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jeka57 [31]
3 years ago
11

(2x2)+5-6(+56-9)x22-3)6-1(56+7)

Mathematics
1 answer:
Radda [10]3 years ago
7 0

Answer:

-32202

Step-by-step explanation:

Given,\\\\(2\times2)+5-6(56-9)\times(22-3)\times6-1(56+7)\\\\=4+5-6\times47\times19\times6-63\\\\=4+5-32148-63\\\\=9-32211\\\\=-32202

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(10 point's) 10 1/3 + 7/9 =
maks197457 [2]
10 1/3 = 10 3/9
3/9 + 7/9 = 1
10 + 1 = 11
Answer = 11
4 0
3 years ago
The correlation between the height and weight of children aged 6 to 9 is found to be about r = 0.8. Suppose we use the height x
Andrew [12]

Answer:

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}

The value of r is always between -1 \leq r \leq 1

And we have another measure related to the correlation coefficient called the R square and this value measures the % of variance explained between the two variables of interest, and for this case we have:

r^2 = 0.8^2 = 0.64

So then the best conclusion for this case would be:

c. the fraction of variation in weights explained by the least-squares regression line of weight on height is 0.64.

Step-by-step explanation:

For this case we know that the correlation between the height and weight of children aged 6 to 9 is found to be about r = 0.8. And we know that we use the height x of a child to predict the weight y of the child

We need to rememeber that the correlation is a measure of dispersion of the data and is given by this formula:

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}

The value of r is always between -1 \leq r \leq 1

And we have another measure related to the correlation coefficient called the R square and this value measures the % of variance explained between the two variables of interest, and for this case we have:

r^2 = 0.8^2 = 0.64

So then the best conclusion for this case would be:

c. the fraction of variation in weights explained by the least-squares regression line of weight on height is 0.64.

3 0
3 years ago
A number p is greater than or equal to –17.<br> How do I find the answer?
Mila [183]

Answer:

You're answer has be written as an inequality, therefore it would be;

=> p ≥ -17

Hope this helps!

8 0
3 years ago
Read 2 more answers
How many solutions does the following equation have?<br> -6(x + 7) = -4.x - 2
mestny [16]

Answer:

x=-20

Step-by-step explanation:

Given

-6(x+7)= -4x - 2

First of all, we have to solve brackets

So,

-6x-42=-4x-2

To find the solution of this equation, we have to isolate x on one side of the equation.

Adding 4x on both sides

-6x-42+4x = -2-4x+4x

-2x-42 = -2

Adding 42 on both sides

-2x-42+42 = -2+42

-2x=40

Dividing both sides by -2

-2x/2 = 40/-2

x = -20

The equation has only one solution which is x=-20 ..

5 0
3 years ago
The set of independent variables of a function is the ____.
Anon25 [30]
<span>independent variables  is that whose variation does not depend on other
</span><span>The set of independent variables of a function is the
Domain
which is defined as set of input values of independent variables
so correct option i conclude is A
hope it helps</span>
6 0
4 years ago
Read 2 more answers
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