The president of the university plans a speech to an alumni group

Mathematics

1 answer:

stealth61 [152]3 years ago

3 0

Answer:

The proportion of respondents who are first attenders is then a sample statistics, while the proportion of the entire student body that are first attenders is a population parameter.

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Can u help me plss i’ll give u brainliest

svet-max [94.6K]

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The answer is

Step-by-step explanation:

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prisoha [69]

I think the answer is C

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What is the solution of 10=|7-3x|

Tom [10]

$10=|7-3x| \\ 7-3x=10 \vee 7-3x=-10\\ 3x=-3 \vee 3x=17\\ x=-1 \vee x=\dfrac{17}{3}$

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The sum of four times a number and five times another number is -28. The sum of nine times the first number and two times the se

Rina8888 [55]

Answer:

Step-by-step explanation:

$x,\ y-the\ numbers\\\\\text{The sum of four times a number and five times another number is -28:}\\\\4x+5y=-28\\\\\text{The sum of nine times the first number and two times the second number is 11:}\\\\9x+2y=11\\\\\text{We have the system of equations:}\\\\\left\{\begin{array}{ccc}4x+5y=-28&\text{multiply both sides by2}\\9x+2y=11&\text{multiply both sides by (-5)}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}8x+10y=-56\\-45x-10y=-55\end{array}\right}\qquad\text{add both sides of the equation}$

$.\qquad-37x=-111\qquad\text{divide both sides by (-37)}\\.\qquad\qquad\boxed{x=3}\\\\\text{Put the value of x to the first equation:}\\\\4(3)+5y=-28\\12+5y=-28\qquad\text{subtrac 12 from both sides}\\5y=-40\qquad\text{divide both sides by 5}\\\boxed{y=-8}$

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3 years ago

Evaluate the algebraic expressions for the given value of each variable

baherus [9]

Plug in 4 for r and 1 for s

r+s^2
4+1^2

Evaluate exponents first (order of operations)
4+1

Add
5

Final answer: 5

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