Answer:
b = 57.6
Step-by-step explanation:
23 +3x +13 +2x=180
add the x's
5x
add the others
23+13=36
subtract 36 on both sides
36-36=0
180-36= 144
now get your 5x and divide by 5 on both sides
5/5 cancels out
144/5= 28.8
x= 28.8
now to find b
2·28.8= 57.6
to find 3x do the same
3 · 28.8 = 86.4
now double-check your answer by adding them all up and seeing if it = 180
57.6+86.4+36=180
Answer:
x1= 14/4 and X2 = -2
Step-by-step explanation:
To find the values of "X" for which when the function is evaluated gives 19 we need to equal the function to 19, as follows:
2x^2+3x+5 = 19
2x^2+3x+5-19=0
2x^2+3x-14=0
Then, solving for "x" we need to use the quadratic formula (Attached), where a, b, and c, are the following:
a: 2 b: 3 c: 14
Using the quadratic formula, we get:
x1= 14/4 and X2 = -2
Answer:
True
Step-by-step explanation:

The answer should be true.
Answer:
0.83
Step-by-step explanation: