Questions in Grade High-school

Questions in Grade High-school

[Done] When your body digests food, is the food changed into a new substance?

[Done] Horace Bushnell is associated with which idea?

[Done] What contribution did Jonas Salk make to science in the 1950s?

[Done] In a mayoral election, the number of votes for the incumbent was 25% more than the number for the opponent. Altogether, the two candidates received 5,175 votes. How many votes did the incumbent mayor receive?

[Done] The sum of 12 and the quantity 8 times a number \( k \) is equal to 48. Express this as an equation: \[ 12 + 8k = 48 \]

[Done] What is the value of the expression when \( a = 4 \) and \( b = 3 \)? \[ 4a + b - 5 \] A. 2 B. 14 C. 7 D. 6

[Done] 6.3 is 7% of what number?

[Done] Solve for \( x \) and justify each step. \[ 3x - 7 = 5x - 19 \]

[Done] The voltage across a charged capacitor, measured in volts, is given by the equation [tex]V(t) = 4(2.72)^{\frac{-t}{2}}[/tex], where [tex]t[/tex] is measured in seconds since the current was removed. Include at least three decimal places in all your answers. a. What is the voltage after 2 seconds? b. What is the 1-second growth factor? c. When will the voltage be 1 volt? d. When will the voltage be [tex]x[/tex] volts? (Your answer should be an exact expression with [tex]x[/tex] in it)

[Done] The pet store has 54 birds. There are 9 birds in each cage. How many cages are there? Show your work.