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4 years ago

Calculate the mean: 8, 11, 19, 17, 15

Mathematics

2 answers:

tamaranim1 [39]4 years ago

4 0

Answer:

Step-by-step explanation:

The mean is the average of the given numbers. You add up all the numbers given and then divide by how much given numbers there were.

8 + 11 + 19 + 17 + 15 = 70

70 ÷ 5 = 14

Brut [27]4 years ago

3 0

Mean is the average.

Add the numbers together and divide by the quantity of numbers.

8 + 11 + 19 + 17 + 15 = 70

There are 5 numbers.

Mean = 70 / 5 = 14

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Divided the following rational expressions<br> t^3-t^2-2t/t-5 divided by t^2-t-2

butalik [34]

t³-t²-2t/t -5 )/(t²-t-2)

(t^4-t^3-7t)/t^3-t^2-2t)

(t³-t²-7)/(t²-t-2)

I hope that's help !

7 0

3 years ago

Evaluate:

Anni [7]

Answer:

a) = 4.5

b) = 3.3

Step-by-step explanation:

Before solving our problems given to us let us under stand the rule of cube roots

It says $\sqrt[3]{x \times x \times x} = x$ -----(A)

Also

$\sqrt[3]{x \times x \times x \times y \times y \times y} = x \times y$ ---(B)

Now let us see each part one by one

a) we have

$\sqrt[3]{64} + \sqrt[3]{0.027} + \sqrt[3]{0.008}$

Now 64 = 4 x 4 x 4

0.027 = 0.3 x 0.3 x 0.3

0.008 = 0.2 x 0.2 x 0.2

substituting these values

$\sqrt[3]{4 \times 4 \times 4} + \sqrt[3]{0.3 \times 0.3 \times 0.3} + \sqrt[3]{0.2 \times 0.2 \times 0.2}$

Applying Rule A in above

$=4+0.3+0.2$

$=4+0.5$

4.5

b) we have $\sqrt[3]{0.3 \times 0.3 \times 0.3 \times 11 \times 11 \times 11}$

Applying the B rule in this

$=0.3 \times 11$

3.3

4 0

3 years ago

The function f is defined by f(x)=2x^2-4.<br> Find f(-x)

Vedmedyk [2.9K]

First of all, since all powers of x in this function are even, the entire function is even. Thus, using -x as input doesn't change the function. Thus, f(-x)=2x^2-4.

6 0

3 years ago

bill can paint a room in 6 hours, but bills father could do it in four. if the two work together, how long would it take them to

aleksley [76]

Answer:

3 hrs thats my anwser

Step-by-step explanation:

brainliest if right

3 0

3 years ago

You are seeking to be emancipated from your parents. You are

FromTheMoon [43]

It will take 20 months for the cost to be same.

Step-by-step explanation:

Apartment A;

Security deposit = $1000

Each month cost = $1200

Let,

x be the number of months.

A(x) = 1000 + 1200x

Apartment B;

Security deposit = $1500

Each month cost = $1175

B(x) = 1500 + 1175x

The cost will be same when the functions are equal, therefore,

A(x) = B(x)

$1000+1200x=1500+1175x\\1200x-1175x=1500-1000\\25x=500$

Dividing both sides by 25

$\frac{25x}{25}=\frac{500}{25}\\x=20$

It will take 20 months for the cost to be same.

Keywords: function, division

Learn more about functions at:

#LearnwithBrainly

5 0

3 years ago