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
Veronika [31]
3 years ago
10

Find the solutions to x2 = 28.

Mathematics
1 answer:
mr Goodwill [35]3 years ago
7 0

Answer: x = \pm2\sqrt{7}\\\\

Work Shown:

x^2 = 28\\\\x = \pm\sqrt{28}\\\\x = \pm\sqrt{4*7}\\\\x = \pm\sqrt{4}*\sqrt{7}\\\\x = \pm2\sqrt{7}\\\\

This can be rewritten into x = 2\sqrt{7} \ \text{ or } \ x = -2\sqrt{7}

You might be interested in
Laura buys an unfair coin online. The coin is supposed to land heads up 75% of the time. If this is true, what is the
Archy [21]

Answer:

C . (0.75) 15  x  (0.25) 5

Step-by-step explanation:

Took the assignment in edge, it’s right

Its based off of the rule P(A and B) = P(A) x P(B) from multiplication rule for independent events.

4 0
3 years ago
Emilio wants to find 2/3 of 50. explain how emilio could estimate the answer
Serga [27]

Answer:

Emilio could estimate the answer by thinkinng of 50 as 100. Then 2/3 of 100 is 66.66666666. Divide this by 2 to get 33.33333333

Step-by-step explanation:

Hopefully this helps! I kind of just thought of what ran through my head so I would say it's an estimate.

5 0
3 years ago
Can someone help me with this please
alexandr402 [8]
A, c, e, g are quadratic functions
6 0
3 years ago
PLEASE HELP ME WITH THESE!! i will give brainliest to best answer!!!
dimaraw [331]

Answer:

1) {11}^{12}

2) {13}^{10}

3) {14}^{19}

4) {2}^{8}

5)  {7}^{14}

6) {3}^{12}

7) {17}^{16}

8) {5}^{9}

9) {16}^{6}

10) {18}^{9}

11) {9}^{14}

12) {8}^{10}

13) {12}^{13}

14) {17}^{17}

15) {5}^{6}

16) {3}^{4}

17) {19}^{12}

18) {20}^{9}

19) {4}^{7}

20) {6}^{9}

21) {10}^{15}

8 0
3 years ago
In ΔOPQ, the measure of ∠Q=90°, the measure of ∠P=54°, and OP = 68 feet. Find the length of PQ to the nearest foot.
andrey2020 [161]

Answer:

PQ=40\ ft

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

In the right triangle OPQ

cos(P)=\frac{PQ}{OP} ----> by CAH (adjacent side divided by the hypotenuse)

substitute the given values

cos(54^o)=\frac{PQ}{68}

solve for PQ

PQ=(68)cos(54^o)=40\ ft

8 0
3 years ago
Other questions:
  • Four polynomials are shown below: A. 3 − 7x5 + x2 B. 5x3 + 5 − 3x C. 3x + 2x3 − x2 + 6 + 2x D. 3x3 − 5 + 2x5 + x + 2x2 Which of
    12·2 answers
  • What is the factor of this number 66
    14·2 answers
  • Whats 82.72+54.66 by adding
    9·2 answers
  • The makers of a popular brand of laundry detergent have discovered a new secret ingredient that they believe will boost the clea
    11·1 answer
  • I need help with this question
    11·1 answer
  • Write the coefficient of x in
    15·2 answers
  • Given this expression:
    13·1 answer
  • Solve for x <br> -4x+6(6-2x)=-7-36<br> A) 8<br> B) 15<br> C) -7<br> D) 3
    7·1 answer
  • A rectangular prism has a volume of 50 cubic meters . what could its dimensions be
    13·1 answer
  • Joy is training for a triathlon. she runs a distance of 2x miles, cycles a distance of (x2 7) miles, and swims a distance of (x
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!