from 8.5 you also get 1.5. That's how we know it's a linear function because there's clearly pattern. HOWEVER, if you had 5.5, 7, and 9 that would not be a linear function. Why? Because when you take away 7 from 9 you get 2. In order for it to be a linear function you have to get the same exact number when you subtract. 

<span>x​ 0 3 6
f(x) 1 8 64</span> 

The second function is exponential because when you divide you get the exact same number. 8/1 = 8 and 64/8 = 8. So this is exponential. But if you had 72 instead of 64 it would not be an exponential function because there has to be a pattern. 

I hope this makes sense. Btw I had this question on my test too and this is correct. 
4 0
3 years ago
Read 2 more answers
Find the discontinues<br> F(x)= sin(x^2-2)
maks197457 [2]
.15(pi)=24-68(0) that is the answer hope it helps
3 0
3 years ago
Use the quadratic formula to find the exact solutions of x2 − 9x + 5 = 0.
Diano4ka-milaya [45]

Answer:

Step-by-step explanation:

All those words, when the math is so much clearer!

x = (9±√(9^2-4*1*5))/2 = (9±√101)/2

7 0
3 years ago
Read 2 more answers
Other questions:
  • Malcolm is driving 1,373 miles from Wichita to Charleston for a family Reunion. He drives 468 miles the first day and 434 miles
    6·1 answer
  • What is the area of the polygon below?
    15·2 answers
  • How do you write 49 in scientific notation? ____× 10^____
    13·2 answers
  • If f(x) = 4 – x2 and g(x) = 6x, which expression is equivalent to (9 - 1)(3)?
    12·2 answers
  • Find the product of (2a + 3b) (2a + 3b)
    11·2 answers
  • Ryan has x stamps in his collection if he was 6 times as many stamps as penny, how many stamps does penny have in her collection
    7·1 answer
  • 3 What force is needed to accelerate a 0.5-kg football at a rate<br> of 40 m/s 2?
    14·1 answer
  • Benjamin designed the bathroom tiles in his home using the tile shown.
    15·2 answers
  • is planning a rectangular rose garden. The garden will be 204 roses wide and 18 roses long. He has 3,600 roses. Does he have eno
    7·2 answers
  • The sum of 9 and a number
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!