All categories

3 years ago

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

1 answer:

max2010maxim [7]3 years ago

6 0

$min-minute;\ s-second\\\\1min=60s\\\\\begin{array}{ccc}40s&-&0.5\ DVD\\60s&-&x\ DVD\end{array}\ \ |cross\ multiply\\\\\\40\cdot x=60\cdot0.5\\40x=30\ \ \ \ |divide\ both\ sides\ by\ 40\\x=\frac{30}{40}\\\\x=\frac{3}{4}\ (DVD)\\\\\frac{3}{4}=0.75\\\\Answer:\boxed{0.75DVD\ per\ 1\ min}$

You might be interested in

—5(-x+1)-3-1=-12<br> Help

Kobotan [32]

Answer:

5x-5-3-1=-12

5x-9=-12

5x=-12+9

5x=-3

x=-3/5

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Write the quotient in scientific notation and in

san4es73 [151]

Answer:

3.64 × 10(raised to the power 7)

2.6 × 10⁴

7 0

2 years ago

30 preschoolers are going to a field trip 60% of them will be bringing their own lunch how many lunches does the teacher need to

sweet-ann [11.9K]

Answer:They will need to make 18 lunches

Step-by-step explanation: How I did it was use the website demos scientific calculator and put the question of what is 60% of 30 and it gave the answer!

3 0

3 years ago

Read 2 more answers

The cost of 10 days at Healthy Gym is $ .

liq [111]

Answer: $25

Step-by-step explanation:

4 0

3 years ago

A manufacturer of matches randomly and independently puts 23 matches in each box of matches produced. The company knows that one

d1i1m1o1n [39]

Answer:

0.9855 or 98.55%.

Step-by-step explanation:

The probability of each individual match being flawed is p = 0.008. The probability that a matchbox will have one or fewer matches with a flaw is the same as the probability of a matchbox having exactly one or exactly zero matches with a flaw:

$P(X\leq 1)=P(X=0)+P(X=1)\\P(X\leq 1)=(1-p)^{23}+23*(1-p)^{23-1}*p\\P(X\leq 1)=(1-0.008)^{23}+23*(1-0.008)^{23-1}*0.008\\P(X\leq 1)=0.8313+0.1542\\P(X\leq 1)=0.9855$

The probability that a matchbox will have one or fewer matches with a flaw is 0.9855 or 98.55%.

8 0

3 years ago