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Nitella [24]
3 years ago
11

A cube has a surface area of 486cm^2. what is its side length?

Mathematics
1 answer:
Gnesinka [82]3 years ago
5 0

Answer:

9 cm

Step-by-step explanation:

Total surface area of a cube =486 cm²

 We know that the surface area of the cube

=6l²

 Therefore,

6l ² =486

l² =81

l =9 cm

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If f(x) = 7 + 4x and g(x)= 7x, what is the value of (f/g)(5)
andrew-mc [135]

The value of (\frac{f}{g})(5) is \frac{27}{35}

Explanation:

Given that f(x)=7+4x and g(x)=7x

<u>The value of </u>(\frac{f}{g})(5)<u>:</u>

The value of (\frac{f}{g})(5) can be determined by substituting x = 5 in the functions f(x) and g(x) and then dividing the terms, we get, the value of (\frac{f}{g})(5)

Thus, we have,

(\frac{f}{g})(5)=\frac{f(5)}{g(5)}

Substituting the value of x = 5 in the functions f(x) and g(x), we get,

(\frac{f}{g})(5)=\frac{7+4(5)}{7(5)}

Simplifying the terms, we have,

(\frac{f}{g})(5)=\frac{7+20}{35}

Adding the terms in numerator, we have,

(\frac{f}{g})(5)=\frac{27}{35}

Thus, the value of (\frac{f}{g})(5) is \frac{27}{35}

8 0
3 years ago
ALGEBRA determine the angle measure in the polygon.a. 30°, 150°, 30°, 150°b. 30°,30°,30°,30°c. 45°,225°,45°,255°D. 15°,75°,15°,7
Veseljchak [2.6K]

We know that consecutive angles in a parallelogram are supplementary, as they are consecutive interior angles between parallel lines.

Then, if we add the measure of x° and the measure of 5x° we get 180°. Then, we can write this expression and solve for x:

\begin{gathered} x+5x=180 \\ 6x=180 \\ x=\frac{180}{6} \\ x=30 \end{gathered}

Then, the angle x has a measure of 30° and the angle 5x has a measure of 5*30=150°.

Answer: a. 30°, 150°, 30°, 150°

7 0
2 years ago
There is a bag of marbles that contain 5 blue, 6 red, 3 black, and 2 yellow marbles. What is the probability that you select a b
labwork [276]

Answer:

3/16

Step-by-step explanation:

5 blue, 6 red, 3 black, and 2 yellow

total number of marbles = 5 + 6 + 3 + 2 = 16

p(black) = (number of black marbles)/(total number of marbles)

p(black) = 3/16

Answer: 3/16

8 0
3 years ago
Read 2 more answers
What is the y-value in the solution to this system of linear equations?
Leona [35]
It would be -4

4(2) + 5(-4) = -12

-2(2) + 3(-4) = -16
4 0
4 years ago
Which answer is correct
inn [45]

Answer: Choice B) Integers include whole numbers and natural numbers.

======================================================

Explanation:

Let's go through the four answer choices to see which are true or false.

  • A) False. A rational number like 2/3 is not a natural number (1,2,3,4,...). This is one counterexample out of infinitely many.
  • B) True. The set of integers is {..., -3, -2, -1, 0, 1, 2, 3, ...} basically positive and negative values that don't have fractional or decimal components. Zero is included.
  • C) False. Similar reasoning as choice A above.
  • D) False. A natural number like 7 can be written as 7/1, which means it is a rational number. Any rational number is of the form a/b with a,b being integers and b is nonzero.

8 0
4 years ago
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