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
Leya [2.2K]
2 years ago
9

I need help with the first row it’s all talking about the triangle on Monday

Mathematics
1 answer:
Dvinal [7]2 years ago
4 0
Where is the question
You might be interested in
would someone be able to explain to me how to solve these problems? I don't need the solutions, I just need an explanation. I ne
Leni [432]
The first 3  are examples of the difference of 2 squares so you use the identity 
a^2 - b^2 = (a + b)(a - b)
x^2 - 49 = 0 
so (x + 7)(x - 7) = 0
so either x + 7 = 0 or x - 7 = 0
giving x = -7  and 7.
Number 7 reduces to 3x^2 =12, x^2  = 4 so x = +/- 2
Number 8  take out GCf (d) to give 
d(d - 2)  = 0   so d = 0 ,  2
9 and 10 are more difficult to factor
you use the 'ac' method  Google it to get more details
2x^2 - 5x + 2
multiply first coefficient by the constant at the end 
that is 2 * 2 =  4
Now we want  2 numbers  which when multiplied give + 4 and when added give - 5:-    -1 and -4  seem promising so we write the equation as:-

2x^2 - 4x - x + 2 = 0

now factor by grouping 
2x(x - 2) - 1(x - 2) = 0

(x - 2) is common so

(2x - 1)(x - 2) = 0
and 2x - 1 = 0 or x - 2 = 0  and now you can find x.

The last example is solved in the same way.


8 0
3 years ago
I need help with 8 9 thanks
sasho [114]
#8: $900. (I found this answer by multiplying 3000 and 0.3 by the way)
#9: 160 miles. I found this answer by multiplying 80 by two, since two halves/50% make a whole or 100%.
3 0
3 years ago
Is <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B3%7D%7B6%7D%20" id="TexFormula1" title=" \frac{3}{6} " alt=" \frac{3}{6} "
STALIN [3.7K]

Hey!

-----------------------------------------

Answer: Yes 3/6 is rational!

-----------------------------------------

Why? Well, because 3 and 6 are integers that don't repeat. 3/6 simplifies to 1/2 or 0.5 which doesn't repeat so it's rational.

-----------------------------------------

Hope This Helped! Good Luck!

8 0
3 years ago
3. A car starts from rest and accelerates uniformly over a time of 6.21 seconds
Klio2033 [76]

We have,

t = 6.21 s

s = 111 m

u = 0 m/s

To determine: "a" of the particle.

We know,

s = ut + ½ at²

⇒ s = ½ at²

⇒ a = 2s/t²

⇒ a = [2(111 m)]/(6.21 s)²

⇒ a = (222 m)/(38.5641 s²)

⇒ a ≈ 5.75 m/s²

5 0
2 years ago
A) Compare the y-intercepts of f(x) and g(x). Use complete sentences.
Lady bird [3.3K]

Answer:


Step-by-step explanation:

a) y-intercept is when x=0


f(0)


=1/(0-3)


=-1/3


g(0)=0 from the graph


b) vertical asymptotes are vertical lines that f(x) and g(x) get close but do not exist there


8 0
3 years ago
Read 2 more answers
Other questions:
  • A cat and a dog have a race. The cat’s strides are 30% shorter than the dog’s but it makes 30% more strides than the dog. Which
    11·2 answers
  • GEOMETRIC PROBABILITY URGENT?
    15·1 answer
  • each class at Briarwood elementary collected at least 54 cans of food during the food drive if there are 29 classes in the schoo
    9·2 answers
  • 600/480 as a fraction in m/n form
    6·1 answer
  • Given f(x) and g(x) = k•f(x), use the graph to determine the value of k
    5·1 answer
  • The faces of a triangular pyramid have a base of 5 cm and height of 11 cm. What is the lateral area of the pyramid?
    6·1 answer
  • Which coordinate does the axis of symmetry represent?
    14·1 answer
  • A moving firm charges a flat fee of $35 plus $30 per hour. Let y be the cost in dollars of using the moving firm
    13·1 answer
  • If AB = 15, what is the length of ?<br><br> 18<br> 16<br> 14<br> 12
    13·1 answer
  • Find the value of a that makes m||n
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!