Answer:
The answer for 18 is 175 (use khan academy)
Step-by-step explanation: base1 + base2 (times) height divided by 2
Answer:
3.75 feet
Step-by-step explanation:
The length of the frame is 3 times the width.
Let the width be x.
The length will be 3x.
Kyle uses 10 feet of wood to make the frame. This means that the perimeter is 10 feet.
The perimeter of a rectangle is:
P = 2(L + W)
=> 10 = 2(3x + x)
=> 10/2 = 4x
5 = 4x
=> x = 5/4 = 1.25 feet
The width is 1.25 feet. The length is therefore:
1.25 * 3 = 3.75 feet
Answer:
Approximately 18.7% people lived without clean drinking water.
Step-by-step explanation:
Given:
Total Number of people living in the world = ![5.35\times10^9](https://tex.z-dn.net/?f=5.35%5Ctimes10%5E9)
Number of people didn't have access to clean drinking water = ![1\times10^9](https://tex.z-dn.net/?f=1%5Ctimes10%5E9)
We need to find the approximately what percent of them lived without clean drinking water.
Solution:
Now we can say that;
To find the percent of people lived without clean drinking water can be calculated by Number of people didn't have access to clean drinking water divided by Total Number of people living in the world multiplied by 100.
framing in equation form we get;
percent of people lived without clean drinking water = ![\frac{1\times10^9}{5.35\times 10^9}\times 100 \approx 18.7\%](https://tex.z-dn.net/?f=%5Cfrac%7B1%5Ctimes10%5E9%7D%7B5.35%5Ctimes%2010%5E9%7D%5Ctimes%20100%20%5Capprox%2018.7%5C%25)
Hence Approximately 18.7% people lived without clean drinking water.
Answer:
No
Step-by-step explanation:
Lets simplify both expressions:
We will start with Gloria's first expression:
![1/4 (12x + 24) -9x](https://tex.z-dn.net/?f=1%2F4%20%2812x%20%2B%2024%29%20-9x)
Apply distributive property:
![(3x + 6) -9x](https://tex.z-dn.net/?f=%283x%20%2B%206%29%20-9x)
Combine like terms, we are then left with:
![6-6x](https://tex.z-dn.net/?f=6-6x)
Now lets simplify the second expression
![-6(x+1)](https://tex.z-dn.net/?f=-6%28x%2B1%29)
Apply distributive property
![-6x-6](https://tex.z-dn.net/?f=-6x-6)
Rearrange:
![-6-6x](https://tex.z-dn.net/?f=-6-6x)
Now we can see that the two equations are not equal, as the first is 12 greater than the second. Another way we could have tested this was plugging in a value for x and then solving.
Answer:
6.27 minutes
Step-by-step explanation:
x = beginning time
x - 2.1 - 0.21 = 3.96 *(1/10 of 2.1 is 0.21)
x - 2.31 = 3.96
x = 6.27