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
Blababa [14]
3 years ago
11

I'm not sure how to do these equations

Mathematics
1 answer:
Gennadij [26K]3 years ago
5 0
\frac{x^2+4x+3}{x^2-4x-21} =  \frac{(x+3)(x+1)}{(x+3)(x-7)}  =  \frac{x+1}{x-7}
\frac{x^2+10x+16}{x^2+13x+40} =  \frac{(x+8)(x+2)}{(x+8)(x+5)} =  \frac{x+2}{x+5}
You might be interested in
Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.
Hatshy [7]

Answer:

The change in the area of the rectangle is 0 square feet

Step-by-step explanation:

To solve this problem we have to calculate the area of ​​the two rectangles that give us

first we have to know the formula to calculate the area of ​​a rectangle

a = area

l = length  = 12ft

w = width = 5ft

a = l * w

we replace the known walues

a = 12ft * 5ft

a = 60ft²

we do the same with the other rectangle, but first we have to calculate its sides

w = 5ft - (5ft * 20/100)

w = 5ft - 1ft

w = 4ft

l = 12ft + (12ft * 25/100)

l = 12ft + 3ft

l = 15ft

a2 = 15ft * 4ft

a2 = 60ft²

to calculate the change in the area we subtract (a - a2)

a - a2 =

60ft² - 60ft² = 0ft²

3 0
3 years ago
Graph the function f(x) = 2√x +3.
Nikolay [14]

The graph is shown in the attached image.

8 0
2 years ago
Express the ratio as a fraction in it's lowest terms.3kg to 800g​
MA_775_DIABLO [31]

Answer:

15 / 4

Step-by-step explanation:

1 kg = 1000 g

3 kg

= 3 x 1000

= 3000 g

3kg to 800g

= 3kg : 800g

= 3000 : 800

= 30 : 8

= 30 / 8

= 15 / 4

6 0
3 years ago
Read 2 more answers
What is the area of a rectangle with a length of 6 2/5 centimeters and a width of 2 3/5 centimeters?
Advocard [28]

Answer: 16\frac{16}{25} cm^2

Step-by-step explanation:

The formula for area is <em>length × width = area</em>

Sub in the values for length and width to solve

6\frac{2}{5}×2\frac{3}{5}=16\frac{16}{25}

<em />

6 0
2 years ago
What is the median of the following data values?
Eduardwww [97]

Answer:

B

Step-by-step explanation:

Emliminate values of the set at the sam time starting from outside to inside. The reamining two are 17 and 22. Take the average of those two by adding them then dividing by 2 to get 19.5 as a final answer.

7 0
3 years ago
Read 2 more answers
Other questions:
  • A polygon with all sides always congruent
    5·2 answers
  • The cost of oranges in a grocery store is directly proportional to the number of oranges purchased. Jerri payed $2.52 for 6 oran
    15·1 answer
  • Find the unknown side length x write your answer in simplest radical form
    8·1 answer
  • What is the exact value of the expression the square root of 72 − the square root of 8 + the square root of 128?
    8·2 answers
  • Does the data suggest a linear, quadratic, or exponential model?
    7·1 answer
  • How many times would Thor jump in 2 hours if he jumped 3 times every 5 minutes?
    15·2 answers
  • PLEASE HELP! doing a test!
    13·1 answer
  • How do I solve 4/9x - 10 &gt; x/3 - 12 word for word steps?
    8·1 answer
  • .......................................................
    5·1 answer
  • Geraldo recently saw a newspaper ad for a new version of his laptop. the projected price is $400.00, and the laptop will be out
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!