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Elanso [62]
3 years ago
10

I need help with these questions it’s urgent

Mathematics
1 answer:
Kobotan [32]3 years ago
3 0

Answer:

oop-

Step-by-step explanation:

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.in week 5 There were 60 dumpsters loads of waste removed.in week 10 there were 40 dumpster loads removed assume that the reduct
Minchanka [31]
Over 5 weeks 20 reduction in waste removed.
Therefore 4 per week.

Therefore gradient -4w.
-4 x 5 + c = 60
-20 + c = 60
c = 80

dumpsters removed = d
weeks = w
d = 80 - 4w
6 0
3 years ago
Watermelon is on sale for $4 per pound. How much would 12.8 pounds cost?​
Lana71 [14]

Answer:

$51.2

Step-by-step explanation:

4 x 12.8 = 51.2

4 0
3 years ago
Janice receives $.40 per pound for 1 to 99 pounds of aluminum cans he recycles. he receives $.50 per pound if you are cycles mor
Ilya [14]

Answer:

M=\left\{\begin{matrix}0.4x &x\leq99 \\ 0.5x &x>100 \\ \end{matrix}\right.

Step-by-step explanation:

<u>Function modeling</u>

Real-life situations often require the help of mathematics to model numerically what happens when the variables involved can change. It could even be used to predict some expected outcomes from those models.

The problem states Janice receives $.40 per pound when he recycles less or equal than 99 pounds of aluminum. If x is the number of recycled pounds, then the amount of money he receives is

M=0.4x

We also know that if he recycles more than 100 pounds of aluminum, the pay increases to $0.5 per pound. In that case, the amount of money is

M=0.5x

This is a case where the function is defined differently depending on the conditions of the input variable x. It's called a piecewise function. The function can be written as

M=\left\{\begin{matrix}0.4x &x\leq99 \\ 0.5x &x>100 \\ \end{matrix}\right.

Note the function is not well constructed because there is a gap for x=100 where M is not defined. If we establish that for 100 pounds the payment is $0.5, then the second piece would include x=100

5 0
3 years ago
Helen walk 2 3/4 miles per day. Bill run's 10 miles every 4 days. In 4 days, who runs the longest distance
Gennadij [26K]
Helen runs the longest distance in 4 days.

Helen (In 4 days): 2.75 x 4 = 11

Bill (In 4 days): 10

11 (Helen) > 10 (Bill), so therefore Helen runs the longest distance in 4 days.
5 0
4 years ago
Paul can mow grass in 50 minutes, but it takes Dan three times as long. How long will it take them to mow the grass if they work
Law Incorporation [45]

hey!

Answer: Paul does 1/50 of the job per minute.

3 times longer is 150 minutes longer = 200 minutes

Dan does 1/200 per minute.

Together, they do 1/50 + 1/200 per minte = 1/40 per minute

--> 40 minutes

Hope this helps!!

~LENA~

8 0
3 years ago
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