Answer:
3.) 11
General Formulas and Concepts:
<u>Pre-Alg</u>
- Order of Operations: BPEMDAS
Step-by-step explanation:
<u>Step 1: Define</u>
f(x) = 2x + 5
f(3) is x = 3
<u>Step 2: Solve</u>
- Substitute: f(3) = 2(3) + 5
- Multiply: f(3) = 6 + 5
- Add: f(3) = 11
A(1,4 B(2,1 C (3,2
Step-by-step explanation:
try that to see if it works
Most of the information's required for solving the question is already given in the question.
Height of the building that casts a shadow of 20 m = 32 m
Then
Height of the man that casts a shadow of 1.2 m = (32/20) * 1.2 meter
= 3.2 * 1.2 meter
= 3.84 meter
So the actual height of the person casting a shadow of 1.2 meter is 3.84 meters. I hope that the procedure used for solving the problem is easy enough for you to understand. You can definitely use this method in future for solving problems of similar type without requiring any additional help from outside.
Hey!
Here’s the answer and set up for A
First you need to find the slope. Since the line is parallel to 3x+9. The slope will be the same so the slope will be 3. Next you need to put it in point slope and switch the sign so if it’s positive it’s going to be negative
This is what it will look like using point slope formula
(y+6)=3(X-2)
Then you will distribute the 3
(Y+6)=3x-6
Finally you will subtract the 6 from the left side so
Y=3x-12 will be your line. Now just do the same thing to B!
Hope this helped!!
Let the amount they both drive be x miles.
Then as the costs are the same
46 + 0.17x = 55 + 0.12x
0.05x = 55-46 = 9
x = 8/0.05 = 180 miles <------- answer to first part
This cos = 46 + 0.17*180 = $76.60 answer