3 years ago

15/2 ________ the square root of 55 ( , =)

Mathematics

1 answer:

Tatiana [17]3 years ago

8 0

Answer:

7.416198

Step-by-step explanation:

You must find out which number produces 55 when multiplied by itself

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Suppose you wish to perform a hypothesis test for a population mean. suppose that the population standard diviation is unknown,

Elenna [48]

You would Perform a z test

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3 years ago

Consider a function f(x) such that f(5x) =x-5/5x-1. Find f(x) and hence write down the domain of f(x).

nasty-shy [4]

Answer:

$f(x) = \frac{x - 25}{5x - 5}$

Domain: $x \ne 1$

Step-by-step explanation:

Given

$f(5x) = \frac{x - 5}{5x - 1}$

Required

Determine f(x) and its domain

To determine f(x), we replace 5x with x in f(5x)

So, we have:

$f(5x) = \frac{\frac{5x}{5} - 5}{5x - 1}$

$f(x) = \frac{\frac{x}{5} - 5}{x - 1}$

Take LCM

$f(x) = \frac{\frac{x - 25}{5}}{x - 1}$

$f(x) = \frac{x - 25}{5} * \frac{1}{x-1}$

$f(x) = \frac{x - 25}{5x - 5}$

To get the domain, we set the denominator as

$5x - 5 \ne 0$

$5x \ne 5$

$x \ne 1$

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3 years ago

The scatter plot shows the number of text messages sent (x) and text messages received (y) by 10 students in a half hour.

juin [17]

Answer: It’s B

Step-by-step explanation:

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3 years ago

Read 2 more answers

I am happy to answer any of your brainly questions (any subject up to Year 11). Please link them below :)

Vladimir [108]

Answer:

Can you help me with physics and maths?

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2 years ago

The volume of this triangular prism is 140 cubic millimeters. What is the value of d? Please need help!!

Lelechka [254]

Answer:

7 millimeters

Step-by-step explanation:

Volume is the area of the base times it's length.

140/10 is 14

so the area of the triangle is 14

the formula for area of a triangle is base times height divided by 2

d x 4/ 2 = 14

multiply both sides by 2

d x 4 = 28

divide both sides by 4

d=7

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3 years ago