Answer:
The boy's age is 8, the younger brother's age is 4.
- What we know is that the first brother has to be 8, because the equation given is x = y(younger brother) + 8
- Now we must solve the equation based off of this.
![x = y + 8\\x(likely~8?) + 4 = 2 * (y + 4)](https://tex.z-dn.net/?f=x%20%3D%20y%20%2B%208%5C%5Cx%28likely~8%3F%29%20%2B%204%20%3D%202%20%2A%20%28y%20%2B%204%29)
- Hmm. What would the product of twice the sum of the younger brother's age be?
![x = 2*y](https://tex.z-dn.net/?f=x%20%3D%202%2Ay)
- If we have already found out that the older brother's age is currently 8, we know that that 8 + 4 is 12, and in that case, the 2 must be the current age apart the brothers are, 2 years. And that would mean the younger brother is 4. Let's finish the equation.
To find the younger brother's age using the given values...
![8 + 4 = 12](https://tex.z-dn.net/?f=8%20%2B%204%20%3D%2012)
That said, everything matches up with the equation. The first brother is twice the age of his younger brother.
Answer:
False
Step-by-step explanation:
When you multiplying powers will the same base you add the exponent, when dividing you would would subtract the exponents and when raising to a power to a power you would multiply the exponents
Answer:
10 : 3
Step-by-step explanation:
Convert one of the measurements so that it is in the same form as the other. (Easiest to convert m to cms so we are not working with decimals)
2.5 m = 2.5 x 100 = 250 cm (since there are 100 cm in a meter)
Therefore, as a ratio:
250 : 75
We can divide both by 5:
50 : 15
We can further divide by 5:
10 : 3
(no further simplifying)
So 2.5 m to 75cm as a ratio is 10 : 3
Hello!
To find the area of a rectangle you do length * width
You can plug in the values you know
(x - 2) * 5 = 30
Divide both sides by 5
x - 2 = 6
Add 2 to both sides
x = 8
The answer is 8
Hope this helps!