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Hoochie [10]
3 years ago
15

WILL MARK BRAINLIEST If Alan and Zack can clean a room in 30 minutes when working together, and Alan cleans twice as fast as Zac

k, how long would it take Alan to clean the room by himself?
Mathematics
1 answer:
Leona [35]3 years ago
3 0

Answer:

45 min

Step-by-step explanation:

Here,

the we take the work as W and Alan's speed as A and Zack's speed as Z.

A = 2Z

W = 30 ( A+Z)

if the time for Alan to done cleaning alone is t then t = W ÷ A

t = ( 30 (A+(A÷2)))÷ A

t = 45 min

I am done .

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David has 85 white eggs and 28 brown eggs. He puts 6 eggs into each tray and fills as many trays as he can. How many eggs are le
Murljashka [212]

Answer:

5 eggs are left over.

Step-by-step explanation:

Computers love this question. They have a built in command called mod which will give the answer in one line.

L = (85 + 28) mod 6: Print L

Humans have a little tougher time with it. We do it like this

Add 85 and 28 = 113

Divide by 6

113 / 6 = 18.8333333

What is left over is 0.833333333. But what does that mean, and how do you get rid of it?

Answer Number of Trays: The 18 is easily explained. He can fill 18 trays.

But we still have 0.83333333 to deal with.

The simplest way is to multiply that by 6.

6 * 0.833333333 = 5

The answer is 5

7 0
4 years ago
Which of the following has a slope of –2 and a y-intercept of 4?
Mumz [18]
The coefficient of x is the value for slope in y-intercept form, and the number that we add or subtract is our y-intercept. So in this case, we want to look for a "-2" in front of x and a +4 in the equation. 
Answer choice A fulfills those conditions. (I am also assuming that answer choice A should have had an x in it, but you accidentally forgot to type it.)

Please rate & heart answers you find helpful! :)
6 0
3 years ago
Plz help ill give you brainlyest
Firlakuza [10]

Answer:

psst whats wrong??

Step-by-step explanation:

6 0
3 years ago
Does Anyone have idea how to solve this problem?
garik1379 [7]
A.

5 * 2 = 10

8 * 2 = 16

10 cm by 16 cm is the new dimensions. Area = 160 sq cm. Perimeter = 52 cm.

B.

5 * 3 = 15

8 * 3 = 24

15 cm by 24 cm is the new dimensions. Area = 360 sq cm. Perimeter = 78 cm.

C.

The areas for the different sized photos both still maintain a ratio of 5:8 cm.
6 0
3 years ago
Read 2 more answers
20. Q(-1, 4), R(-1, -9), S(11, -2), T(11, 6)
s2008m [1.1K]

Answer:

Parallel

Step-by-step explanation:

QR and ST both parallel to y axis.

3 0
3 years ago
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