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Alexandra [31]
2 years ago
12

75% of students were boys. there 18 boys in the class wht is the total number of students

Mathematics
1 answer:
Kaylis [27]2 years ago
5 0

Answer:

the answer is 24.

Step-by-step explanation:

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Solve the equation 1) 4.3^x+1 = 27+9^x<br> 2) 3^x+5= 3^x+3+8/3
Bad White [126]

Answer:

Step-by-step explanation:

4*3^x+1=27+(3^2)^x

(3^2)^x=(3^x)^2

3^x=t

4t+1=27+t^2

t^2-4t+27-1=0

t^2-4t+26=0

delta=4^2-4*1*26=16-84=-68<0

the  equation has not real solutions

3 0
3 years ago
Haley earns $18 an hour working at the doctor's office. She decided to graph her earnings using x to represent the number of hou
dimaraw [331]

The slope would be her hourly rate.

You would multiply her hourly rate by number of hours to find total pay.

Slope = $18 per hour

4 0
3 years ago
Read 2 more answers
Over the last three evenings, Lena received a total of 111 phone calls at the call center. The third evening, she received 3 tim
Alchen [17]

Answer:

Lena famous or sum y she getting sm calls?!

Step-by-step explanation:

3 0
3 years ago
The coordinate plane below represents a town. Points A through F are farms in the town.
prohojiy [21]

Part A;
There are many system of inequalities that can be created such that only contain points D and E in the overlapping shaded regions.

Any system of inequalities which is satisfied by (-4, 2) and (-1, 5) but is not satisfied by (1, 3), (3, 1), (3, -3) and (-3, -3) can serve.
An example of such system of equation is
x < 0
y > 0
The system of equation above represent all the points in the second quadrant of the coordinate system.The area above the x-axis and to the left of the y-axis is shaded.


Part B:It can be verified that points D and E are solutions to the system of inequalities above by substituting the coordinates of points D and E into the system of equations and see whether they are true.
Substituting D(-4, 2) into the system
we have:
-4 < 0
2 > 0
as can be seen the two inequalities above are true, hence point D is a solution to the set of inequalities.
Also, substituting E(-1, 5) into the system we have:
-1 < 0
5 > 0
as can be seen the two inequalities above are true, hence point E is a solution to the set of inequalities.

Part C:Given that chicken can only be raised in the area defined by y > 3x - 4.
To identify the farms in which chicken can be raised, we substitute the coordinates of the points A to F into the inequality defining chicken's area.
For point A(1, 3): 3 > 3(1) - 4 ⇒ 3 > 3 - 4 ⇒ 3 > -1 which is true
For point B(3, 1): 1 > 3(3) - 4 ⇒ 1 > 9 - 4 ⇒ 1 > 5 which is false
For point C(3, -3): -3 > 3(3) - 4 ⇒ -3 > 9 - 4 ⇒ -3 > 5 which is false
For point D(-4, 2): 2 > 3(-4) - 4; 2 > -12 - 4 ⇒ 2 > -16 which is true
For point E(-1, 5): 5 > 3(-1) - 4 ⇒ 5 > -3 - 4 ⇒ 5 > -7 which is true
For point F(-3, -3): -3 > 3(-3) - 4 ⇒ -3 > -9 - 4 ⇒ -3 > -13 which is true
Therefore, the farms in which chicken can be raised are the farms at point A, D, E and F.
7 0
2 years ago
Isabel joins a service to download movies. She pays $2 per movie, but she gets the first 5 movies for free. How many movies, m,
Damm [24]

The first question the answer to it is 30.

To do that divide 50/2 and see how many movies she can buy, which 25, then add the 5 free movies which gives you 30.

And the second part of the question I think is missing a picture or something.

3 0
3 years ago
Read 2 more answers
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