History smarties please help, you get a free boba

5 points Two lines are represented by equations: 10x - 15y = 21 and y = kx + 5. What value of k will make lines perpendicular? Help please!!!Thanks If f(x)=4x-1 , what is f(1) ?? whats the value of x? the sum of three numbers is 112. the third number is 3 times the first. the second number is 7 more than the first. what are the numbers? I NEED HELP!!Pls help A builder could get 9 sheets of Sheetrock for $20. If he bought 15 sheets, how much money would he have spent? critics of classical management theory F(x)=1/ x shift 9 units right and 4 units down Which pair of adjacent angles is supplementary? A. Pair A B. Pair B C. Pair C D. Pair D convert into 24 hours clock.4.17pm PLEASE ANSWERRR! FIRST CORRECT ANSWER WILL VOTE BRAINLIESTFor a certain value of k, the systemx + y + 3z = 10,-4x + 3y + 5z = 7,kx + z = 3has no solutions. What is this value of k? Mara has no money. In order to buy a gift, she borrowed $35 from her mom. When her birthday came, she received $125 dollars. If she repays her mom, how much money will she have? What does the phrasewaves lappingmean in the following sentence?He fell asleep listening to thewaves lappingonto the shore anddreamed of tiny turtles being drawn to the sound. A shoe store recorded the price (in dollars) of 175 pairs of women's shoes and 175 pairs of men's shoes. The data collected was used to create the following table. 14 POINTS!!Which model represents the product 6 x 3/4? will give brainliest Identify the slope and y intercept of the function y=4x-9 help please and thanks a man gives 40 percent of his money to his children and 20% of the remaining to a trust if we still left with 9600 what did he originally have