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2 years ago

I’ll mark you brainlist show work

Mathematics

1 answer:

masya89 [10]2 years ago

3 0

Answer:

whats a slope?

Step-by-step explanation:

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What is the average (arithmetic mean) of the first 90 measurements in a certain list of 92 measurements? (1) the average of the

marishachu [46]

The sum of all the measurements is just the average times the number.

$\bar x = \frac{1}{n} \sum_{i=1}^n x_i$

$\sum_{i=1}^n x_i = n \bar x$

So if the average of all 92 is 7 the sum of those is $92 \times 7$

The average of the last two is 7.2 so their sum is $2 \times 7.2$

That means the sum of the first 90 is $92 \times 7 - 2 \times 7.2$

so the average of the first 90 is

$\dfrac{92 \times 7 - 2 \times 7.2}{90} = 6.99556$ cm

7 0

2 years ago

Can anyone help me please, I will mark brainliest to the right answer

Blababa [14]

Answer:

y-4=0

Step-by-step explanation:

its the only that doesn't have a x?

3 0

2 years ago

Please help will give brainliest

Vladimir [108]

$\huge\underline{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} -}$

$\frac{4}{5} + \frac{3}{15} - \frac{2}{3} \\$

<u>Taking </u><u>LCM</u>

$\frac{12 + 3 - 10}{15} \\ \\ \longrightarrow \: \cancel\frac{5}{15} \\ \\ \longrightarrow \: \frac{1}{3}$

hope helpful ~

8 0

1 year ago

What fraction of 5 is 1/2

Sphinxa [80]

Answer:

1/10

Step-by-step explanation:

1/2 divided by 5 = 1/10

7 0

2 years ago

Read 2 more answers

Alex is making puppets for a show. He bought all the string needed for $125. It costs $18 for the remaining materials to make ea

Alexus [3.1K]

Alex bought all the string needed for $125.

It costs $18 for the remaining materials to make each puppet.

So if we closely observe then we see that here $125 is the fixed cost because its not going to change with number of puppets.

And the variable cost is $18.

In this case we can model a Total cost function C(x) for for x number of puppets as below

$C(x)=125+18x\\ \\ \text{Here x is the number of puppets}\\ \\ \text{Since in our case the number of puppets is 50 so replace x by 50 we get }\\ \\ C(50)=125+18*50\\ \\ C(50)=125+900\\ \\ C(50)=1025 \ dollar.$

The total cost to make 50 puppets=$1025

3 0

2 years ago

Read 2 more answers