Answer:
f(- 2) = - 1
Step-by-step explanation:
To evaluate f(- 2) substitute x = - 2 into f(x) , that is
f(- 2) = 3 - (- 2)² = 3 - 4 = - 1
Let's solve your equation step-by-step.
0.3(n−5)=0.4−0.2(n−7)
Step 1: Simplify both sides of the equation.
0.3(n−5)=0.4−0.2(n−7)
(0.3)(n)+(0.3)(−5)=0.4+(−0.2)(n)+(−0.2)(−7)(Distribute)
0.3n+−1.5=0.4+−0.2n+1.4
0.3n−1.5=(−0.2n)+(0.4+1.4)(Combine Like Terms)
0.3n−1.5=−0.2n+1.8
0.3n−1.5=−0.2n+1.8
Step 2: Add 0.2n to both sides.
0.3n−1.5+0.2n=−0.2n+1.8+0.2n
0.5n−1.5=1.8
Step 3: Add 1.5 to both sides.
0.5n−1.5+1.5=1.8+1.5
0.5n=3.3
Step 4: Divide both sides by 0.5.
0.5n0.5=3.30.5
n=6.6
For example, let's say that you had a birth day party, and at the party, you had 11 people all ready bringing food, but you needed 28 people to bring food. And in this equation, "x" would represent the amount of people that needs to come to bring food, and that 28 would then be the total.
We then do, 28 - 11 = 17.
And therefore, there would then have to be 17 people who would have to attend to bring food for the part. (end of example).
So this above would show and model on how to use these kind of equations in a real situation in a everyday life.
1st is to make the numbers into ratios. Basically taking the two numbers and putting them in the middle. I’ll do the 1st 15:36.
Next you put it into a fraction: 15/36
Put in the comments if you want me to do all or if you have any questions!
Answer:
2
Step-by-step explanation:
i don't know step by step but I have this same problem and the answer is 2