(A) 0
(B) 90
(C) 7
(D) 12
Answer:
0
Step-by-step explanation:
Answer/Step-by-step explanation:
34 - 34= 0
It basically undoes what is being done and gets rid of its worth.
You want to isolate one of the variables (x or y) so you can plug it into the other equation. The easiest one is isolating the 2nd equation.
3x² - 16x + 13 - y = 0 Add y on both sides
3x² - 16x + 13 = y
You can use this and plug it into the first equation
y - 12x + 15 = 3x²
(3x² - 16x + 13) - 12x + 15 = 3x²
3x² - 16x + 13 - 12x + 15 = 3x² Combine like terms
3x² - 28x + 28 = 3x² Subtract 3x² on both sides
-28x + 28 = 0 Add 28x on both sides
28 = 28x Divide 28 on both sides
1 = x
Now that you know x, you can plug it into either of the equation to find y
3(1)² - 16(1) + 13 - y = 0
3 - 16 + 13 - y = 0
-y = 0 Divide -1 on both sides
y = 0
x = 1, y = 0
Answer:
m2 = 50
Step-by-step explanation:
7x+1+18x+4=180
25x+5=180
25x=175
x=7
m2= 7(7)+1 = 50
Answer:
2.
Step-by-step explanation:
We have been given that lines b and c are parallel.
Since we know that vertical angles are always congruent. We can see that measure of angle 2 will be equal to as it is the measure of vertical angle of angle 2.
We can see that and form a linear pair, so they will add up to 180 degrees.
Now let us substitute value of x in the expression to find the measure of angle 2.
Therefore, the measure of angle 2 will be 50 degrees and 2nd option is the correct choice.
3/7 ÷ 1/7
Struggling with this question
Answer:3
Step-by-step explanation:We first find the reciprocal of the second fraction then the division sign changes into multiplication then you work out.