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igomit [66]
3 years ago
5

The variable z is inversely proportional to x.�� when x is 6, z has the value 2.what is the value of z when x = 13

Mathematics
1 answer:
Elis [28]3 years ago
7 0
When x =13 z=5 because in terms of x we add half of plus one in z we add have of 2plus one so our zoo is 5
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if the side length of a square pyramid is tripled and the slant height is divided by 5, what would be the formula to find the mo
Yuliya22 [10]

i believe the formula you need is; SA= n(3/10 ib) + 9b

5 0
4 years ago
The ratio between the square of a number and it's cube is 1:3 what is the number ​
Dimas [21]

Answer:

3

Step-by-step explanation:

Call that number “x”

The square of that number is x^2

Also as the cube is x^3

The ratio between these 2 values is 1:3, this means x^2 / x^3 = 1 / 3

<==> 1 / x = 1 / 3 (eliminate “x^2” for numerator and denominator of the fraction x^2 / x^3 )

<==> x = 1 * 3 / 1 = 3

So, that number is 3 ! This math problem seems simple ;)

4 0
3 years ago
Solve the system of linear equations Y+2.3=0.45x -2y=4.2-7.8
Zina [86]
Solve the following system using substitution:
{y + 2.3 = 0.45 x
{-2 y = -3.6

In the second equation, look to solve for y:
{y + 2.3 = 0.45 x
{-2 y = -3.6

-3.6 = -18/5:
-2 y = -18/5

Divide both sides by -2:
{y + 2.3 = 0.45 x
{y = 9/5

Substitute y = 9/5 into the first equation:
{4.1 = 0.45 x
{y = 9/5

In the first equation, look to solve for x:
{4.1 = 0.45 x
{y = 9/5

4.1 = 41/10 and 0.45 x = (9 x)/20:
41/10 = (9 x)/20

41/10 = (9 x)/20 is equivalent to (9 x)/20 = 41/10:
{(9 x)/20 = 41/10
{y = 9/5
Multiply both sides by 20/9:
Answer:  {x = 82/9
                {y = 9/5
3 0
3 years ago
Read 2 more answers
You are taking a multiple-choice test that has eight questions. each of the questions has three answer choices, with one correct
sukhopar [10]
Alright, so there are three answers. Start with 3, and for each question you answer, you can select three more, so it's 3*3 for two questions and so on, resulting in 3^8= 6561

This is assuming you mean <span>how many ways can you answer the test, not the question</span>
5 0
3 years ago
One number is 20 greater than another. If the lesser number is subtracted from three times the greater number, the difference is
RoseWind [281]

Answer:

<u>The numbers are 12 and 32.</u>

Step-by-step explanation:

x = One number

x - 20 = Another number

3x - (x - 20) = 84 (If the lesser number is subtracted from three times the greater number, the difference is 84)

Let's solve for x, this way:

3x - (x - 20) = 84

3x - x + 20 = 84

2x = 84 - 20 (Subtracting 20 at both sides)

2x = 64

x = 64/2

<u>x = 32 ⇒ x - 20 = 12</u>

6 0
4 years ago
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