<em>34 degrees. </em>
<em>If you want to find how much an angle is, first check the original line (aka base). Then (only if the line is a 180 degree line) subtract whatever value is shown (in this case it was 146 degrees so what you would do is subtract 146 from 180 and you would have your answer).</em>
<em>Hope this helps.</em>
<em>-Northstar</em>
Step-by-step explanation:
your answer should be 6.56$ when it is rounded and ready to go
Answer:
1) y = 5, x = 2
2) y = 5, x = 8
3) y = -2, x= -2
Step-by-step explanation:
1)
Use elimination to solve this problem. In this case, one can just add up the two equations, simplify, use inverse operations, and then substitute back in to find the answer.
y = -x + 7
y = x + 3
_______
2y = 10
/2 /2
y = 5, x = 2
2)
Use elimination, in this case, one will have to multiply the second equation by -2, then add, in order to eliminate one of the variables. Finally one will have to simplify, use inverse operations and then substitute back in to solve.
y = x - 3
y = (1/2)x + 1 (*-2)
y = x - 3
-2y = -x - 2
-y = -5
y = 5, x = 8
3)
Use elimination, in this case, one will have to multiply the second equation by 2, then add, in order to eliminate a variable. Then one will have to simplify, use inverse operations and then substitute back in to solve.
y = 2x + 2
y = -x - 4 *(2)
y = 2x + 2
2y = -2x - 8
3y = -6
/3 /3
y = -2, x = -2
<span> Nina + her 5 friends = 6 people
Then she has 9 apple to share with her and her friends.
Let’s calculate how many apple will each people get when they equally divide it
with each other:
=> 9 – 6 = 3
Thus already have 1 apple each, now, let’s divide the remaining 3 apples
=> 3 / 6 = .5
So they have half of apple each. Let’s add
=> 1 + .5 = 1.5
Each person will get 1.5 apple.
=> 1.5 * 6 = 9</span>
The equation -3=x^2+4x+1 can be rearranged into x^2+4x+4=0, you should be able recognise that this is an equation of the form ax^2+bx+c (where a, b, and c are constants). The question tells you that the discriminant of an equation of form ax^2+bx+c is equal to b^2-4ac, therefore after rearranging the equation you simply substitute the numbers in:
a=1 b=4 c=4
b^2-4ac=(4)^2-4x(1)x(4)=16-16=0
Therefore the discriminant value is 0.
To determine the amount of real solutions an equation has you look at the discriminant, if the discriminant is less than 0 there are no real solutions, if the discriminant is equal to 0 there is one solution, and if the discriminant is more than 0 there are 2 solutions. therefore as our discriminant is equal to - there is 1 real solution.
