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otez555 [7]
3 years ago
8

Mark can clean his father's office in 30 minutes. His younger sister Lynn can clean the office in 40 minutes. How long will it t

ake if they come together and clean the office
Mathematics
2 answers:
zhannawk [14.2K]3 years ago
7 0
If they each do half, it will take 35 minutes.
Elan Coil [88]3 years ago
4 0
10 minutes is the answer

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Please Help!! Will Mark Brainliest!!!
Gennadij [26K]

Answer:

a. This data best fits an exponential model.

b. The regression equation would be:  y = 8385(1.12)^x

c. The y-intercept would be the starting value of the account.

d. Yes, the correlation coefficient is 0.9983.

e. If you input 6 into the equation, you will get a value of $16,550.

Step-by-step explanation:

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2 years ago
Yousef typed a 36 word paragraph in 2/3 minute. What is his typing speed in words per minute? The choices for the question is -9
Damm [24]

Answer:

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Step-by-step explanation:

5 0
3 years ago
Find the<br> area of the figure.
EastWind [94]

Answer:

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Step-by-step explanation:

8 0
3 years ago
Last year the 6th grade had 350 students.This year the number decreased 36%.How many students are in this years 6th grade class
denis-greek [22]
The decrease in students are <span>350⋅0.36=126</span>
The number of students are <span>350−126=224</span> in this year.[Ans]The number of students are 224 <span>in this year.
https://socratic.org/questions/last-year-the-6th-grade-had-350-students-this-year-the-number-decreas...
</span>
4 0
3 years ago
Read 2 more answers
write a word problem that can be solved using a system of two linear equations. solve the problem and give the meaning of the an
dmitriy555 [2]

Answer:

The sum of two numbers is 25. One of the numbers exceeds the other by 9. Find numbers

<h3>here</h3>

the other number = x + 9

Let the number be x. 

Sum of two numbers = 25

According to question, x + x + 9 = 25

⇒ 2x + 9 = 25

⇒ 2x = 25 - 9

⇒ 2x = 16

⇒ 2x/2 = 16/2

⇒ x = 8

Therefore, x + 9 = 8 + 9 = 17

Therefore, the two numbers are 8 and 17.

5 0
3 years ago
Read 2 more answers
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