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-Dominant- [34]
3 years ago
15

A new string is chosen and knotted with all the other strings to create a second row. This process is repeated until there are e

nough rows to make a bracelet to fit around your friend's wrist. Are the number of knots proportional to the number of rows? Explain your reasoning.
Mathematics
1 answer:
NeX [460]3 years ago
8 0

Answer:

Yes, the number of knots is proportional to the number of rows.

Step-by-step explanation:

The number of knots is proportional to the number of rows, because whenever there is a new row then it implies that there is new knot.

Meaning, as the number of rows increases, the number or knots increases. This is a proportional relationship.

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iVinArrow [24]

Answer: disagree its backwards

Step-by-step explanation: the x intercept always comes first so its actually (-4,2)

6 0
3 years ago
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Hello! Can someone help with this question?
IgorC [24]

Hello! :)

\large\boxed{\text{70 seconds}}

Use a proportion to find how many seconds are needed to fold 5 shirts.

We are given that he takes 28 seconds to fold 2 shirts:

28 sec : 2 shirts

We are not given the amount of time needed for 5 shirts, which we need to solve:

x seconds : 5 shirts

Express in a fraction:

\frac{2 shirts}{28 seconds}  = \frac{5 shirts}{xseconds}

Cross multiply and simplify:

2 * x = 5 * 28\\\\2x = 140\\\\x = 70 sec

Therefore, he needs 70 seconds to fold 5 shirts.

5 0
3 years ago
Round 4891 to the nearest hundred.<br>a.5000<br>b.5900<br>c.4891<br>d.4900
weeeeeb [17]
D.4900
is the answer
5 0
3 years ago
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A jet plane flying at an altitude of 8000 meters drops 600 meters. What is the new altitude?
photoshop1234 [79]
8000-600=7400 

7400 would be the new altitude using simple subtraction. 
5 0
3 years ago
Please help, thank you
madam [21]

Answer:

\displaystyle x=\frac{-8\pm\sqrt{(8)^2-4(4)(-221)}}{2(4)}\ \text{; x = 6.5 and x = -8.5}

Step-by-step explanation:

Subtract the right side of the given equation to put it into standard form:

  4x² +8x -221 = 0

Then the coefficients used in the quadratic formula are ...

  • a = 4
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When these are filled into the form ...

\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

the result is as shown above.

7 0
3 years ago
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