Questions in mathematics

Questions in mathematics

[Done] Ken spends \(\frac{1}{5}\) of his money on a dictionary. He gives \$21 to his brother and has \(\frac{1}{2}\) of his money left. How much money does Ken have in total?

[Done] Allen runs 8 miles in 3 hours at a steady pace. How long does it take him to run 3 miles?

[Done] A number \( x \) is increased by 6, and then the sum is doubled.

[Done] Find the midpoint of the line segment joining the points \(P_1\) and \(P_2\). \(P_1 = (3, -4)\); \(P_2 = (5, 4)\)

[Done] Use reference angles to find the exact value of [tex]\tan 405^\circ[/tex].

[Done] The boiling point of krypton is \(-152°C\). The boiling point of radon is \(-6°C\). What is the difference between the two boiling points?

[Done] A bank allows university students a $1000 overdraft facility on their bank accounts. In one month, a student was $675 overdrawn. The next month, the same student was $730 overdrawn. What is the difference between these two amounts?

[Done] The highest recorded temperature in the UK is 39°C. The lowest recorded temperature in the UK is -27°C. What is the difference between these two amounts?

[Done] If [tex]f(x) = 2x + 1[/tex], what is [tex]f(-3)[/tex]?

[Done] Which equation is represented by the function table below? x: 1, 2, 3, 4 y: 8, 14, 20, 26