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Mila [183]
3 years ago
11

Distributive property to write an equivalent expression 9(9m+3t)

Mathematics
1 answer:
Klio2033 [76]3 years ago
7 0

Answer:

Step-by-step explanation:

 9(9m+3t) = 9 *9m + 9*3t

                 = 81m + 27t

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What is the equation of a circle with center of (4,2) passing through the point (7,2)
attashe74 [19]

Answer:

(x-4)^2 + (y-2)^2 = 3^2

or

(x-4)^2 + (y-2)^2 = 9 (simplified if needed)

Step-by-step explanation:

-Equation of a circle is:

(x-h)^2+(y-k)^2=r^2 where the center is (h, k) and the radius is r^2.

-Place the center and the point onto that equation:

(7-4)^2+(2-2)^2=r^2

-Then, you solve:

(7-4)^2+(2-2)^2=r^2

(3)^2+(0)^2=r^2

9 +0=r^2

9=r^2

\sqrt{9} =\sqrt{r^2}

3=r

-So, the result is:

(x-4)^2+(y-2)^2=3^2

or

(x-4)^2+(y-2)^2=9 (simplified if needed)

3 0
3 years ago
Ar a furniture store, a bed frame costs $440 and mattress costs $654. There are currently 7 bed frames in the store, and togethe
Gnoma [55]

Answer:

the three angles of a triangle have measures x,2x,and 4y,where x>56.If x and y are integers, what is one possible value of y?

6 0
2 years ago
Juana gana $4.00 la hora. En un día en el que ella trabaja de 9:30am a 3:00pm ¿Cuanto ganará?
EleoNora [17]

Answer:$26

Step-by-step explanation:

3 0
3 years ago
Suppose John is a high school statistics teacher who believes that watching many hours of TV leads to lower test scores. Immedia
Hatshy [7]

This question is incomplete, the complete question is;

Suppose John is a high school statistics teacher who believes that watching many hours of TV leads to lower test scores. Immediately after giving the most recent test, he surveyed each of the 24 students in his class and asked them how many hours of TV they watched that week. He then matched each student's test grade with his or her survey response. After compiling the data, he used hours of TV watched to predict each student's test score. He found the least-squares regression line to be y"  = -1.5x + 85.

He also calculated that the value of r, the correlation, was -0.61.

what is the correct value of the coefficient of determination R² and give a correct interpretation of its meaning

Answer:

Interpretation of coefficient of determination R² = 0.3721

R² = 0.3721, meaning 37.21% of the total variation in test scores can be explained by the least square regression line

Step-by-step explanation:  

Given the data in the question;

the least square regression line is;

y"  = -1.5x + 85

the correlation coefficient r = -0.61

Now, the coefficient of determination R² is square of correlation coefficient r

R² = -61²

R² = 0.3721

8 0
3 years ago
A wine store conducted a study. It showed that a customer does not tend to buy more or fewer bottles when more samples are offer
aniked [119]
We can conclude that samples won’t affect how many bottles of wine a customer will buy.
4 0
3 years ago
Read 2 more answers
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