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stiv31 [10]
3 years ago
7

Whats the best expansion for (x+5a+5b)(x+a-b) ​

Mathematics
1 answer:
jeka57 [31]3 years ago
4 0

Answer:

x² + 6ax + 4bx + 5a² - 5b²

Step-by-step explanation:

(x+5a+5b )(x+a-b) ​

x² +a x -bx +5ax + 5a² -5ab + 5bx + 5ab -5b²

x² + 6ax + 4bx + 5a² - 5b²

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Consider the population regression of log earnings [Yᵢ, where Yᵢ= ln(Earningsᵢ)] against two binary variables:
puteri [66]

Answer:

A) allows the population effect on log earnings of being married to depend on gender

Step-by-step explanation:

The regression equation of a dependent variable based on two or more independent variables is of the form:

Y=b_{0}+b_{1}X_{1} +b_{2}X_{2}+b_{3}X_{1}X_{2}

Here,

<em>Y</em> = dependent variable

X_{1} and X_{2} = independent variables

X_{1}X_{2} = interaction term

b_{1},\ b_{2}\ and \ b_{3} = regression coefficients.

If there is a significant interaction effect present then this implies that the effect of one independent variable (X_{1} orX_{2} ) on the dependent variable (<em>Y</em>) differs every time with different value of the other independent variable  (X_{1} orX_{2} ) .

The provided regression equation is:

Y_{i}=\beta _{0}+\beta _{1}D_{1i}+\beta_{2}D_{2i}+\beta _{3}D_{1i}D_{2i}+u_{i}

Y_{i} = dependent variable

D_{1i} and D_{2i} = independent variables

In this case the interaction term is defined as follows:

The effect of being married on log earnings is dependent on different values of the variables D_{2i}, i.e. the gender of the i^{th}person.

Thus, the correct option is (A).

3 0
3 years ago
CAN SOMEONE HELP ME ANSWER THIS ​
Katena32 [7]

Answer:

<h2>5 times</h2>

Step-by-step explanation:

30\cdot\dfrac{1}{6}=\dfrac{30}{6}=5

4 0
3 years ago
Percent of change from 115 to 338
MrRa [10]

Answer:

237 ⁹/23% change

Step-by-step explanation:

115=100%

337-155=273 which represents the increase

115=100

273=?

273×100÷115= 237 ⁹/23%

Answer =237⁹/23%

7 0
3 years ago
A juice manufacturing company designed a carton as shown below. What is the name of the three-dimensional
kodGreya [7K]

Answer: rectangular prism and a pyramid I think

Step-by-step explanation:

7 0
3 years ago
Graph the line with slope -3/4, passing through the points −3−3<br> .
snow_tiger [21]
Hello:
equation is the line is : y = ax+b        a is a slope
 y = (-3/4)x+b
<span>passing through the point (−3;−3) :   -3 =(-3/4)(-3)+b
y = (-3/4)x-(21/4)

</span>We draw the <span>Graph by two points : A(-3;-3)  B(0;-21/4)</span>

5 0
3 years ago
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