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3 years ago

11

Simplify (-36x)(-1/3)(2/9)(-4y)

1 answer:

den301095 [7]3 years ago

3 0

Answer:

$\frac{32xy}{3}$

Step-by-step explanation:

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Z varies directly with X squared and inversely with Y. When X equals two and Y equals four, Z equals three. What is the value of

gayaneshka [121]

Answer:

B

Step-by-step explanation:

Set up the equation

z = $\frac{kx^2}{y}$

Plug in the numbers to find the value of k

3 = $\frac{k(2^2)}{4}$

12 = 4k

3 = k

Solve to find the value of z

z = $\frac{3(4^2)}{9}$

z = $\frac{3(16)}{9}$

z = 48/9

z = 16/3

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2 years ago

Please help with this problems :) and explain because i don't really get it and having trouble in this lesson

Liula [17]

1. 9^4
2. 6^9
3. n^10
4. (a^3)^8

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3 years ago

A random sample of 23 items is drawn from a population whose standard deviation is unknown. The sample mean isx⎯ ⎯ x¯ = 840 and

gayaneshka [121]

Answer:

$(832.156, \ 847.844)$

Step-by-step explanation:

Given data :

Sample standard deviation, s = 15

Sample mean, $\overline x = 840$

n = 23

a). 98% confidence interval

$\overline x \pm t_{(n-1, \alpha /2)}. \frac{s}{\sqrt{n}}$

$$E= t_{( n-1, \alpha/2 )} \frac{s}{\sqrt n}}$

$t_{(n-1 , \alpha/2)} \frac{s}{\sqrt n}$

$t_{(n-1, a\pha/2)}=t_{(22,0.01)} = 2.508$

∴ $E = 2.508 \times \frac{15}{\sqrt{23}}$

$E = 7.844$

So, 98% CI is

$(\overline x - E, \overline x + E)$

$(840-7.844 , \ 840+7.844)$

$(832.156, \ 847.844)$

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2 years ago

Please help supper important

ra1l [238]

Answer:

A = 2

B = 4

C = 1

D = 3

Step-by-step explanation:

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3 years ago

A rectangular equation that is not a function will not be a function in any coordinate system. True or false ?

OLga [1]

Answer:

the answer is false

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3 years ago