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
Inessa05 [86]
3 years ago
5

Solve by completing the squarex squared +14x - 51=0

Mathematics
1 answer:
Nesterboy [21]3 years ago
3 0
x^2 +14x - 51=0\\ \\\Delta = b^{2}-4ac =14^{2}-4*1*(-51)=196+204=400 \\ \\x_{1}=\frac{-b-\sqrt{\Delta }}{2a} =\frac{-14- \sqrt{400}}{2}=\frac{-14-20}{2}= \frac{-34}{2}=-17\\ \\x_{2}=\frac{-b+\sqrt{\Delta }}{2a} =\frac{-14+ \sqrt{400}}{2}=\frac{-14+20}{2}= \frac{6}{2}=3


You might be interested in
8m –1 from 16+m plz give the the right Anwer
Neko [114]

Answer:

17 - 7m

Step-by-step explanation:

Assuming you require to subtract the expressions, then

16 + m - (8m - 1) ← distribute parenthesis by - 1

= 16 + m - 8m + 1 ← collect like terms

= 17 - 7m

6 0
2 years ago
Read 2 more answers
Exponents of the multiple 3
nlexa [21]

I believe you are referring to exponents that have a multiple of three. If so any number * three is a valid exponent in your case.

4 0
3 years ago
The average weight of a 7-year old girl is 49 pounds. The average weight of an 11 year old girl is 77 pounds.
Aneli [31]
I only know D. but I'll try to figure out the rest too. D. 9 years old

8 0
3 years ago
Nth term of this sequence 1, 10, 19, 28
mestny [16]

Answer:

The nth term of the sequence is

<h2>9n - 8</h2>

Step-by-step explanation:

The sequence above is an arithmetic sequence

For an nth term in an arithmetic sequence

A(n) = a + ( n - 1)d

where a is the first term

n is the number of terms

d is the common difference

From the question

a = 1

d = 10 - 1 = 9 or 19 - 10 = 9 or 28 - 19 = 9

So the nth term of the sequence is

A(n) = 1 + (n - 1)9

= 1 + 9n - 9

= 9n - 8

<h3>A(n) = 9n - 8</h3>

Hope this helps you

3 0
3 years ago
What fraction, decimal or percent. Is equivalent to 9/9
8_murik_8 [283]

Answer:

1/1

1.0

100%

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • How can you check the correctness of a division answer that has no remainder?
    10·1 answer
  • A girl 160 cm tall, stands 360 cm from a lamp post at night her shadow is 90 cm. How high is the lamp post
    12·1 answer
  • Explain how to solve the equation: x^4/x^2
    10·1 answer
  • A race is 10 kilometers long. Markers will be placed at the beginning and end of the race course and at each 500 meter mark. How
    8·1 answer
  • Find the geometric mean of 5 and 36.
    15·1 answer
  • Help it’s for my final most of my grade
    14·1 answer
  • Norman is a sunflower farmer. He uses a plot of
    5·1 answer
  • Write the slope-intercept form of the equation of each line
    13·2 answers
  • What is the probability of rolling a sum of 5 with two dice?
    6·1 answer
  • 5) Which equation shows how to find the volume of the figure shows Al 5x 3 x 4 = 60 B) 5+ 3 * 4 = 32 0525 USA 2021​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!