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Questions in mathematics

[Answered] What is the following quotient? $\frac{1}{1+\sqrt{3}}$

[Answered] Write an equivalent expression by distributing the "-" sign outside the parentheses: $(2.9 c+1)$

[Answered] Sandy is trying to reconstruct her spending pattern from July. She knows that she had $277 in her account on July 1, but after that, her receipts and balance statements are all scrambled. Here are Sandy's records: | Date | Transaction Type | Amount ($) | | :----- | :--------------- | :--------- | | 7/26 | Purchase | 86 | | 7/25 | Deposit | 76 | | 7/4 | Purchase | 137 | | 7/6 | Deposit | 90 | | 7/10 | Purchase | 131 | | 7/9 | Purchase | 145 | | 7/15 | Deposit | 152 | | 7/19 | Purchase | 137 | Assuming that this is a complete, if scrambled, record of Sandy's July spending and that any overdraft fees incurred do not affect the running total, how many times did Sandy overdraw her account in July? A. Sandy never overdrew her account. B. Sandy only overdrew her account once. C. Sandy overdrew her account twice.

[Answered] Find the absolute value: |16.8|

[Answered] Each data pair shown is of the form below: (years since purchase, value of car) Based on the correlation coefficient, there is a(n) __________ linear correlation between the data. Linear Regression [tex]y=-3223.31 x+31805.583 ; r=-0.988[/tex] [tex]-0.7000\ \textless \ x \leq 7.7[/tex] [tex]\text { Window: } 8913.1 \leq y \leq 33007.9[/tex]

[Answered] Which function has real zeros at [tex]$x=-10$[/tex] and [tex]$x=-6$[/tex]? [tex]$f(x)=x^2+16 x+60$[/tex] [tex]$f(x)=x^2-16 x+60$[/tex] [tex]$f(x)=x^2+4 x+60$[/tex] [tex]$f(x)=x^2-4 x+60$[/tex]

[Answered] Select the correct answer. The difference of two trinomials is [tex]$x^2-10 x+2$[/tex]. If one of the trinomials is [tex]$3 x^2-11 x-4$[/tex], then which expression could be the other trinomial? A. [tex]$2 x^2-x-2$[/tex] B. [tex]$2 x^2+x+6$[/tex] C. [tex]$4 x^2+21 x+6$[/tex] D. [tex]$4 x^2-21 x-2$[/tex]

[Answered] Simplify the expression. What classification describes the resulting polynomial? $\left(x^2+7 x\right)+\left(2 x^2-7 x\right)$ A. quadratic binomial B. quadratic monomial C. linear binomial D. linear monomial

[Answered] Find the product and write in lowest terms. $\frac{6}{7} \cdot \frac{3}{11}$

[Answered] $\frac{9-|3-7|}{2^{-1}}$