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3 years ago

ANSWER QUICK PLEASESSS

Mathematics

1 answer:

RideAnS [48]3 years ago

4 0

Answer:

Step-by-step explanation:

1). y = - 4x + 7

Reflected across what????

if x-axis, then y ⇒ - y

So the answer would be y = 4x - 7

2). y = 2x - 14

3). y = 2x - 8

4). y = 12x + 9

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Which expression is equivalent

Tatiana [17]

Given expression is

$\sqrt[4]{\frac{16x^{11}y^8}{81x^7y^6}}$

Radical is fourth root

first we simplify the terms inside the radical

$\frac{x^{11}}{x^7}=x^4$

$\frac{y^(8)}{y^6}=y^2$

So the expression becomes

$\sqrt[4]{\frac{16x^4y^2}{81}}$

Now we take fourth root

$\sqrt[4]{16} = 2$

$\sqrt[4]{81} = 3$

$\sqrt[4]{x^4} = x$

We cannot simplify fourth root (y^2)

After simplification , expression becomes

$\frac{2x\sqrt[4]{y^2}}{3}$

Answer is option B

8 0

3 years ago

AB and CD are straight lines. Find AOD.

Anon25 [30]

Answer:

106°

Step-by-step explanation:

AOD = COB (because of vertical angles)

COB = COF + FOB

COF = 90

FOB = 16

COB = 90 + 16 = 106

AOD = 106

Hope this helps :)

Have a nice day!

3 0

2 years ago

What is 18.6÷ =0.02.

love history [14]

Answer:930

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

I need to understand this kindly help.....

AveGali [126]

Answer:

Section a)

Solution;

A correlation coefficient of 0.4 implies a relatively weak positive association between two sets of data. There is a notable small increment in one data set as the other increases.

Section b)

Solution;

A correlation coefficient of -0.96 implies a strong negative association between two sets of data. An increase in the values of one data set amounts to a decrease in the values of the other data set by approximately the same magnitude.

Section c)

Solution;

A correlation coefficient of -0.02 implies a weak negative association between two sets of data. An increase in the values of one data set amounts to a negligible decrease in the values of the other data set.

Section d)

Solution;

A correlation coefficient of 1.0 implies a perfect positive association between two sets of data. An increase in the values of one data set amounts to an increase in the values of the other data set by exactly the same magnitude. A scatter plot would reveal that the line y =x fits the data well.

Section e)

Solution;

A correlation coefficient of 0.86 implies a strong positive association between two sets of data. An increase in the values of one data set amounts to an increase in the values of the other data set by approximately the same magnitude.

Step-by-step explanation:

Correlation coefficient measures the degree of association between two variables or data sets. Correlation coefficients can be positive or negative and may imply weak or strong association between two data sets.

A correlation coefficient of less than 5 is implies a weak association while a value greater than or equal to 5 implies a strong association. Finally, a correlation of 1.0 implies perfect association.

7 0

3 years ago

6. Find the coordinates of A if M-1, 2) is the midpoint of AB and B has coordinates of (3.-5).

AlekseyPX

Answer:

A(-5,9)

Step-by-step explanation:

Let A(a,b)

Since M is the midpoint then of A(a,b) and B(3,-5) then

M( (a+3)/2 , (b-5)/2)

But it is given that M(-1,2)

So (a+3)/2 = -1 which implies a=-5

and (b-5)/2=2 which implies b=9.

Therefore A(-5,9)

4 0

3 years ago