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erik [133]
3 years ago
8

A university has 28,980 students. In a random sample of 180 students, 12 speak three or more languages. Predict the number of st

udents at the university who speak three or more languages. The expected number of students at the university who speak three or more languages is .
Mathematics
1 answer:
anygoal [31]3 years ago
5 0
Word | know | Unknown
Language| 12 | x
Total | 180 | 28980
Use cross multiply:
12(28980) = 180(x)
347760 = 180x
347760/180=1932
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One number exceeds another by 5 the sum of the numbers is 37 . What are the numbers
Eduardwww [97]
One number = x
Another number = y

x = y + 5
x + y = 37

(y + 5) + y = 37
2y + 5 = 37
2y = 32
y = 16

x = (16) + 5
x = 21

The numbers are 16 and 21.
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3 years ago
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statuscvo [17]

Answer:they all equal 69

Step-by-step explanation:

6 0
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stellarik [79]

Answer:

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3 years ago
Find the equation of the line through point (5,1) and perpendicular to 5x−y=−3. Use a forward slash (i.e. "/") for fractions (e.
IRINA_888 [86]
Y = -1/5x + 2

A line perpendicular to another line has an opposite reciprocal slope. What opposite means is that you flip the sign (from - to + or from + to -) and reciprocal means that you flip the numerator and denominator (so if line A is perpendicular to line B and line As slope is -3, line Bs slope would be 1/3).

First find the slope of 5x - y = -3
Add y to both sides
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Plug the slope of the perpendicular line and the point (5, 1) into point slope form to solve the equation

y - y1 = m(x - x1)
y - 1 = -1/5(x - 5)
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