Simplify Before solving equations
-1(2k-11)=7
-1(2k-11)=7 1. Distribute,-1(2k-11)
Ans: k=-6 2. Substitute -11 in both sides
3. Divide -2k in both sides
4. Your answer should be; k=-6
-1(5x+2)=6
-1(5x+2)=6 1. Distribute -1(5x+2)
2. Substitute -2 in both sides3 . Divide -5x in both sides
Ans: x=-1.3
Solve.
15(1,000)=?
15(1,000)= 1. Multiply 15(1,000)
2. Then it equals 15,000
Ans: 15,000
Find the circumference.
circumference:?
Ans:
Circumference=49pim2
1.Formula:A=pir2
2.Plug it in. A=pir2=pi(72)=49pim2
pi=the number of pi
Define.
What is a function?
Ans:
Function: is a rule where each input has only one output. Functions can be represented in 4 ways: equations,table,graph, and mapping(basically if the input isn't repeating).
Function=input not repeating
7(x+2)+3=73
7(x+2)+3=73 1.Distribute 7(x+2)
2.combine like terms 14+3
-x is supposed to have a # 3.subtitute 17 in both sides
4.solve.
Ans: x=8
3x-(2x+1)=-5
3x-(2x+1)=-5 1. put a 1 before a negative then,-1(2x-1).
2. combine like terms 3x-2x
3. Substitute -5 in both sides
4. kcc
5. Divide 1x in both sides
Ans: x=6
Solve.
7.5(103)=?
7.5(103)= 1. Move the decimal 3 times because the exponent says 3 times.
2. Then replace the three spots with zeros.
Ans:75.000
Define.
What is a radius?
Ans:
Radius: is a distance from the center to the edge of a circle(basically half of a diameter).
Radius=half of a diameter
Define.
What is a range?
Answer:
Range: is a set of numbers that you get out of a function, and which as a output.(basically range is in an y axis in a table).
Range=output is a y axis in a table
5(x+9)-4=51
5(x+9)-4=51 1. Distribute 5(x+9)
2.Combine like terms 45-4
3. substitute 45 in both sides
5. Divide 5x in both sides.
Ans: x=18
-0.4(2c+5)=-2
-0.4(2c+5)=-2 1. Distribute -0.4(2c+5)=-2
2. Substitute 0.2 in both sides
3. Divide 2c in both sides
Ans: c=0
Solve.
6.37(10-5)=?
6.37(10-5)= 1. Move 5 decimals to the left because it's a negative.
2.Replace the 5 spaces with zeros
Ans:0.0000637
Define.
What is a diameter?
Ans:
Diameter: is a distance across the whole center of the circle(basically is half of a circle).
Diameter=half of a circle
Define. :)
What is a domain?
Ans:
Domain: is a set of numbers you can plug in a function, and which is a input.(basically a x axis in a table).
Domain=a input in the x axis of the table
-29=-2+9(a-b)
-29=-2+9(a-b) 1.Distribute - no number in front of variable put 1.
2.Combine like terms -2+9
3.Substitute 11 in both sides
4.Divide a in both sides
Ans: a=4.5
10+1(v-7)=15
10+1(v-7)=15 1. Distribute 1(v-7)
2. Combine like terms 10+-7
3. substitute 3 in both sides
4. Divide 1v by both sides
Ans: v=2
Solve.
9.52(10-7)
9.52(10-7)= 1. Move 9.52 decimal to the left because of the exponent -7,and it's a negative.
2. Replace the spaces with zeros
Ans: 0.0000000952
Define.
What is a circumference?
Ans:
Circumference: is a distance around a circle.
Is it a Function, and why or why not? Explain.
Domain(x): 1,2,6,9
Range(y): 4,3,5,7
Explain: It is or not a function because...
Ans:
Domain(x): 1,2,6,9 -(not repeating)
Range(y): 4,3,5,7
Explain: It's a function because the input isn't repeating in the domain(input). And because non of the other numbers aren't repeating.
-4(1+7a)=-121
-4(1+7a)=-121 1.Distribute -4(1+7a)
2. substitute -4 in both sides
3. Divide -28 in both sides
Ans: a=-4.2
20-5x+0.5x-15=32
20-5x+0.5-15=32
Ans: x=-6
Solve.
2.13(10,000,000)=?
2.13(10,000,000)= 1. Multiply 2.13(10,000,000)
2. Your answer should be 21,300,000 because you multiplied it by 10,000,000
Ans: 21,300,000
Find the radius and circumference.
D: 8cm
R: 4cm
Circumference:?
Ans: 1.Fomula: A=pir2
D: 8cm 2.Plug it in. A=pi/r2=pi(4)=50265picm2
R: 4cm
C:50.265picm2
Is this linear for a graph, explain.
x: 1,2,3,4
y: 3,8,15,24
Explain: This is linear because....
Ans:
x: 1,2,3,4
y: 3,8,15,24
Explain: This is linear because in the graph it shows it goes in a straight line and starts from zero.