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
ella [17]
3 years ago
13

If x2 = 30, what is the value of x?

Mathematics
2 answers:
nataly862011 [7]3 years ago
6 0

Subtract 30, then factor the equation.

... x² = 30

... x² - 30 = 0

... (x -√30)(x +√30) = 0

By the zero product rule, the solutions are values of x that make a factor be zero.

... x - √30 = 0 . . . . the first factor is zero

... x = √30

... x + √30 = 0 . . . . the second factor is zero

... x = -√30

The solutions are . . .

... x = ±√30 . . . . . matches your 3rd choice

klasskru [66]3 years ago
4 0

Answer: C

Step-by-step explanation: hope it helps :)

You might be interested in
Zak uses repeated subtration to find 48\8 .How many groups of 8 doeszak subtract
Lyrx [107]
The answer would be 6 the easy way is to divide 48 by 8
4 0
3 years ago
New flowers are being planted in a circular bed with a 14 foot diameter. If each flower requires 1 square foot of space, how man
alexgriva [62]
You can fit 153 flowers in a circle with the diameter of 14. You find the area of the circle by doing pi times 7 squared.
7 0
3 years ago
Which equation is not a linear equation?
Julli [10]

Answer:

the answer is c  x^4

Step-by-step explanation:  

HI.....

liner equation mean that the  power of   the variables in equation  is 1

x^4 =  the power of variable x is 4  so  non linear  

Good luck

4 0
3 years ago
Find a formula for the polynomial
andrew11 [14]

Answer:But

Step-by-step explanation:

8 0
3 years ago
Express the terms of the following sequence by giving a recursive formula.
emmasim [6.3K]

The recursive formula for given sequence is: a_n = a_{n-1}-7

And the terms will be expressed as:

a_1 = 11\\a_2 = a_{2-1} - 7 \\a_2= a_1 - 7\\a_2 = 11- 7\\a_2 = 4\\a_3 = a_{3-1} - 7 \\a_3= a_2 - 7\\a_3 = 4 - 7\\a_3 = -3\\a_4 = a_{4-1} - 7 \\a_4= a_3 - 7\\ a_4= -3 - 7\\a_4 = -10\\a_5 = a_{5-1} - 7 \\a_5= a_4 - 7\\a_5 = -10 - 7\\a_5 = -17\\

Step-by-step explanation:

First of all, we have to determine if the given sequence  is arithmetic sequence or geometric. For that purpose, we calculate the common difference and common ratio

Given sequence is:

11,4,-3,-10,-17...

Here

a_1 = 11\\a_2 = 4\\a_3 = -3\\So,\\d = a_2 - a_1 = 4-11 = -7\\d = a_3-a_2 = -3-4 = -7

As the common difference is same, given sequence is an arithmetic sequence.

A recursive formula is a formula that is used to generate the next term of the sequence using the previous term and common difference

So, the recursive formula for an arithmetic sequence is given by:

a_n = a_{n-1} +d\\Putting\ d = -7\\a_n = a_{n-1}-7

Hence,

The recursive formula for given sequence is: a_n = a_{n-1}-7

And the terms will be expressed as:

a_1 = 11\\a_2 = a_{2-1} - 7 \\a_2= a_1 - 7\\a_2 = 11- 7\\a_2 = 4\\a_3 = a_{3-1} - 7 \\a_3= a_2 - 7\\a_3 = 4 - 7\\a_3 = -3\\a_4 = a_{4-1} - 7 \\a_4= a_3 - 7\\ a_4= -3 - 7\\a_4 = -10\\a_5 = a_{5-1} - 7 \\a_5= a_4 - 7\\a_5 = -10 - 7\\a_5 = -17\\

Keywords: arithmetic sequence, common difference

Learn more about arithmetic sequence at:

  • brainly.com/question/10341324
  • brainly.com/question/10081622

#LearnwithBrainly

6 0
3 years ago
Other questions:
  • Sarah the yearbook editor and Mrs Moore the yearbook sponser are reviewing costs to produce the yearbook. New yearbook design so
    14·1 answer
  • What is the slope of y=5r-1
    8·1 answer
  • Can someone please help me and explain how to solve this question
    7·1 answer
  • Choose the system of inequalities whose solution is represented by the graph.
    13·1 answer
  • If the original price of a pair of shoes is $80 but a sign above the shoes reads “Sale - 20% discount”, then what price would a
    10·2 answers
  • -6(y+5)-24=66 find the value of y
    10·1 answer
  • Solve for x and y y=2x+1 y=x-1
    12·1 answer
  • Which of the following represents how the problem 3/4 ÷ 7/8 would be changed before it could be solved
    8·2 answers
  • AABC has vertices at A(5,1), B(-3,1), and C(-2,5).
    11·1 answer
  • Helpppppppppppppppppp
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!