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3 years ago

Working alone, Darryl can mop a warehouse in 11 hours. Elisa can mop the same warehouse in 9

Mathematics

1 answer:

Harrizon [31]3 years ago

3 0

Answer:

≈ 5 hours

Step-by-step explanation:

Time needed if they work together:

1 / (1/11 + 1/9) =
1/ (20 / 99) =
99/20 ≈ 5 hours

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What is the factor expression of -20a-divided by 12b

s2008m [1.1K]

-20a divided by 12b would be -1.6

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3 years ago

Karen has a square rug that covers 76.5^{2} of her living room floor. Which measurement is closest to the side length of thes ru

zloy xaker [14]

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76.5

Step-by-step explanation:

if the area is 76.5^2, then all you have to do is take the square root, and it is 76.5

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3 years ago

Use the following function rule to find f(4). f(x) = 5 + 7 x

vladimir2022 [97]

Answer:

Step-by-step explanation:

put 4 in for x and then solve

5+7(4)

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3 years ago

Read 2 more answers

Help I can’t solve this at all

qwelly [4]

<h2>Answer: </h2>

We know that,

Length of arc = 2πrθ/360

Length of arc = 2 × 3.14 × 6 × 45/360

Length of arc = 6.28 × 3/4

= 18.84/4

= 4.71units.

8 0

3 years ago

Using approciate properties find -4/7*3/5+4/7*-1/5+2/5*-4/5

slega [8]

Answer: 0.548

Step-by-step explanation:

First you need to remember the formula for PEMDAS(Parenthesis,exponents,multiplication,divison,addition,subtractio)

you can do either multiplication or divison whichever comes first, same with addition+subtraction.

the underlined means to simplify

1.-0.57x3/5+4/7x-1/5+2/5x-4/5

2.-1.71/5+4/7x-1/5+2/5x-4/5

3.-0.342+4/7x-1/5+2/5x-4/5

4.-0.342+0.57x-1/5+2/5x-4/5

5.-0.342+0.57x-0.2+2/5x-4/5

6.-0.342+0.114+2/5x-4/5

7.-0.342+0.114+0.4x-4/5

8.-0.342+0.114+-1.6/5

9.-0.342+0.114+-0.32

10.-0.228+-0.32=-0.548

i did this all in one go so......

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3 years ago