Questions in mathematics

Questions in mathematics

📝 Answered - In the formula $s=\frac{d}{t}$ where $s$ is speed, $d$ is distance, and $t$ is time, how would you solve for time $t$? a. $t=d s$ b. $t=\frac{s}{d}$ c. $t=\frac{d}{s}$ d. $t=s d$

📝 Answered - The function $f(t)$ gives the area of a circle with radius $r$. It can be written in equation form as $f(r)=3.14 r^2$. What is $f(4)$? A. 25.12 B. 50.24 C. 157.75 D. 19.14

📝 Answered - If $-2(2 x-11)=3(x-9)$, then $x=$ A. 2 B. 3 C. 5 D. 7

📝 Answered - Solve the equation algebraically and check graphically. $5 e^{5 x}=1115$ $x \approx$ $\square$ (Round to the nearest thousandth as needed.)

📝 Answered - What is the value of $x$ in the linear inequality? $-3(4 x-8.2)<-11.98 x+14 \frac{3}{4}$ A. $x<49.25$ B. $x>49.25$ C. $x<492.5$ D. $x>492.5$

📝 Answered - Graph the set {x |-1 < x <= 5}.

📝 Answered - If the area of a square is 64 square centimeters, what's the length of one side? A) 32 cm B) 16 cm C) 8 cm D) 4 cm

📝 Answered - What does [tex]h(40)=1400[/tex] mean in terms of the problem? | Hours of Training | Monthly Pay | |---|---| | 10 | 1100 | | 20 | 1200 | | 30 | 1300 | | 40 | 1400 | | 50 | 1500 | | 60 | 1600 | | 70 | 1700 | A. A worker with 40 hours of training is paid $1400 per month. B. A worker with 1400 hours of training is paid $40 per month. C. There are 40 workers who are paid $1400 per month. D. A worker who works 40 hours is paid $1400.

📝 Answered - Which expression gives the distance between the points $(2,5)$ and $(-4,8)$? A. $(2-4)^2+(5-8)^2$ B. $\sqrt{(2+4)^2+(5-8)^2}$ C. $\sqrt{(2-4)^2+(5-8)^2}$ D. $(2+4)^2+(5-8)^2$

📝 Answered - Sam is proving the product property of logarithms. Which expression and justification completes the third step of her proof? A. $\log _3(b^{x y})$; power rule of exponents B. $\log _3(b^{x-y})$; subtraction property of exponents C. $\log _3(3^{x+y})$; multiplication rule of exponents D. $\log _a(b^{\frac{x}{y}})$; division property of exponents