Answer: The second number is 26
Step-by-step explanation:
To solve this problem you must apply the proccedure shown below:
1. Let's call:
x: The first even number.
x+2: the second consecutive even number.
x+4: the third consecutive even number.
2. So, you know that the sum ot the 3 consecutive numbers is 78, therefore, you must add them, as you can see below:
3. Substitute the value obtain into x+2. Therefore, the second number is:
Answer:
Step-by-step explanation:
Number line with open circle on 7 and shading to the left
Answer:
12 inches
Step-by-step explanation:
To solve you have to set up a ratio. Because both buildings are being shrunk the exact same amount, you just have to account for the size difference from the miniature and real life. The ratio is 21:3 and 84:x. To find x you just have to cross multiply and solve.
The equation comes out to be 252 = 21x
Divide both sides by 21 to get x.
252/21 = 12
The size of the 84 foot building as a model is 12 inches.
A real number x will be called a solution or a root if it satisfies the equation, meaning . It is easy to see that the roots are exactly the x-intercepts of the quadratic function , that is the intersection between the graph of the quadratic function with the x-axis.
