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
Given AB=10cm, CD=11cm, and AD=39cm, find the length of BC
liraira [26]

<u>Answer:</u>

BC = 18 cm

<u>Step-by-step explanation:</u>

As we can see from the diagram:

AB + BC + CD = AD

⇒ 10 cm + BC + 11 cm = 39 cm

⇒ BC + 21 cm = 39 cm

⇒ BC = 39 cm - 21 cm

⇒ BC = 18 cm

7 0
2 years ago
Find two consecutive positive integers such that the sum of their squares is 421
alexandr402 [8]
14 and 15
14^2 = 196
15^2 = 225
225+196 = 421
6 0
3 years ago
Which is bigger millimeters or centimeters?
VARVARA [1.3K]
Centimeter is bigger than millimeter
3 0
3 years ago
Use the Distributive Property to simplify the expression. 8(s−1) =
Verizon [17]

Answer:

the answer would be 8s -8

Step-by-step explanation:

I learned this a long time ago

7 0
2 years ago
Read 2 more answers
Alyssa spent 10 minutes making icing and 45 minutes decorating cookies if she started at 5:35 what time did she finish
ivolga24 [154]
She finished at 10:45 at night
8 0
3 years ago
Read 2 more answers
Other questions:
  • The difference in the x-coordinates of two points is 3, and the difference in the y-coordinates of the two points is 6. What is
    8·2 answers
  • HEY YA'LL 30 PTS FOR 1 PROBLEM!<br> Given: m∠EYL=1/3 the measure of arc EHL<br> Find: m∠EYL.
    13·1 answer
  • Simplify 30x-140-(x-4)
    14·1 answer
  • Can someone help with this problem please? Thanks.
    14·1 answer
  • Express the following as a function of a single angle.<br> sin340cos120 - cos340sin120
    14·1 answer
  • Jonas has a certain number of DVDs in his collection The table shows the total number of DVDs in his collection over several mon
    13·1 answer
  • Find the area of the figure.<br> 14 m<br> 5 m<br> 16 m
    9·1 answer
  • Help please i need some help
    9·1 answer
  • Find -5A+4B<br><br><br> please only answer if yk the answer
    8·1 answer
  • Jan has $30. Brenda has $66. How many DVDs can they buy with their total amount if one DVD costs $12?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!