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neonofarm [45]
2 years ago
11

Please help!!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
kvasek [131]2 years ago
7 0
The answer is 70 to 80 students.
professor190 [17]2 years ago
4 0

Answer:

70-80

Step-by-step explanation:

You might be interested in
the amount of time a certain brand of light bulb lasts is normally distributed with a mean if 1800 hours and a standard deviatio
RUDIKE [14]

Answer:

340%

Step-by-step explanation:

4 0
3 years ago
The measures of three angles in a triangle are(2x+5) ,(x+17) , and (3x-4) What is the value of ?
Stells [14]

Answer:

x=27

Step-by-step explanation:

Triangle angle =180 degrees

180=2x+5+x+17+3x-4

180=6x+18

(180-18)/6=x

x=27

3 0
3 years ago
Find the average rate of change, in people per year, for the population between the years 1900 and 1920.​
elena-s [515]

Step-by-step explanation:

the average change rate of a function f(x) in an interval [x1 .. x2] is

(f(x2) - f(x1)) / (x2 - x1)

in our case that is

(7000 - 2500) / (20 - 0) = 4500 / 20 = 225

the population changed in average by 225 people per year from 1900 to 1920.

5 0
2 years ago
Blake and two friends equally shared the cups of water shown in the picture.
3241004551 [841]
The answer would be c- 2/6

there are six cups total and three (blake plus two others) friends

there are two ways you can solve this…

1. by making groups
if you look at the picture, you can split it into three groups because that is the number of people, then count how many cups there are in one group which will be your numerator for the denominator six which is the total

2. simple division
divide the total number of cups buy the number of people which is 3
you get two and follow the same process above

6 0
2 years ago
Solve y=x2 +7 fоr x.<br> ОА. x = t /у +7<br> ОВ. x= y +7<br> Ос. x=y-7<br> OD. х = + y -7
elena55 [62]

Answer:

x = ± \sqrt{y-7}

Step-by-step explanation:

Given

y = x² + 7 ( subtract 7 from both sides )

y - 7 = x² ( take the square root of both sides, thus

x = ± \sqrt{y-7}

5 0
3 years ago
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