If the fraction is for example 1/4, try to graph it at before the half by a little.
Answer:
9. -4x+19y-7
10. 7x+20
Step-by-step explanation:
9. To simplify this expression, simply combine like terms. Add all of the terms with the x variable together, then the terms with the y variable, then the constant terms. I will show this step by step, but usually you do not have to show this work. The order of the terms does not matter.
x variable terms: (4x-8x)+7y-2+6y+6y-5= -4x+7y-2+6y+6y-5
y variable terms: (7y+6y+6y)-4x-2-5=19y-4x-2-5
constant terms: (-2-5)-4x+19y=-4x+19y-7
10. To simplify this expression, expand all terms and then combine like terms. The first term can be expanded by multiplying each term in the parentheses by 2.
Expand terms: 2(5+3x)+(x+10)= 10+6x+x+10
Now, you can combine like terms as done on the last problem. Note that I got rid of the parentheses in the second term, as they did not matter (since there was no term in front of them).
x variable terms: (6x+x)+10+10=7x+10+10
constant terms: (10+10)+7x=7x+20
Answer:
1: 42-degrees, 69-degrees, 64-degrees, 53-degrees
2: first triangle and last triangle are similar while the other two are similar to each other
Step-by-step explanation:
1: 85 + 53 + x= = 180
138 + x = 180
x = 42
2: 47 + 64 + x = 180
111 + x = 180
x = 69
3: 47 + 69 + x = 180
116 + x = 180
x = 64
4: 85 + 42 + x = 180
127 + x = 180
x = 53
If <span>σ = the standard deviation and we know the deviation is 15 we can set his up like the following:
</span><span>σ = √v
</span><span>15 = √v
Square both sides:
</span>
