The answer is 10 Mark brainiest please
Answer:
the anwser is 27
Step-by-step explanation:
glad I could help!
Answer:
8/9
Step-by-step explanation:
The proportion of the treasure which Johnny got
The proportion of the treasure which Elizabeth got
Together, the proportion of the treasure which they got
Take the LCM of the denominators
LCM of 3 and 9 is 9.
Therefore:
Together, Johnny and Elizabeth got 8/9 of the treasure.
Hello!
To solve this, first say x = number of hours grading.
We can set up fractions to represent how much each one of them can grade in one hour. To do this, divide the number of essays by the number of hours it would take for them to grade them. Therefore, the professor would be able to grade 5/2 essays in one hour, and her assistant would be able to grade 7/3 essays in one hour.
Now, set up your equation.
5/2x + 7/3x = 40
Since x = number of hours spent grading, multiply that by the respective fractions we calculated earlier to get the number of essays they would grade in x hours. Set the equation equal to 40 as you are looking for 40 essays done.
Now, solve the equation. First, set a common denominator, add the two fractions together, then simplify.
5/2x + 7/3x = 40
15/6x + 14/6x = 40
29/6x = 40
x = 40/(29/6)
x = 40 * (6/29)
x = 240/29
x = about 8.3
Therefore, your answer is about 8.3 hours, or about 8 - 9 hours.
Hope this helps!
Answer:
Step-by-step explanation:
Complementary angles mean that the sum of the angles add up to . We can use algebra to solve for and then to determine .
(substitution)
∴
Hope this helps :)