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
GenaCL600 [577]
2 years ago
12

Reduce to lowest term. 2x^2- 18/x^2+4x-21​

Mathematics
1 answer:
Dovator [93]2 years ago
6 0

Answer:

\frac{2(x+3)}{x+7}

Step-by-step explanation:

Given

\frac{2x^2-18}{x^2+4x-21} ← factorise numerator and denominator

2x² - 18 ( factor out 2 from each term )

= 2(x² - 9) ← difference of 2 squares

= 2(x - 3)(x + 3)

and

x² + 4x - 21 = (x + 7)(x - 3) , then

= \frac{2(x-3)(x+3)}{(x+7)(x-3)} ← cancel common factor (x - 3) on numerator/ denominator

= \frac{2(x+3)}{x+7}

You might be interested in
48 students is 80​% of how many​ students?
mash [69]

Answer:

60

Step-by-step explanation:

let X be the total number of students.

48÷x *100 = 80

4800= 80x

X = 60 students

4 0
3 years ago
Given that z is a standard normal random variable, find the value of z for each situation. a. The area to the right of z is 0.01
otez555 [7]

Answer: =1.34

Step-by-step explanation:

In standard density curve

P(Z<z) = Area left of z, P(Z>z) = area right of z.

P(Z<z) +P(Z>z) =1

Given:  z is a standard normal random variable.

To find : value of z if rea to the right of z is 0.01.

i.e. P(Z>z) =0.01

P(Z<z) =1-0.01 = 0.09

from z-score table, z value for this is 1.34.

Hence, z= 1.34

8 0
2 years ago
Period:<br>7x-9-11=3x+4+2x​
vazorg [7]

Answer:

x=12

Step-by-step explanation:

combine like terms

7 0
3 years ago
Read 2 more answers
What is <br> P =4s when p= 64<br> Missing variable
Fantom [35]

Answer:

s=16

Step-by-step explanation:

P=4s

Put P=64

64=4s

s=16

4 0
3 years ago
A checker board has 64 squares. Each checker is 1/4 inch thick. If you place 1 checker on one corner of the checker board, then
almond37 [142]

Answer:

50%

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Which location does the point (0, 4)​ represent on the graph below?
    13·2 answers
  • Tommorow I have maths exam can anyone help me please grade 9 cbse
    14·1 answer
  • How is 9/5 expressed as the sum of a whole number and fraction
    13·1 answer
  • What is the area of a right triangle with a base length of 4 inches and height of 4 inches?
    8·2 answers
  • What is the definition of an irrational number????
    15·1 answer
  • Paloma used these steps to solve the equation 6x+5=3(2x+1). Which choice describes the meaning of her result, 2=0?
    11·2 answers
  • ASAP WHO EVER ANSWERS THIS WILL BE MARKED BRANLIEST
    11·1 answer
  • PLEASE HELP!! (Give reasonable answer)
    14·1 answer
  • What is m∠G to the nearest tenth? A right angle triangle EFG. The length of EF is 28.2 and GF is 45.8. Angle GFE is given as 90
    13·1 answer
  • In a café, I order a cup of tea and a piece of cake and it costs £1.10. The next time I order 2 cups of tea and one piece of cak
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!