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andre [41]
3 years ago
10

At East Junior High School, there are a total of 1175 students in the 7th and 8th

Mathematics
1 answer:
Agata [3.3K]3 years ago
5 0

Answer:

7th grade has 1100 and 8th has 75

Step-by-step explanation:

here's why...........1100 plus 75 is the total of 1175

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You randomly choose one of the tiles. Without replacing the first tile, you choose a second tile. What is the probability of the
hjlf

Answer:

P odd number, then 20) = 1 /14

Step-by-step explanation:

P( odd number) =  number of odd numbers/ total

number of odd numbers = 3

total = 7

P( odd number)   = 3/7

We keep the tile so that there are only 6 tiles left

P (20) = number of 20/ total

          = 1/6

We multiply the probabilities together

P odd number, then 20) = 3/7 * 1/6 = 3/42 = 1 /14

4 0
3 years ago
During the calendar year of 1971 a total of 171 deaths were caused by influenza in a city of 450,000 persons. The temporal distr
masha68 [24]

Answer and Step-by-step explanation:

The computation of annual and quarterly mortality rates per 100,000 population is shown below:-

Quarterly mortality rates are

= \frac{Deaths}{Population\ in\ the\ city}\times Population

For the first quarter

= \frac{54}{450,000}\times 100,000

= 12  death per 100,000 population

For the second quarter

= \frac{43}{450,000}\times 100,000

= 9.5  death per 100,000 population

For the third quarter

= \frac{35}{450,000}\times 100,000

= 7.7  death per 100,000 population

For the fourth quarter

= \frac{39}{450,000}\times 100,000

= 8.6  death per 100,000 population

Now the annual mortality is

= \frac{Deaths}{Population\ in\ the\ city}\times Population

= \frac{171}{450,000}\times 100,000

= 38 death per 100,000 population

3 0
3 years ago
A line segment has a midpoint of (-3,2) and an endpoint of (-6,4). What is the other endpoint of the line segment?
elena-14-01-66 [18.8K]
Lets take the x and the y values individually.
So the endpoint x is -6 and the midpoint x is -3. The difference between the two is 3 values. 
So if -6 is one end of x, then -3+3 will be the other end, which will be 0
The x value of the other endpoint is 0.
Now lets look at the y value. The endpoint is 4 and the midpoint is 2. The difference between the two is 2 values.
So if 4 is one end of y, then the other end of y will be 2-2= 0.
So the y value of the other endpoint is 0.
SO the coordinates of the other endpoint will be (0,0)
3 0
3 years ago
G is the centroid of tiangle ABC, AB = AC, AD= 15, CG= 13, and AD is perpendicular to CB. Find the length of the segment. ​
notsponge [240]

Answer:

AG=13

AB=AC

AD is | to BC

CG=BG

line segments is BG or GB

4 0
3 years ago
Help please it’s<br> Maths
vova2212 [387]

Answer:

a is 81 and b is 6

Step-by-step explanation:

5 0
3 years ago
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