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
11Alexandr11 [23.1K]
3 years ago
14

Is there an error in this statement If x2 = 25, then x = 5.

Mathematics
2 answers:
katen-ka-za [31]3 years ago
7 0
Yes there is an error in this statement.

because x^2 = 25 
so x = 5...this is one condition

Another condition is x = -5
(-5)^2 = 25 (this is also true)
Troyanec [42]3 years ago
3 0
No because 5 to the power of 2 equals 5 x 5 and 5 x 5 = 25 hope this helped
You might be interested in
What is the value of y in the formula shown when x = 4/5?
Pavlova-9 [17]
4(4/5) + √(4/5) + 0.2 - 5(4/5)

= 16/5 + (2√5/5) + (1/5) - 4

= (16 + 2√5 + 1 - 20)/5

= (2√5 - 3)/5 or 0.29442719
6 0
3 years ago
Last weekend, Carlos rode his bicycle for 3 hours and traveled 27 miles. On average, at what rate did Carlos travel on his bicyc
mash [69]
Carlos rode an average of 9 miles every hour on his bicycle. It is because 3*9=27 and the distance is rate multiplied by time. use the formula and check it!

Hope I helped.

Good Luck!
5 0
3 years ago
Punctele O, A, B, C sunt coliniare în această ordine, iar segmentele OA, AB și BC au lungimile exprimate în cm, prin numere natu
julia-pushkina [17]

Răspuns:

a) OC = 18cm

b) MN = 6cm

Explicație pas cu pas:

Găsiți diagrama la întrebarea atașată.

a) Din diagramă se poate observa că OC = OA + AB + AC

OC = 2n + 2n + 2 + 2n + 4

OC = 6n + 6

Următorul este să obțineți valoarea lui n:

OM = OA + AM

Să obținem segmentul AM;

Deoarece M este segmentul mijlociu al AC, atunci;

AM = AC / 2

AM = AB + BC / 2

AM = 2n + 2 + 2n + 4/2

AM = 4n + 6/2

AM = 2n + 3

Din moment ce OM = OA + AM

OM = 2n + 2n + 3

OM = 4n + 3

Dat fiind OM = 11

11 = 4n + 3

4n = 11-3

4n = 8

n = 2

Următorul pas este să calculați OC;

OC = 6n + 6

OC = 6 (2) + 6

OC = 18

Prin urmare, lungimea segmentului OC este de 18 cm

b) Această întrebare ne cere să găsim segmentul de linie MN.

Din diagramă, MN = AM - AN

Deoarece AM = 2n + 3 din întrebarea 1;

AM = 2 (2) +3

AM = 4 + 3

AM = 7

Acum, să obținem AN:

Din diagramă, AN = ON-OA și ON = OB / 2

AN = OB / 2 - OA

AN = (2n + 2n + 2) / 2 - 2n

AN = 4n + 2/2 - 2n

AN = 2n + 1 - 2n

AN = 2n-2n + 1

AN = 1

De la MN = AM - AN

MN = 7 - 1

MN = 6cm

Prin urmare, distanța dintre N, mijlocul segmentului OB și punctul M este de 6cm

6 0
4 years ago
In the last draw, the grand prize was won. If there are three winners, each would have received $ 720,000; if there are four win
larisa86 [58]

Answer:

b) 15 winners

Step-by-step explanation

if 3 winners get $720,000 each that means there is $2,160,000 total. So if each winner gets $144,000 each that means there are 15 winners.

(2,160,000/ 144,000)

5 0
3 years ago
A number added to 12 and then subtracted by 18 equals 26. What is the number
tiny-mole [99]
The answer would be 32. take your 26 and add 18 then subtract 12. then rework it forward if you don't understand.
4 0
3 years ago
Read 2 more answers
Other questions:
  • Is 1/3 bigger then 1/2
    7·2 answers
  • Sophia pays a
    9·1 answer
  • What are the vertical and horizontal asymptotes for the function f(x)= 3x^2 over x^2 - 4
    5·1 answer
  • Solve for x.<br> 3x/2 = 15<br> x = 10 1/2<br> x = 1/10<br> x=22 1/3<br> x = 10
    12·1 answer
  • What s 5346 x 7256 =
    12·1 answer
  • The value of -4 5/8 - x is positive. What are two possible values of x?
    6·1 answer
  • One side of a rectangle is 3 inches shorter than the other side, and the perimeter is 54 inches. What are the dimensions of the
    7·1 answer
  • VERY DIFFICULT!! HELP NEEDED
    10·1 answer
  • Help me please help help meee help I’m
    14·1 answer
  • In a fruit cocktail, for every 30 ml of orange juice you need 45 ml of apple juice and 25 ml of coconut milk. What proportion of
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!