Today is Monday 2/5/18

Transcription

1 D Nw: -Take calculatr -Take ut HW -Cpy tnight's HW Tday is Mnday 2/5/18 -Study fr midterm! -Part 1 tmrw, part 2 Wednesday -Extra help 6:50AM

2 1) Use the diagram t answer the fllwing a. If the measure f < 4 is 95, then the measure f < 7 is b. If the measure f < 6 is 37, then the measure f < 4 is

3 2) In the diagram shwn, AD crsses BE at pint C. Part A: Explain hw yu can tell that Triangle ABC is similar t Triangle DEC. E A C D Part B: Suppse the measure f < B is 48. B List the measures f the remaining angles. < E = < A = < D = < BCA = < ECD = 3) What value f a makes the equatin belw true? 3a + 5a 6 = 14

4 4) Rectangle ABCD is graphed n the crdinate grid belw. A B Reflect Rectangle ABCD ver the x axis. D C What is the y crdinate f pint B'? 5) Alyssa and Nick are saving their allwances t buy Pitbull tickets. Alyssa has saved $20 already and earns a $10 allwance each week. Nick has saved $30 already and earns a $5 allwance each week. Part A: Write a system f equatins that can represent this situatin. Use x t represent the number f weeks and y t represent the ttal amunt saved. Equatin fr Alyssa Equatin fr Nick

5 #5 Part B: After hw many weeks will Alyssa and Nick have the same amunt f mney saved? Use yur equatins frm Part A t slve the system f equatins. (Use graphing r substitutin) Number f weeks 6) Yu have $ in the bank and will save $24.75 each week t purchase a televisin. Let x = the number f weeks and y= the ttal amunt saved. Part A: Write an equatin t represent hw much mney yu will save after x weeks. Part B: Yu need $ fr a new televisin. If yu save fr 11 weeks, will yu have enugh mney fr yur televisin? Using yur equatin frm part A, justify yur answer.

6 7) A car is traveling at a speed f 25 miles per hur. Once the car starts t brake, its speed (s) is related t the number f secnds (t) it spends braking accrding t the frmula shwn belw. s = 10t + 25 Part A: Draw and label a graph that represents this situatin n the crdinate grid belw. Part B: Determine hw many secnds it takes fr the car t stp. Time t stp is secnds 8)Triangle ABC is graphed n the crdinate grid belw. Reflect Triangle ABC ver the y axis. A C B What is the x crdinate f pint C'?

7 9) What value f w makes the equatin belw true? 7w + 2w 8 = 25 10)Use the diagram t answer the fllwing a. If the measure f < 4 is 93, then the measure f < 7 is b. If the measure f < 6 is 43, then the measure f < 4 is

8 11) Yu have $ in the bank and will save $50.75 each week t purchase a new iphne. Let x = the number f weeks and y = the ttal amunt saved. Part A: Write an equatin representing hw much mney yu will have saved after x weeks. Part B: Yu need $ fr a new iphne. If yu save fr 13 weeks, will yu have enugh mney fr a new iphne? Using yur equatin, justify yur answer. 12) A car is traveling at a speed f 30 miles per hur. Once the car starts t brake, its speed (s) is related t the number f secnds (t) it spends braking accrding t the frmula shwn belw. s = 5t + 30 Part A: Draw and label a graph that represents this situatin n the crdinate grid belw. Part B: Determine hw many secnds it takes fr the car t stp. Time t stp is secnds

9 13) In the diagram shwn, AD crsses BE at pint C. Part A: Explain hw yu can tell that Triangle ABC is similar t Triangle DEC. E A B C D Part B: Suppse the measure f < B is 25. List the measures f the remaining angles. < E = < A = < D = < BCA = < ECD = 14) Billy and Bb are saving their allwances t buy new turntables. Billy has saved $25 already and earns a $15 allwance each week. Bb has saved $10 already and earns a $20 allwance each week. Part A: Write a system f equatins that can represent this situatin. Use x t represent the number f weeks and y t represent the ttal amunt saved. Equatin fr Billy Equatin fr Bb

10 #14 Part B: After hw many weeks will Billy and Bb have the same amunt f mney saved? Use yur equatins frm Part A t slve the system f equatins. (Use graphing r substitutin) Number f weeks