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n200080 [17]
2 years ago
6

Which of the following statements are represented by

Mathematics
1 answer:
mote1985 [20]2 years ago
5 0

As razões que se aplicam são as seguintes:

“São 4 hambúrgueres

vendidos para cada 3 cheeseburgers vendidos na cafeteria." A proporção de

hambúrgueres vendidos para cheeseburgers vendidos é de 4:3.

"Há 20 notas de aprovação para cada 25 testes de matemática classificados.

A proporção de escores de aprovação para testes classificados é de 4:5."

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Plsss help. Thanks!!
slava [35]

Answer:

401

Step-by-step explanation:

1. Approach

To solve this problem, one first has to think about the given figure in a certain way. In the figure, one can see that it is a circle attached on either side of a rectangle. To find the perimeter of the figure, one has to find the circumference of the circle and then add two sides of the rectangle to the answer

2. Circumference of the circle

The formula to find the circumference of a circle is;

2r(pi) or d(pi)

~ diameter times the value (pi)

Normally to find the circumference of a semicircle, one would have to divide this formula by 2, but since in this case, one has to add two congruent semicircles, so therefore, the effect of dividing the equation by two, only to multiply by two again cancels, and hence, there is no need to divide by 2.

Substitute in the values;

(78)(pi)

~ 245

3. Find the perimeter of the entire object

Now, one has to add the two additional sides of the figure, to the circumferences of the semicircles to get the final answer;

78 + 78 + 245

= 401

3 0
2 years ago
Read 2 more answers
Of the 84 people who answered "yes" to a question, 14 were male. Of the 73 people that answered "no" to the question, 12 were ma
pantera1 [17]

Answer:

.611

Step-by-step explanation:

there were 84 people who answered yes plus an additional 12 men who said no. Add these up and you get 96. Divide that number by the number of people which is 157 and you get .611 rounded up.

4 0
2 years ago
Read 2 more answers
A container that holds sugar is shaped like a cylinder. The radius of the container is 3 inches,
kicyunya [14]

Answer:

B

Step-by-step explanation:

A cylinder is like circles staked on top of each other so you want to find the are of the top circle which is 28.26 because pi r^2 (3^2)*3.14. now you found the area of the top circle. The height is 10.5 so that means there are 10.5 layers so you multiply 28.26 by 10.5 i know its confusing im new to brainly but hopefully this answer helped you  You will get 296.73 because i rounded pi to 3.14 but the answer is B

8 0
3 years ago
A bacteria has a doubling period of 5 days. If there are 2350 bacteria present now, how many will there be in 22 days?
topjm [15]
First abswer is 51700
Sexond answer is 10340
6 0
3 years ago
100 POINTS AND BRAINLIEST ANSWER
polet [3.4K]

Answer:

Just took the test,  

1)d, 3

2)a, -13

3) c, y=-2x+6

4) c, f'(a)=8a+2

Step-by-step explanation:

For #3, graph f(x)=-x^2+5. Next graph y=-2x+6. You will see that the added equation touches at exactly the point (1,4). this make it the tangent line equation

5 0
3 years ago
Read 2 more answers
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