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
Romashka [77]
3 years ago
9

Simplify the expression. (x^2 - 9)/(x^2 + 2x - 15)

Mathematics
1 answer:
tia_tia [17]3 years ago
4 0

Answer:

We have

\frac{x^2-9}{x^2+2x-15}

\frac{\left(x+3\right)\left(x-3\right)}{x^2+2x-15}

\frac{\left(x+3\right)\left(x-3\right)}{\left(x-3\right)\left(x+5\right)}

\frac{x+3}{x+5}

∴The answer is D

You might be interested in
Don't know how to express the value of X as any of those answer choices
Alekssandra [29.7K]

9514 1404 393

Answer:

  x = √(w(w+z))

Step-by-step explanation:

The idea with a right-triangle figure of this sort is that all of the triangles are similar. Here, x is the short side of ∆ABC, and the hypotenuse of ∆BDC. This suggests you want to write a similarity statement involving the short side and hypotenuse.

  BC/AC = DC/BC . . . . . short side/hypotenuse

  BC² = AC·DC . . . . . . cross multiply

  x² = (w+z)w . . . . . . substitute letter values

Taking the square root and rearranging to the form of the applicable answer choice, this is ...

  \boxed{x=\sqrt{w(w+z)}}

3 0
3 years ago
A miners' cage of mass 420 kg contains 3 miners of total mass 280 kg. The cage
svp [43]

Answer:

5817 Newtons.

Step-by-step explanation:

Total mass of the cage + the miners = 700 Kg which is a downward force of  700g N.

The net downward force = 700g - T where T is the tension (force) in the cable. The g = acceleration due to gravity = 9.81 m s-2.

We  calculate the  acceleration of the cage by using an equation of motion:

Distance = ut + 1/2 a t^2     where u = initial velocity , t = time and a = acceleration:

75 = 0(t) + 1/2 a (10^2)

50a =  75

a = 1.5 m s-2.

So using Newtons second law of motion

Force = mass * acceleration:

700*9.81 - T = 700 * 1.5

T = 700 * 9.81 - 700*1.5

= 5817 N.

8 0
3 years ago
Answer both questions please, help me this hard, help me anyone????????
ivanzaharov [21]
Wait u live in FL 
cause i have one of those books too what grade are u in 
3 0
3 years ago
Jasmine took a cab Home form her office the cab charged a flat free of 4$ plus $2 per mile jasmine paid $33 for the trip how man
Lostsunrise [7]
33 - 4 = 29.

29 / 2 = 14.5

She traveled 14.5 miles in the cab.

Please mark Brainliest if it helped!

3 0
3 years ago
Read 2 more answers
Tell whether the ratios are equivalent: 3 days to 4 hours and 9 days to 12 hours. Show your work.
antoniya [11.8K]

Answer

No

Step-by-step explanation:

Since you 4x3=12 3x3 = 9

3 0
3 years ago
Read 2 more answers
Other questions:
  • I’m confused on this one
    8·1 answer
  • Triangle C D E is rotated 90 degrees to form triangle C prime D prime E prime.
    9·2 answers
  • The owner of Maumee Ford-Volvo wants to study the relationship between the age of a car and its selling price. Listed below is a
    13·1 answer
  • 24 = -3(2а — 15) — а
    7·1 answer
  • What percent is equivalent to<br> 4/20<br> 20%<br> 5%<br> 0.2 %
    13·1 answer
  • What is equivalent to 1/2 (2x + 7)
    7·1 answer
  • In the first year of production
    12·1 answer
  • Okie help help math math math
    7·1 answer
  • (e) The cost of building the ship was $153 000 000. Write 153 000 000 in standard form.​
    14·1 answer
  • Is collecting pennies dependent or an independent events?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!