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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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g In R simulate a sample of size 20 from a normal distribution with mean µ = 50 and standard deviation σ = 6. Hint: Use rnorm(20
Illusion [34]

Answer:

> a<-rnorm(20,50,6)

> a

[1] 51.72213 53.09989 59.89221 32.44023 47.59386 33.59892 47.26718 55.61510 47.95505 48.19296 54.46905

[12] 45.78072 57.30045 57.91624 50.83297 52.61790 62.07713 53.75661 49.34651 53.01501

Then we can find the mean and the standard deviation with the following formulas:

> mean(a)

[1] 50.72451

> sqrt(var(a))

[1] 7.470221

Step-by-step explanation:

For this case first we need to create the sample of size 20 for the following distribution:

X\sim N(\mu = 50, \sigma =6)

And we can use the following code: rnorm(20,50,6) and we got this output:

> a<-rnorm(20,50,6)

> a

[1] 51.72213 53.09989 59.89221 32.44023 47.59386 33.59892 47.26718 55.61510 47.95505 48.19296 54.46905

[12] 45.78072 57.30045 57.91624 50.83297 52.61790 62.07713 53.75661 49.34651 53.01501

Then we can find the mean and the standard deviation with the following formulas:

> mean(a)

[1] 50.72451

> sqrt(var(a))

[1] 7.470221

5 0
3 years ago
Is (0,0) a solution to this system?
Anuta_ua [19.1K]

Answer:

option-B

Step-by-step explanation:

we are given system of inequality as

y\leq x^2-4

y>2x-1

now, we can check solution

At (0,0):

we can plug x=0 and y=0

and check inequality

0\leq 0^2-4

0\leq -4

so, this is FALSE

now, we can check second inequality

0>2\times 0-1

0>-1

So, this is TRUE

so, option-B

5 0
3 years ago
Read 2 more answers
Plzzzzzzzzz help me on this
pickupchik [31]

Answer:

B . . . . . .. . ....... .......

6 0
3 years ago
Read 2 more answers
The measures of the sides of a triangle are 2x + 3, 8x – 4, and . Write an expression that describes the perimeter of the triang
tresset_1 [31]

Answer:

C


Step-by-step explanation:


Perimeter of a triangle is the sum of all the sides.


A triangle has 3 sides, so if we add up all the 3 sides lengths <em>(given as expressions here)</em> of the triangle, we will have the perimeter.

Perimeter = (2x+3)+(8x-4)+(x^2)\\=2x+3+8x-4+x^2

<em>Now combining like terms we have:</em>

<em>2x+3+8x-4+x^2\\=x^2+10x-1</em>


Answer choice C is the correct one.

4 0
3 years ago
1.
Mumz [18]

Answer:

B. P′ (−4, 0)

Step-by-step explanation:

You can look at the graph. The X-axis always goes first. SO -4 is first because it's on the x-axis. ANSWER= (-4, 0)

7 0
3 years ago
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