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melisa1 [442]
2 years ago
12

What is the area of a semicircle with diameter of 6

Mathematics
2 answers:
Korvikt [17]2 years ago
7 0
Your answer is 14.13.
Heres how I got it:
First, the formula for area of a semi circle is 3.14 x r^2 and divide by two.
To find the radius, we need to divide the diameter by two, which is 3.
Now, lets plug in our numbers. 
3.14 x 3^2/2
3.14 x 9/2
28.26/2
A=14.13
pogonyaev2 years ago
5 0
Area of circle = pi (d/2)^2
area of semi-circle =0.5* pi (d/2)^2
                             =0.5* pi (6/2)^2
                             =14.14

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When can you say that there is no solution for a system of linear equation
SCORPION-xisa [38]

Answer:

You can say there is no solution for a system of linear equation when the graphs are PARALLEL to each other.

ONE solution: when both lines intersect at one point

INFINITE solution: when the line goes on forever

NO solution: is when the lines are parallel to each other.

5 0
3 years ago
The task is in the attachment, thank you​
Novosadov [1.4K]

Answer:

m=0

Step-by-step explanation:

<em><u>mx²+2x-1=0</u></em>

if x=1/2 then

m(1/2)² +2(1/2)-1=0

m/4+1-1=0

m/4=0

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4 0
3 years ago
Popular magazines rank colleges and universities on their ""academic quality"" in serving undergraduate students. Describe two c
Reika [66]

Answer:

Quantitative: i) The number of students in the school vis - a - vis the number of classes in the school. In order words, simply number of students per class

ii) The rate of graduation of students.

Categorical:i) Courses being taken by students

ii) Region of country of students.

Step-by-step explanation:

To answer this question effectively, it's important for us to know that a quantitative variable usually has numerical values, and also have units of measure as well while categorical variables simply places each student into a specific category.

Now, the two quantitative variables we will consider are;

i) The number of students in the school vis - a - vis the number of classes in the school. In order words, number of students per class

ii) The rate of graduation of students.

Also, the two categorical variables we will consider are;

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5 0
3 years ago
Two mechanics worked on a car. The first mechanic charged $65 per hour, and the second mechanic charged $60 per hour. The mechan
Bess [88]

Answer:

First mechanic: 12.8 hours & Second mechanic:12.8 hours

First mechanic made 832$ & Second mechanic made 768$

Hope this is right. If not I apologize and please let me know:)

Step-by-step explanation:

First you would do 65+60=125. You do this to find how much they charge together. Then you would take the amount of money they make and divide that from 125: 1600/125=12.8. Now that you have 12.8 you would plug that in for each mechanic: 65 times 12.8=832 and 60 times 12.8=768. Now you have the amount of money each mechanic made and the amount of hours they worked.

4 0
3 years ago
It’s moving day and Lydia has packed her books into a large and small boxes. The large boxes hold 35 book and the small ones hol
Natali5045456 [20]

Answer:

4 large , 14 small

Step-by-step explanation:

35*x +20*(18-x)=420

35x +360-20x=420

35x-20x=420-360=60

15x= 60

x =4

4 large  14 small

5 0
3 years ago
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