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
frosja888 [35]
3 years ago
8

What are the solutions to x^2-13x+30

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
4 0
ax^2+bx+c=0  \\ \\
x^2-13x+30 = 0 \\ \\ D=b^2-4ac = 169-120=\sqrt{49} =7 \\ \\ x_{1/2} =  \frac{-b^2+/-\sqrt{D}}{2a} = \frac{13+/-7}{2*1} \\ \\ x_1 = \frac{13+7}{2} = 10 \\ \\ x_2 = \frac{13-7}{2} = 3
You might be interested in
PQR is reflected over the x-axis. What are the coordinates of Q’?
Vlad [161]

Answer:

(8,-2)

Explanation:

you reflect it over the x-axis

4 0
3 years ago
Read 2 more answers
Explain how 9 x 4 can help you find 9 x 8
MrMuchimi
You can double the product of 9 and 4 to get to the product of 9 and 8
3 0
3 years ago
Read 2 more answers
Can someone please help me on this question? This question has 2 answer choices. Thank you.
grin007 [14]
Hello!

To solve this you have to find the ratio between the two cylinders

Cylinder 1 height is 30
Cylinder 2 height is 20

this is a 30:20 ratio

This can be reduced to a 3:2 ratio

Now you look for one that are also equal to 3:2

3 * 7 = 21
2 * 7 = 14

The answers are 3:2 and 21:14

Hope this helps!
4 0
3 years ago
7/4x-5 + 2y - 3.5 + -1/4x + 5
romanna [79]
-7/4+2y+1/4x is the answer
5 0
3 years ago
How do you factor b^2-81
Naddik [55]
The middle number is 0 and the last is -81Factoring means we want something like(b+_)(b+_)We need two numbers that add together to get and Multiply to get -81which are 9 and -9:<span><span>9+-9 = 0 and </span><span>9*-9 = -81</span></span>
Fill in the blanks in
(b+_)(b+_)
with 9 and -9 to get...<span><span>(<span>b+9</span>)</span><span>(<span>b−9</span>)</span></span>
The answer is : (b+9)(b−9)
<span>
</span>
7 0
3 years ago
Other questions:
  • What is the scientific notation of 58,927
    5·2 answers
  • Which relationships describes angles 1 and 2?
    14·2 answers
  • What is the median of the data set 10,7,9,9,4, 6?
    6·1 answer
  • Of the 24,000 cellular phones inspected in the last production run , 50 were defective . What fraction of the cellular phones in
    10·1 answer
  • Sleep deprivation, CA vs. OR, Part I. According to a report on sleep deprivation by the Centers for Disease Control and Preventi
    12·1 answer
  • 6x+19+3x-6+5x-15=180​
    15·2 answers
  • Help asap
    9·2 answers
  • At what rates did she invest?<br> $1500 invested at___%<br> $800 invested at ____%
    10·1 answer
  • Ruby bought 2 chicken wings for $4. What was the cost of the wings in dollars per wing ?
    7·2 answers
  • Question 8 of 1010 Points
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!