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
Montano1993 [528]
3 years ago
6

The formula sa

Mathematics
1 answer:
sergeinik [125]3 years ago
8 0

Answer:

The correct option is (b).

Step-by-step explanation:

The formula for the side of a cube of surface area SA is as follows :

s=\sqrt{\dfrac{SA}{6}}

When SA = 180 m²

s=\sqrt{\dfrac{180}{6}}\\\\s=\sqrt{30}

When SA = 120 m²

s=\sqrt{\dfrac{120}{6}}\\\\s=\sqrt{20}\\\\=2\sqrt5

Difference,

=30-2\sqrt5

So, the correct option is (b).

You might be interested in
Name the four fundamental operations of arithmatic
Daniel [21]
<span>The basic arithmetic operations are addition, subtraction, multiplication and division, the subject also includes more advanced operations, such as manipulations of percentages, square roots, exponentiation, and logarithmic functions.</span>
3 0
4 years ago
A clothing store purchases a sweatshirt for $26 and adds $15 to set the sticker price.The store is having a sale where everythin
Rashid [163]

Answer:

32.80

Step-by-step explanation:

well it is kind of simple all you need to do is go 26 + 15=41 with the discont of 20% the answer is 32.80 dollars!!!!

5 0
4 years ago
Given AE = EC , for what value of x is quadrilateral ABCD a parallelogram?
natali 33 [55]

Answer:

upper and lower results have to be the same

so set them equal

5x = 2x + 1

subtract 2x on each side

3x = 1

devide each side by 3

x = 1/3

You are welcome

6 0
3 years ago
Groups of adults are randomly selected and arranged in groups of three. The random variable x is the number in the group who say
Vera_Pavlovna [14]

Answer:

0.789

Step-by-step explanation:

First, find the expected value (the mean).

μ = ∑ x P(x)

μ = (0) (0.359) + (1) (0.436) + (2) (0.180) + (3) (0.025)

μ = 0.871

Next, find the variance.

σ² = ∑(x − μ)² P(x)

σ² = (0 − 0.871)² (0.359) + (1 − 0.871)² (0.436) + (2 − 0.871)² (0.180) + (3 − 0.871)² (0.025)

σ² = 0.622

Finally, find the standard deviation:

σ = √0.622

σ = 0.789

8 0
3 years ago
1.Name 4 other angles whose cosine is the same as cos pi/3 . Explain using mathematical language how you know this is true.
krok68 [10]

The trigonometry illustrates that the four angles whose cosine is the same as cos pi/3 will be 7∏/3, 13∏/3, 19∏/3, and 31∏/3

<h3>How to illustrate the information?</h3>

From the information, given cos (x), the value that is similar to cos x will be the sum of the angle and multiple of 360.

Therefore, for the angle cos(∏/3), the angles that are similar to this angle will be expressed as Cos(2∏n + ∏/3) where n is any positive integer.

Then the other four angles will be 7∏/3, 13∏/3, 19∏/3, and 31∏/3. Also, the statement that all angles that have the same cosine will have the same sine is false. The sine of an angle is simply equal to the cosine of the complementary angle.

Learn more on trigonometry on: brainly.com/question/7331447

#SPJ1

3 0
2 years ago
Other questions:
  • Simplify.<br><br> 10^−4<br><br> 10,000<br><br> 0.0001<br><br> 1,000<br><br> 0.00001
    5·2 answers
  • Can someone please answer this question please answer it correctly please show work please help me I need it
    7·1 answer
  • A certain restaurant sells coffee for 2.00 and donuts for 1.50. If the restaurant sold 80 items and earned 141.50 how many donut
    6·1 answer
  • what is the approximate percent increase when the population of a town increases from 12089 to 15025? round the amounts to the n
    8·2 answers
  • Solve the following equations 3x-5=40
    11·2 answers
  • I need help what is the answer
    11·1 answer
  • Which coordinate point below is the solution to the system of equations?
    6·1 answer
  • 3.A double coconut can grow for 10 years and have a mass of 20.0 kg. If a 20.0 kg double coconut oscillates on a spring 42.7 tim
    7·1 answer
  • Which of the following lists of ordered pairs is a function?
    7·2 answers
  • If the r-value, or correlation coefficient, of a data set is negative , the coefficient of determination is negative
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!