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3 years ago

Plez help

1 answer:

4 0

110 is the price that is charged for every time the commercial is aired. 900 is a base price that they charge to air the commercial.

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Here are two sets of numbers, a and b. Set a :200,104,100,160. Set b: 270,400,483,300, x. Mean of set a: mean of set b= 3:8. Wor

LenKa [72]

Given:

The given sets are:

Set a : 200, 104, 100, 160.

Set b: 270, 400, 483, 300, x.

Mean of set a: mean of set b= 3:8

To find:

The value of x.

Solution:

Formula for mean:

$Mean=\dfrac{\text{Sum of observations}}{\text{Number of observation}}$

The mean of set of a is:

$Mean=\dfrac{200+104+100+160}{4}$

$Mean=\dfrac{564}{4}$

$Mean=141$

The mean of set of b is:

$Mean=\dfrac{270+400+483+300+x}{5}$

$Mean=\dfrac{1453+x}{5}$

It is given that,

Mean of set a: mean of set b= 3:8

$\dfrac{141}{\dfrac{1453+x}{5}}=\dfrac{3}{8}$

$\dfrac{705}{1453+x}=\dfrac{3}{8}$

$8\times 705=3\times (1453+x)$

$5640=4359
+3x$

Isolate the variable x.

$5640-4359
=3x$

$1281
=3x$

Divide both sides by 3.

$\dfrac{1281}{3}
=x$

$427
=x$

Therefore, the value of x is 427.

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3 years ago

Carole purchased 7/8 of a pound of chocolate chips to make cookies. On the way home from school she got hungry and ate 1/4 of th

AURORKA [14]

Answer is below..................

4 0

3 years ago

The differences between a number and 12 is 20

Alika [10]

X-12=20
x=20+12
x=32

answer is 32

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3 years ago

The first step in calculating the mean is to ____the numbers<br> add<br> group

Blababa [14]

The first step in calculating the mean is to add the numbers. After that you divide by the number of items in the data set. You don’t need to group the numbers to find the mean. Hope this helped!

4 0

3 years ago

Read 2 more answers

can someone help me with this, i don’t understand, do we have to like name each shape ?? if so please help me!! please please pl

ikadub [295]

Answer: IT's asking for you to put the letter of the shapes next to they're name

Step-by-step explanation:

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3 years ago