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3 years ago

I need help with this, PLEASE

Mathematics

2 answers:

Genrish500 [490]3 years ago

3 0

Answer:

Mean = 3

Step-by-step explanation:

0 + 0 + 1 + 1 + 1 + 2 + 3 + 4 + 4 + 5 + 6 + 6 + 6 = 39

39/13 = 3

Lady bird [3.3K]3 years ago

3 0

Answer:

The mean is 3

Step-by-step explanation:

If you add every x like this: 6+6+6+5+4+4+3+2+1+1+1 in your calculator, you'll get 39 then divide by the number of x's which is 13 you'll get 3. Good luck!!

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How would I solve for x

Fed [463]

Answer:

x=10

Step-by-step explanation:

The 3 angles of a triangle add to 180

4x+60+80 = 180

Combine like terms

4x+140 =180

Subtract 140 from each side

4x+140-140=180-140

4x = 40

Divide by 4

4x/4 = 40/4

x = 10

5 0

3 years ago

Read 2 more answers

If x+y=12 and xy=27 . find x^3+y^3<br>pls help with steps

Ivan

Answer:

Step-by-step explanation:

use formula

x^3+y^3=(x+y)^3-3*x*y(x+y)

=12^3-3*27(12)

=1728-972

=756

8 0

3 years ago

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mr. dean has an even number of cats and an odd number of dogs. which of these choices could tell about his pets ? 6 cats and 3 d

valina [46]

Even numbers can be divided evenly into groups of two. The number four can be divided into two groups of two.

Odd numbers can NOT be divided evenly into groups of two. The number five can be divided into two groups of two and one group of one.

Even numbers always end with a digit of 0, 2, 4, 6 or 8.
2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30 are even numbers.

Odd numbers always end with a digit of 1, 3, 5, 7, or 9.
1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31 are odd numbers.

The correct answer is 6 cats and 3 dogs.

4 0

3 years ago

A food packet is dropped from a helicopter and is modeled by the function f(x) = −15x2 + 6000. The graph below shows the height

melisa1 [442]

General Idea:

Domain of a function means the values of x which will give a DEFINED output for the function.

Applying the concept:

Given that the x represent the time in seconds, f(x) represent the height of food packet.

Time cannot be a negative value, so

$x\geq 0$

The height of the food packet cannot be a negative value, so

$f(x)\geq 0$

We need to replace $-15x^2+6000$ for f(x) in the above inequality to find the domain.

$-15x^2+6000\geq 0 \; \; [Divide \; by\; -15\; on\; both\; sides]\\ \\ \frac{-15x^2}{-15} +\frac{6000}{-15} \leq \frac{0}{-15} \\ \\ x^2-400\leq 0\;[Factoring\;on\;left\;side]\\ \\ (x+200)(x-200)\leq 0$

The possible solutions of the above inequality are given by the intervals $(-\infty , -2], [-2,2], [2,\infty )$ . We need to pick test point from each possible solution interval and check whether that test point make the inequality $(x+200)(x-200)\leq 0$ true. Only the test point from the solution interval [-200, 200] make the inequality true.