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horrorfan [7]
3 years ago
5

Debbie cut a cord into sixths . She used five of the to make necklaces . She used equal lengths of the remaining cord for each o

f four bracelets. What fraction of the original cord did Debbie use for each bracelet ?
Mathematics
1 answer:
Brut [27]3 years ago
4 0
So she used \frac{5}{6} of the cord to make necklaces.
1- \frac{5}{6} = \frac{1}{6}

She splits the \frac{1}{6} length into 4 equal lengths.
To divide a fraction by a fraction, you multiply it by its reciprocal.
\frac{1}{6} ( \frac{1}{4})
=\frac{1}{24}

She used \frac{1}{24} of the original chord to make each bracelet.
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Lessons
Inessa [10]

The equation becomes y =-0.7x²+5.4x+6 if the person who is 6 feet tall throws a ball into the air option first is correct.

<h3>What is a quadratic equation ?</h3>

Any equation of the form  \rm ax^2+bx+c=0 Where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.

The standard form of a quadratic equation:

\rm y =ax^2+bx+c

Plug x = 0 and y = 6

6 = c ...(1)

Plug x = 1, and y = 10.7

10.7 = a + b + c ...(2)

Plug x = 2 and y = 14

14 = 4a + 2b + c  ...(3)

After solving equation (1), (2) and (3) we get:

a = -0.7

b = 5.4

c = 6

\rm y =-0.7x^2+5.4x+6

Thus, the equation becomes y =-0.7x²+5.4x+6 if the person who is 6 feet tall throws a ball into the air option first is correct.

Learn more about quadratic equations here:

brainly.com/question/2263981

#SPJ1

6 0
3 years ago
How do you find how many pounds he used, and how many pounds did he use?
Rainbow [258]

Answer:

I'm not too sure what you are referring too and I can't clearly see the image but I'll give you some tips!

One way to find out how many pounds he used is to add all the pounds you know he used (what is written down) or to multiply, divide, whatever is best for the situation

so yeah hope this helped!

5 0
3 years ago
Help I don’t understand this appreciate any help
ella [17]
Theres nothing attached..
5 0
3 years ago
Read 2 more answers
Question 7 of 10
horsena [70]

Answer:

D. Multiply the top equation by -3.

Step-by-step explanation:

2x – 4y= 5           -3(2x – 4y= 5)          -6x + 12y= -15

6x - 3y=10                                                6x - 3y=10

No you can eliminate -6 and 6

7 0
3 years ago
Read 2 more answers
Is 4m greater than 400 dm
alex41 [277]
400dm is bigger than 4m
6 0
3 years ago
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