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3 years ago

I need Help please

Mathematics

1 answer:

Nana76 [90]3 years ago

8 0

Answer:

its C

Step-by-step explanation:

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The product of 3 and a number X is 2/3 what is the value of X

ANEK [815]

Answer:

x = 2/9

Step-by-step explanation:

3x = 2/3

3*3x = 2

9x = 2

x = 2/9

Check:

3*2/9 = 2/3

6/9 = 2/3

5 0

3 years ago

Match the one-to-one functions with their inverse functions.

Nady [450]

The inverse of a function is obtained by making x the subject of the formular of the function.

Given the function
$f(x)= \frac{x}{8} -7$
the inverse of the function is obtained as follows:
$y= \frac{x}{8} -7 \\ \\ y+7=\frac{x}{8} \\ \\ x=8(y+7) \\ \\ \bold{f^{-1}(x)=8(x+7)}$

Given the function
[tex[f(x)=x+7[/tex]
the inverse of the function is obtained as follows:
$y=x+7 \\ \\ x=y-7 \\ \\ \bold{f^{-1}(x)=x-7}$

Given the function
$f(x)=1- \frac{x}{3}$
the inverse of the function is obtained as follows:
$y=1- \frac{x}{3} \\ \\ -\frac{x}{3} =y-1 \\ \\ x=-3(y-1) \\ \\ \bold{f^{-1}(x)=-3(x-1)}$

Given the function
$f(x)=20-0.25x$
the inverse of the function is obtained as follows:
$y=20-0.25x=20- \frac{1}{4} x \\ \\ \frac{1}{4} x=20-y \\ \\ x=4(20-y) \\ \\ \bold{f^{-1}(x)=4(20-x)}$

5 0

3 years ago

How can you use equations to solve problems involving area and volume?

Rina8888 [55]

I believe I'm not sure on this but it may lead you to the correct answer. Length x Width x height. Or l x w x h = v

3 0

3 years ago

Ik that no one would like to help me with this but my friend is not feeling well today. hes out with a cold today so can yall ma

Zepler [3.9K]

Answer:

I subed :)

Step-by-step explanation:

6 0

3 years ago

The time spent waiting at a traffic light can be considered a random variable with values from 0 seconds, it’s green when you ap

ehidna [41]

Answer:

H = 1/30

H = 0.0333

0.033

Step-by-step explanation:

The time spent waiting at a traffic light can be considered a random variable with values from 0 seconds,

it’s green when you approach and can go on through, to 30 seconds with the following distribution shape

The entire area under the distribution curve must be 1.

Let assume the Shape is rectangle

Given

Time taken from 0s to 30s = 30s - 0s = 30s

To find height of the distribution?

Let H = the height of the distribution

Based on the above assumption;.

H * 30 = 1 --- make H the subject of formula

H = 1/30

H = 0.0333

To three decimal places is 0.033

<h3>Hence, the calculated height of the distribution is 0.033</h3>

4 0

3 years ago

I need Help please​

I need Help please