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Eva8 [605]
3 years ago
13

The diameter of a circle is two times its radius. Which equation shows another way to represent the area of a circle?

Mathematics
1 answer:
horrorfan [7]3 years ago
4 0
If the area for a circle is A= \pi  r^{2}, you can write it in terms of its diameter like this: A= \pi ( \frac{1}{2}d) ^{2}
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A contractor estimated that one of his two brick layers would take 9 hours to build a certain wall and the other 10 hours. Howev
Dmitry [639]

Answer:

900

Step-by-step explanation:

Assume x brick

X*(1/9+1/10)一 10=X/5

X(19/90-1/5)=10

X*(1/90)=10

X=900

6 0
3 years ago
A college student took 4 courses last semester. His final grades, along with the credits each class is worth, are as follow: A (
NikAS [45]

Answer:

A college student took 4 courses last semester. His final grades, along with the credits each class is worth, are as follow: A (3), B (4), C (2), and D (3). The grading system assigns quality points as follows: A: 4; B: 3; C: 2; D: 1; and F: 0. Find the student’s GPA for this semester. Round your answer to the nearest thousandth.

another way is

This is a weighted average question. You are going to "weight" each course by the number of credits it is worth and then divide by the total number of credits. In other words, you are going to multiply each grade (A=4, B=3) by the number of credits attached to that grade. This will ensure that the courses that have more credits count more in the overall average. Then you are going to divide by the total number of credits to get the overall GPA.

So,

(3*4 + 4*3 + 2 *2 + 3*1)/(3+4+2+3) = GPA

Step-by-step explanation:

bran-list please

6 0
3 years ago
Someone help Me it’s timed!!!
Orlov [11]

Answer: v=42

Step-by-step explanation:

18+(6)(4)

3 0
3 years ago
Read 2 more answers
A class of students consists of 9 men and 51 women. Write a proper fraction to represent the part of the class that is women. Re
balandron [24]

Answer:

85%

Step-by-step explanation:

9+51 = 60

(51/3) ÷ (60/3) = 17/20

(17/20)% = 85%

5 0
2 years ago
A cylindrical container has a base area of 100 m2 and is 12m high. if the container is one-third filled with water, what's the v
docker41 [41]
Volume of water=\frac{1}{3}*BA*H
V=\frac{1}{3} *100 m^{2} *12m
V=400m^{3}
5 0
3 years ago
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