Example :
5 + 10
GCF is 5
(5 * 1) + (5 * 2) = 5(1 + 2)
The GCF in the other sum ?.....there is none because it has already been factored
example :
15 + 45
GCF = 15
(15 * 1) + (15 * 3) = 15 (1 + 3)
Answer:
y=2x-4
Step-by-step explanation:
To find an equation perpendicular to another one, you must find the negative inverse of the slope.
In this case, -1/2 has an inverse of -2, but because we're finding the negative inverse, the two negatives cancel out and we get 2, the slope of our perpendicular equation, which crosses the initial equation, making a right angle.
What do I need to find?
Your answer is correct.
What information do I need to use?
100% = 240 miles, she has already driven 15% of 240, so she has driven x miles.
How will I use the information?
Set up a proportion. If she has already driven 15% out of 100% of the distance, then you should write
for the first fraction. This is proportional to
. This means that
. Wait, but this is confusing. How on Earth do we solve it? Let's take a closer look. If
is supposed to equal 15/100, then this means that x/240 divided by 15/100 should give us the answer. So, even though it looks complicated, all you have to do is cross multiply like this:
![\frac{15}{100} = \frac{x}{240} --> 240 * 15 = 100x --> 3600 = 100x](https://tex.z-dn.net/?f=%5Cfrac%7B15%7D%7B100%7D%20%3D%20%5Cfrac%7Bx%7D%7B240%7D%20--%3E%20240%20%2A%2015%20%3D%20100x%20--%3E%203600%20%3D%20100x)
Now isolate x:
![\frac{3600}{100} = \frac{100x}{100}](https://tex.z-dn.net/?f=%5Cfrac%7B3600%7D%7B100%7D%20%3D%20%5Cfrac%7B100x%7D%7B100%7D)
So x = 36, which means she has already driven 36 out of 240 miles. Lucia still has to drive 204 miles to reach her destination.
1.) In this case, 56 = 100% and 25% of the sandwiches were tuna. This means that 75% of the sandwiches were not. If
and you use the same method above, x is equal to 14. If 14 is 25% then that means the other 75% = 14 * 3. So 42 sandwiches were not tuna.
2.) ![\frac{60}{100} = \frac{x}{450}](https://tex.z-dn.net/?f=%5Cfrac%7B60%7D%7B100%7D%20%3D%20%5Cfrac%7Bx%7D%7B450%7D)
--> ![27000 = 100x](https://tex.z-dn.net/?f=27000%20%3D%20100x)
---> ![\frac{27000}{100} = \frac{100x}{100}](https://tex.z-dn.net/?f=%5Cfrac%7B27000%7D%7B100%7D%20%3D%20%5Cfrac%7B100x%7D%7B100%7D)
He still has $270 left to pay.
Answer:
46.2
Step-by-step explanation:
if you plug the value given for g into g in the equation, it should look like
2.2(21) which you multiply the two together. and you get 46.2.
hope this helps you...sorry just seen your question now.
Answer:
B: There is a greater percentage of 10th graders who do not have a sibling than 9th graders who do not have a sibling.
C: The total number of students in the poll who have a sibling is 116.
E: More 9th graders were polled than 10th graders.
Step-by-step explanation: i just did the question.