Answer:
15 minutes
Step-by-step explanation:
The formula is
1/a + 1/b = 1/c to determine joint time where a and b are the times alone and c is the time together
1/10 + 1/ 30 = 1/c
Multiply each side by 30c to clear the fractions
30c( 1/10 + 1/ 30) = 1/c * 30c
3c + c = 30
4c = 30
Divide by 4
4c/4 = 30/4
c = 7.5 minutes
This is the time for 50 pages
We want 100 pages, so multiply by 2
7.5 *2 = 15 minutes
Answer:
1) the real part of z is 12.1
2) the imaginary part of z is 29i
Step-by-step explanation:
1) the real part of z is 12.1
2) the imaginary part of z is 29i
6/x = 8
6 = 8x
8x = 6
x = 6/8
x = 3/4
x = 0.75
Answer:
<h3>Toni can type words in 3 minutes is 270 words</h3>
Step-by-step explanation:
Given that the double number line shows that Toni can type 180 words in 2 minutes.
<h3>To find how many words can Toni type in 3 minutes:</h3>
From the given Toni can type 180 words in 2 minutes,
⇒ Toni can type
<h3>∴ 90 words per minute </h3>
For Toni would be able to type words in 3 minutes is
<h3>∴ 270 words per minute.</h3><h3>∴ Toni can type words in 3 minutes is 270 words.</h3>
Answer: B, C, E
Step-by-step explanation: