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Marta_Voda [28]
3 years ago
6

It took jayla 40 seconds to rip half a DVD. what is jaylas ripping rate in DVDs per minute?

Mathematics
1 answer:
max2010maxim [7]3 years ago
6 0
min-minute;\ s-second\\\\1min=60s\\\\\begin{array}{ccc}40s&-&0.5\ DVD\\60s&-&x\ DVD\end{array}\ \ |cross\ multiply\\\\\\40\cdot x=60\cdot0.5\\40x=30\ \ \ \ |divide\ both\ sides\ by\ 40\\x=\frac{30}{40}\\\\x=\frac{3}{4}\ (DVD)\\\\\frac{3}{4}=0.75\\\\Answer:\boxed{0.75DVD\ per\ 1\ min}
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Answer:

64 books

Step-by-step explanation:

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3 years ago
A sequence of 7 numbers starts with 8. The second number in the sequence is unknown and may be positive or negative. The third t
scoray [572]

Answer:

4

Explanation:

a_1=8,a_7=0

Since the third term is the sum of the two previous terms

a_3=a_2+a_1

a_7=a_6+a_5

a_7=a_5+a_4+a_4+a_3

Continuing in like manner

a_7=5a_3+3a_2

Since a_3=a_2+a_1

a_7=5(a_2+a_1+3a_2

a_7=5a_2+5a_1+3a_2

a_7=8a_2+5a_1

Recall: a_1=8,a_7=0

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a_2=-5

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The sum of the seven numbers is 4.

8 0
3 years ago
How can we calculate the perimeter of an irregular shap
Nonamiya [84]
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4 0
3 years ago
Solve for x and y <br> x+y=1<br> 2y-x=8
lara31 [8.8K]

Answer:

(- 2, 3 )

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7 0
3 years ago
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lukranit [14]
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6 0
3 years ago
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