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kumpel [21]
2 years ago
13

4) Sophie checks her bike for repairs every 9 days and Susan check hers every 12 days.

Mathematics
1 answer:
musickatia [10]2 years ago
6 0

Answer:

20

Step-by-step explanation:

12+9=20

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Find the dimensions of the rectangle with area 289 square inches that has minimum perimeter, and then find the minimum perimeter
nalin [4]
 <span>To minimize the perimeter you should always have a square. 
sqrt(289) = 17 
The dimensions should be 17 X 17 

To see , try starting at length 1, and gradually increase the length. 
The height decreases at a faster rate than the length increases, up until you reach a square. 

Or if you want to use algebra, Say the width is 17-x 
Then the length is 289/(17-x) 

Now, this is bigger than 17+x, as shown here: 
289/(17-x) > 17+x 
289 > 289 - x^2 
which is true. 
so the perimeter would be bigger than 2 * (17- x + 17 + x) = 2 * (2 * 17) = 4 * 17 

Again, the dimensions should be a square. 17 X 17.</span>
4 0
2 years ago
Sully is a vocalist in a rock band. The table provided shows the number of tracks his band records and the respective number of
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Answer:

C

Step-by-step explanation:

The rate of change here will be the difference in the number of tracks divided by the difference in the number of albums.

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The rate of change is: \frac{32-16}{4-2} =\frac{16}{2} =8

The answer is thus C.

6 0
2 years ago
Read 2 more answers
What expressions are equivalent to-2(2h + 10) ×4h ​
Feliz [49]

Answer: 16x^2 - 80x

if you simplify

Step-by-step explanation:

<em>hope this helps pls mark brainliest</em>

7 0
2 years ago
Hillel is juggling flaming torches to raise money for charity. His initial appearance raises \$500$500dollar sign, 500, and he r
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Answer:

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Step-by-step explanation:

in this question, we are told to give a mathematical expression that would model the amount of money that is made by Hillel.

from the question, we were made to understand that the amount of money he makes is a front of his time t. that is noted.

and also, he has a base cost of $500.

now, let’s write an equation;

R = $500 + 15(t)

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3 0
2 years ago
write and solve an equation to find the width of the box if it's volume is 96 cubic centimeters. then find its surface area
Alex73 [517]
There's not enough given information in the question to calculate an answer.

If we only know that the volume of the box is 96 cm³, then there are an infinite
number of different lengths, widths, and surface areas that it could have.
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