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3 years ago

If the means of 4,6,9,Y, 16 and 19 is 13, what is the value of y

Mathematics

2 answers:

Varvara68 [4.7K]3 years ago

6 0

Answer:

-246

Step-by-step explanation:

Add all the numbers together and divide by the amount of numbers added to find the mean. -246 is the only right answer.

prohojiy [21]3 years ago

4 0

Answer:

Step-by-step explanation:

To get the mean, you have to add all the numbers together, and then divide them by how many numbers there are. Here, i'll show you.

There are 6 numbers, including $Y$ , which we need to find out.

The Equation: $\frac{4+6+9+Y+16+19}{6} = 13$

We can simplify this equation into, $\frac{54 + Y}{6} = 13$

To find $Y\\$ , we can do the inverse, and multiply $13$ by $6$ .

(The 6 on the left side of the equation is then cancelled out)

$\frac{54+Y}{6} = 13$ becomes $54 +Y =13$ × $6\\$

$13$ × $6 = 78$ so then $54 + Y = 78$

For this final equation to be true, $Y$ would have to equal $14$ .

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Which equation is represented by the table?

MatroZZZ [7]

Answer:

$y=-|x-3|-3$

Step-by-step explanation:

The table shows values of $y$ for different values of $x$ .

Let us test each equation with the values given in the table.

Equation 1: $y=|x+3|-3$

For $x$ = 1, we get,

$y=|x+3|-3=|1+3|-3=|4|-3=4-3=1$

So, we got 1 for $y$ . But as per table, value of $y$ should be -5.

So, equation 1 is incorrect.

Equation 2: $y=-|x-3|-3$

For $x$ = 1, we get,

$y=-|x-3|-3=-|1-3|-3=-|-2|-3=-(2)-3=-5$

So, we got -5 for $y$ . It matches with the value of table.

Let us check for another value of $x$ in order to confirm.

For $x =2$ , we get,

$y=-|x-3|-3=-|2-3|-3=-|-1|-3=-(1)-3=-4$

So, we got -4 for $y$ . It matches with the value of table.

So, equation 2 is the correct answer.

We can be completely sure by checking the remaining equations too.

Equation 3: $y=|x-3|-3$

For $x$ = 1, we get,

$y=|x-3|-3=|1-3|-3=|-2|-3=2-3=-1$

So, we got -1 for $y$ . But as per table, value of $y$ should be -5.

So, equation 3 is incorrect.

Equation 4: $y=-|x+3|-3$

For $x$ = 1, we get,

$y=-|x+3|-3=-|1+3|-3=-|4|-3=-4-3=-7$

So, we got -7 for $y$ . But as per table, value of $y$ should be -5.

So, equation 4 is incorrect.

3 0

3 years ago

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tino4ka555 [31]

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V = (10 ft)(19 ft)(20 ft) = 3800 cubic feet.

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3 years ago

How many meters per hour can the falcon fly

mr_godi [17]

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3 0

3 years ago

Pls answer! i will mark brainliest!

Volgvan

Answer:

3 inches

Step-by-step explanation:

(14+2x) × (15+2x) = 2(14×15)

210 +30x +28x + 4x² = 420

4x² + 58x - 210 = 0

2x² + 29x - 105 = 0

2x² + 35x - 6x - 105 = 0

x(2x + 35) - 3(2x + 35) = 0

(x - 3)(2x + 35) = 0

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3 0

4 years ago

A circular plot with a 160 foot diameter is watered by a spray irrigation system. To the nearest square foot, what is the area t

Anuta_ua [19.1K]

A circular plot is watered by a sprinkler that rotates through it. The sprinkler only rotates through a semi-circle, or half of the whole circle.

Area of a circle: A = pi x r^2

r = 160 / 2 = 80

A = pi x 80^2

A = 6400pi / 2 = 3200pi

3200pi = 10053.0965

The area water is approximately 10,053 ft^2.

Hope this helps!! :)

4 0

3 years ago

If the means of 4,6,9,Y, 16 and 19 is 13, what is the value of y​

If the means of 4,6,9,Y, 16 and 19 is 13, what is the value of y