
Explanation:
Since we have given that
Speed at which Eugene walked all the way to school = 3 mph
After realizing that she forgot her math book, she ran back
Speed at which Eugene walked back to her house = 7 mph
Let the distance between her house and her school be x
According to question,

Hence,

Given:
Total number of students at Colfax Middle School = 270
Ratio of boys to girls is 5:4.
Total number of students at Winthrop Middle School = 180
Ratio of boys to girls is 4:5.
The two schools hold a dance and all students from both schools attend.
To find:
The fraction of the students at the dance are girls
Solution:
There are 270 students at Colfax Middle School, where the ratio of boys to girls is 5:4.

Number of boys 
Number of girls 
There are 180 students at Winthrop Middle School, where the ratio of boys to girls is 4:5.

Number of boys 
Number of girls 
Now,
Total number of students in both schools 

Total number of girls in both schools 

The fraction of the students at the dance are girls is



Therefore, the required fraction is
.
Answer:
Step-by-step explanation:
Answer:
4ab² + 20b - 3a
Step-by-step explanation:
This question most likely asks us to simplify the expression, as factoring is not possible...
(ab² + 13b - 4a) + (3ab² + a + 7b),
ab² + 13b - 4a + 3ab² + a + 7b,
ab² + 3ab² + 13b + 7b - 4a + a,
Solution : 4ab² + 20b - 3a
Correct answers are
and
i.e. Options A & D
<u>Step-by-step explanation:</u>
Options for this questions are:
A)D+1/5D
B)D+20
C)D+20D
D)1.2D choose two answers.
We have , Crispy Clover, a popular vegetarian restaurant, introduced a new menu that has 20%, percent more dishes than the previous menu. The previous menu had D dishes.We need to find expressions could represent how many dishes Crispy Clover's new menu has . Let's find out:
Initially , Number of dishes are D . Then 20% more dishes are there in menu
⇒ 
So , Total Number of Dishes are
⇒ 
⇒ 
⇒ 
⇒ 
⇒ 
Therefore, Correct answers are
and
i.e. Options A & D .